Analog-Devices-LTC5597HDC-TRMPBF
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LTC5597
100MHz to 70GHz
Linear-in-dB RMS Power Detector with
35dB Dynamic Range
FEATURES
DESCRIPTION
provides a very wide RF input bandwidth, from 100MHz
up to 70GHz. This makes the device suitable for a wide
range of RF and microwave applications, such as point-
to-point microwave links, instrumentation and power
control applications.
n
Ultra Wide Matched Input Frequency Range:
100MHz to 70GHz
n
n
n
n
35dB Linear Dynamic Range (<
1dB ꢀrrorꢁ
28.5mV/dB Logarithmic Slope
2dB Flat Response ꢂrom 100MHz to ꢃ0GHz
Accurate RMS Power Measurement oꢂ High Crest
Factors (Up to 12dBꢁ Modulated Waveꢂorms
Low Power Shutdown Mode
Low Supply Current: 33mA at 3.3V (Typical)
Small 2mm × 2mm Plastic DFN8 Package
I-Grade: −40°C to 105°C Rated
The DC output voltage of the detector is an accurate
representation of the average signal power applied to the
RF input. The response is linear-in-dB with 28.5mV/dB
logarithmi
c
s
lop
e
o
ve
r
a
3
5d
B
d
ynami
c
r
ang
e
w
it
h
t
ypically
better than
1dB accuracy. The detector is particularly
suited for measurement of waveforms with crest factor
(CF) as high as 12dB, and waveforms that exhibit a sig-
nificant variation of the crest factor during measurement.
n
n
n
n
H-Grade: −40°C to 125°C Rated
with Guaranteed Log-Slope and Log-Intercept
ESD Rating: 2500V HBM, 1500V CDM
n
To achieve higher accuracy and lower output ripple, the
averaging bandwidth can be externally adjusted by a ca-
pacitor connected between the F
L
T
R and OUT pins.
APPLICATIONS
n
Point-to-Point Microwave Links
n
SATCOM
The enable interface switches the device between active
measurement mode and a low power shutdown mode.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including 9330283, 9639719.
n
Instrumentation and Measurement Equipment
n
Military Radios
n
5G,
L
T
E, WiFi, Wireless Networks
n
RMS Power Measurement
n
Receive and
T
r
ansmit Gain Control
n
RF PA
T
r
ansmit Power Control
TYPICAL APPLICATION
100MHz to 70GHz RMS Power Detector
Output Voltage vs Frequency
ꢀ.ꢁ
0ꢀꢁꢂ
1Ω
ꢀꢁꢂꢃꢄ
3.3V
ꢀ.ꢁ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
100nF
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ENABLE
EN
V
CC
L
T
C5597
GND
OUT
ADC
C
F
L
T
R
RF
IN
RF
IN
F
L
T
R
GND
GND
5597 TA01a
0.ꢀ
ꢀ
ꢀ0
ꢀ00
Rꢀ ꢀRꢁꢂꢃꢁꢄꢅꢆ ꢇꢈꢉꢊꢋ
ꢀꢀꢁꢂ ꢃꢄ0ꢅꢆ
Rev. 0
1
LTC5597
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
(Note 1ꢁ
Supply Voltage (V
) ………………………………………..3.8V
CC
ꢀꢁꢂ ꢃꢄꢅꢆ
RF Input
Signal Power – Average…………………..15dBm
IN
ꢗ
ꢐ
ꢘ
ꢖ
ꢌ
ꢛ
ꢙ
ꢚ
ꢃ
ꢅꢕ
ꢈꢈ
RF Input
Signal Power – Peak (Note 2)…………..20dBm
IN
ꢁꢜꢀ
ꢔ
ꢎ
ꢀ
R
ꢋꢕꢇ
ꢋꢕꢇ
ꢝ
DC Voltage at RF
………………………………… –0.3V to 1V
IN
Rꢔ
ꢄꢕ
DC Voltage at FLTR …………………………….. –0.3V to 0.4V
ꢋꢕꢇ
DC Voltage at EN………………………………… –0.3V to 3.8V
T
………………………………………………………….. 150°C
JMAX
ꢇꢈ ꢂꢉꢈꢊꢉꢋꢅ
ꢌꢍꢎꢅꢉꢇ ꢏꢐꢑꢑ
×
ꢐꢑꢑꢒ ꢂꢎꢉꢓꢀꢄꢈ ꢇꢔꢕ
Case Operating Temperature Range (T
):
C
T
= 150°C,
θ
= 25°C/W
JMAX
JC
I-Grade (Note 3)…………………………..
−40°C to 105°C
H-Grade (Note 4) …………………………
−40°C to 125°C
Storage Temperature Range ……………… –65°C to 150°C
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LꢀAD FRꢀꢀ FINISH
LTC5597IDC#PBF
LTC5597HDC#PBF
TAPꢀ AND RꢀꢀL
PART MARKING*
LHKF
PACKAGꢀ DꢀSCRIPTION
TꢀMPꢀR
A
T
URꢀ RANGꢀ
LTC5597IDC#TRPBF
LTC5597HDC#TRPBF
8-Lead 2mm × 2mm Plastic DFN
8-Lead 2mm x 2mm Plastic DFN
–40°C to 105°C
–40°C to 125°C
LHKF
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping containe
r
.
Tape and reel specifications
.
Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
ELECTRICAL CHARACTERISTICS
The
l
denotes the speciꢂications which apply over the ꢂull operating
temperature range, otherwise speciꢂications are at T
C
= 25°C. V
CC
= 3.3V, ꢀN = 3.3V. C
W
,
5
0Ω source at RF
IN
, ꢂ
RF
= 2.7GHz, test
circuit is shown in Figure 1.
I-GRADꢀ (NOTꢀ 3ꢁ
TYP
H-GRADꢀ (NOTꢀ 4ꢁ
TYP
PARAMꢀTꢀR
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
RF Input
Input Frequency Range
Input Impedance
0.1 to 70
50||50
0.1 to 70
50||50
GHz
Ω||fF
Detector Response (RF
to OUTꢁ
IN
RF Input Power Range, T
= 25°C
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
= 100MHz
= 500MHz
= 1GHz
–38.2 to 4.5
–41.7 to 3.2
–40.8 to 3.5
–40.1 to 3.5
–40.6 to 3.3
–41.1 to 3.0
–40.2 to 3.7
–40.0 to 3.6
–40.0 to 3.6
–39.3 to 4.3
–38.7 to 4.7
–38.0 to 5.2
–38.1 to 5.0
–40.0 to 3.0
–40.0 to 2.8
–39.4 to 1.5
–38.3 to 0.2
–36.1 to 1.9
–38.2 to 4.5
–41.7 to 3.2
–40.8 to 3.5
–40.1 to 3.5
–40.6 to 3.3
–41.1 to 3.0
–40.2 to 3.7
–40.0 to 3.6
–40.0 to 3.6
–39.3 to 4.3
–38.7 to 4.7
–38.0 to 5.2
–38.1 to 5.0
–40.0 to 3.0
–40.0 to 2.8
–39.4 to 1.5
–38.3 to 0.2
–36.1 to 1.9
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
C
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
1dB LOG-Linearity Error (Note 5, 6)
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
Rev. 0
2
LTC5597
ELECTRICAL CHARACTERISTICS
The
l
denotes the speciꢂications which apply over the ꢂull operating
temperature range, otherwise speciꢂications are at T
C
= 25°C. V
CC
= 3.3V, ꢀN = 3.3V. C
W
,
5
0Ω source at RF
IN
, ꢂ
RF
= 2.7GHz, test
circuit is shown in Figure 1.
I-GRADꢀ (NOTꢀ 3ꢁ
TYP
H-GRADꢀ (NOTꢀ 4ꢁ
TYP
PARAMꢀTꢀR
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
RF Input Power Range Over Operating
Temperature Range
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
= 100MHz
= 500MHz
= 1GHz
–38.1 to 3.3
–38.4 to –0.6
–38.5 to –0.3
–40.1 to 0.2
–39.6 to –0.3
–39.0 to –0.9
–38.6 to –0.1
–40.0 to 0.3
–40.0 to 0.1
–39.2 to 0.8
–38.7 to 1.7
–37.9 to 3.0
–38.1 to 2.0
–40.0 to –0.2
–39.4 to –0.8
–40.0 to –0.9
–40.1 to –0.2
–36.1 to –0.1
–37.1 to 1.2
–36.1 to –0.6
–36.7 to –0.3
–36.6 to 0.2
–37.0 to –0.3
–37.0 to –0.9
–36.2 to 0.1
–36.4 to 0.3
–36.6 to 0.1
–36.0 to 0.8
–37.2 to 1.7
–36.7 to 2.1
–38.1 to 1.2
–36.3 to –2.9
–35.4 to –4.0
–34.9 to –3.7
–31.1 to –4.3
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
1dB LOG-Linearity Error (Note 5, 6)
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
= 70GHz
2dB LOG-Linearity Error (Note 5, 6)
3dB LOG-Linearity Error (Note 5, 6)
3dB LOG-Linearity Error (Note 5, 6)
3.5dB LOG-Linearity Error (Note 5, 6)
–27.6 to –3.2
Linear Dynamic Range, T
= 25
°
C
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
= 100MHz
= 500MHz
= 1GHz
42.7
44.8
44.3
43.7
43.9
44.0
43.8
43.6
43.7
43.6
43.5
43.3
43.2
43.0
42.8
40.9
38.4
38.0
42.7
44.8
44.3
43.7
43.9
44.0
43.8
43.6
43.7
43.6
43.5
43.3
43.2
43.0
42.8
40.9
38.4
38.0
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
C
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
(Note 6)
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Linear Dynamic Range Over Operating
Temperature Range
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
= 100MHz
= 500MHz
= 1GHz
41.5
37.8
38.2
40.3
39.3
38.1
38.5
40.4
40.2
40.1
40.4
40.9
40.1
39.8
38.6
39.1
39.9
36.1
38.3
35.5
36.5
36.8
36.7
36.1
36.3
36.8
36.8
36.9
38.9
38.8
39.3
33.4
31.4
31.3
26.8
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
1dB LOG-Linearity Error (Note 6)
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
= 70GHz
2dB LOG-Linearity Error (Note 5, 6)
3dB LOG-Linearity Error (Note 5, 6)
3dB LOG-Linearity Error (Note 5, 6)
3.5dB LOG-Linearity Error (Note 5, 6)
24.4
Rev. 0
3
LTC5597
ELECTRICAL CHARACTERISTICS
The
l
denotes the speciꢂications which apply over the ꢂull operating
temperature range, otherwise speciꢂications are at T
C
= 25°C. V
CC
= 3.3V, ꢀN = 3.3V. C
W
,
5
0Ω source at RF
IN
, ꢂ
RF
= 2.7GHz, test
circuit is shown in Figure 1.
I-GRADꢀ (NOTꢀ 3ꢁ
TYP
H-GRADꢀ (NOTꢀ 4ꢁ
TYP
PARAMꢀTꢀR
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
Logarithmic Slope, T
= 25°C (Note 7)
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
= 100MHz
= 500MHz
= 1GHz
28.6
27.7
28.0
28.5
28.3
28.2
28.4
28.5
28.5
28.6
28.6
28.7
28.7
28.3
28.3
28.3
28.3
28.0
28.6
27.7
28.0
28.5
28.3
28.2
28.4
28.5
28.5
28.6
28.6
28.7
28.7
28.3
28.3
28.3
28.3
28.0
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
C
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
27.1
29.5
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Logarithmic Slope Over Operating
Temperature Range (Note 7)
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
= 100MHz
= 500MHz
= 1GHz
27.9 to 29.2
26.9 to 28.4
27.3 to 28.7
27.8 to 29.1
27.6 to 28.9
27.5 to 28.8
27.7 to 29.0
27.8 to 29.1
27.8 to 29.1
27.9 to 29.2
27.9 to 29.3
28.0 to 29.3
28.0 to 29.3
27.7 to 28.9
27.7 to 28.9
27.6 to 28.9
27.6 to 28.7
27.2 to 28.0
27.9 to 29.2
26.9 to 28.4
27.3 to 28.7
27.8 to 29.1
27.6 to 28.9
27.5 to 28.8
27.7 to 29.0
27.8 to 29.1
27.8 to 29.1
27.9 to 29.2
27.9 to 29.3
28.0 to 29.3
28.0 to 29.3
27.7 to 28.9
27.7 to 28.9
27.6 to 28.9
27.6 to 28.7
26.6 to 28.0
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
mV/dB
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
26.4
30.4
Logarithmic Intercept, T
= 25°C
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
= 100MHz
= 500MHz
= 1GHz
–37.2
–40.7
–39.9
–39.2
–39.7
–40.1
–39.2
–39.1
–39.1
–38.3
–37.8
–37.1
–37.2
–39.1
–39.0
–38.4
–37.3
–35.2
–37.2
–40.7
–39.9
–39.2
–39.7
–40.1
–39.2
–39.1
–39.1
–38.3
–37.8
–37.1
–37.2
–39.1
–39.0
–38.4
–37.3
–35.2
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
C
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
RF
(Note 8)
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
–40.6
–38.0
Rev. 0
4
LTC5597
ELECTRICAL CHARACTERISTICS
The
l
denotes the speciꢂications which apply over the ꢂull operating
temperature range, otherwise speciꢂications are at T
C
= 25°C. V
CC
= 3.3V, ꢀN = 3.3V. C
W
,
5
0Ω source at RF
IN
, ꢂ
RF
= 2.7GHz, test
circuit is shown in Figure 1.
I-GRADꢀ (NOTꢀ 3ꢁ
TYP
H-GRADꢀ (NOTꢀ 4ꢁ
TYP
PARAMꢀTꢀR
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Logarithmic Intercept Over Operating
Temperature Range (Note 8)
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
f
RF
= 100MHz
= 500MHz
= 1GHz
–37.6 to –36.6
–41.3 to –39.9
–40.3 to –39.0
–39.6 to –38.4
–40.1 to –38.9
–40.6 to –39.3
–39.7 to –38.4
–39.5 to –38.3
–39.5 to –38.3
–38.7 to –37.5
–38.2 to –37.0
–37.4 to –36.4
–37.4 to –36.6
–39.4 to –38.3
–39.3 to –38.2
–39.5 to –36.7
–38.3 to –35.0
–36.9 to –33.2
–37.6 to –36.4
–41.3 to –39.7
–40.3 to –38.8
–39.6 to –38.2
–40.1 to –38.7
–40.6 to –39.1
–39.7 to –38.1
–39.5 to –38.0
–39.5 to –38.1
–38.7 to –37.2
–38.2 to –36.8
–37.4 to –36.2
–37.4 to –36.4
–39.4 to –38.0
–39.3 to –37.8
–39.5 to –36.3
–38.3 to –34.5
–36.9 to –32.7
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
= 2.7GHz
= 5.8GHz
= 10GHz
= 15GHz
= 18GHz
= 24GHz
= 28GHz
= 30GHz
= 39GHz
= 42GHz
= 50GHz
= 52GHz
= 60GHz
= 67GHz
= 70GHz
–41.6
–37.2
RF Input Power Range for Various
Modulation Formats (Note 9)
CDMA 9Ch fwd
–40.1 to 2.3
–40.0 to 2.3
–39.8 to 2.3
–40.8 to 1.8
–40.6 to 2.6
–40.2 to 2.8
–40.1 to 2.8
–40.2 to 1.8
–40.7 to 1.2
–40.8 to 1.8
–40.6 to 1.9
–40.4 to 2.6
–40.3 to 2.7
–40.1 to 2.3
–40.0 to 2.3
–39.8 to 2.3
–40.8 to 1.8
–40.6 to 2.6
–40.2 to 2.8
–40.1 to 2.8
–40.2 to 1.8
–40.7 to 1.2
–40.8 to 1.8
–40.6 to 1.9
–40.4 to 2.6
–40.3 to 2.7
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
CDMA 32Ch fwd
CDMA 64Ch fwd
CDMA 3 Carriers
CDMA 4 Carriers
WCDMA 1Ch Up
WCDMA 1Ch Down
WCDMA 2 Carriers
WCDMA 3 Carriers
WCDMA 4 Carriers
AWGN 5MHz BW
AWGN 10MHz BW
AWGN 15MHz BW
Propagation Delay (Note 10)
P
from –55dBm to
1.2
1.2
IN
μs
0dBm
OUT Interꢂace
Output DC Voltage
No RF Signal Present
EN = 1.1V
1.0
1.2
5.0
1.250
20
1.0
1.2
5.0
1.250
20
mV
V
P
= 10dBm
1.150
−35
1.150
-35
IN
EN = 1.1V
Output Voltage Droop
Integrated Output Noise
25mA Sourcing
25mA Sinking
6
30
6
30
mV
mV
1kHz to 6.5kHz
22
22
μV
RMS
P
IN
= 0dBm
Rise Time (Note 11)
Fall Time (Note 12)
50Ω Load at OUT
50Ω Load at OUT
2.9
8.1
2.9
8.1
μs
μs
Rev. 0
5
LTC5597
ELECTRICAL CHARACTERISTICS
The
l
denotes the speciꢂications which apply over the ꢂull operating
temperature range, otherwise speciꢂications are at T
C
= 25°C. V
CC
= 3.3V, ꢀN = 3.3V. C
W
,
5
0Ω source at RF
IN
, ꢂ
RF
= 2.7GHz, test
circuit is shown in Figure 1.
I-GRADꢀ (NOTꢀ 3ꢁ
TYP
H-GRADꢀ (NOTꢀ 4ꢁ
TYP
PARAMꢀTꢀR
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
ꢀnable (ꢀNꢁ Low = Oꢂꢂ, High = On
EN Input High Voltage (On)
EN Input Low Voltage (Off)
EN Pin Input Current
l
l
1.1
1.1
V
V
0.6
0.6
50
8
500
50
8
500
nA
μs
Turn ON Time (Note 13)
Turn OFF Time (Note 14)
50Ω Load at OUT
50Ω Load at OUT
1MΩ||11pF Load at OUT
45
100
45
100
ns
μs
Power Supply
l
Supply Voltage
2.7
3.3
33.5
50
3.6
37.3
500
2.7
3.3
33.5
50
3.6
37.3
500
V
mA
nA
Active Supply Current
Shutdown Supply Current
EN = 3.3V
EN = 0V
29.8
29.8
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime. The voltage on all pins should not exceed 3.8V,
Note ꢃ:
Range for which the LOG-Linearity Error is within
1dB.
Note 7:
Slope of the best fit straight line obtained by linear regression.
Note 8:
Extrapolated input power level (straight line obtained by linear
regression) where the voltage at OUT equals 0V.
Note 9:
Power range for which LOG-Linearity Error is within
1dB, relative
to best fit straight line for CW data (see Note 5).
V
CC
+ 0.3V or be less than –0.3V, otherwise damage to the ESD diodes
may occu
r
.
Note 2:
Not production tested. Guaranteed by design and correlation to
production tested parameters.
Note 10:
Delay from 50% change in RF
to 50% change in output voltage.
IN
Note 11:
Time required to change voltage at OUT pin from 10% to 90% of
final value. Input power stepped from –55dBm to 0dBm.
Note 12:
Time required to change voltage at OUT pin from 90% to 10% of
initial value. Input power stepped from 0dBm to –55dBm.
Note 13:
Time required to change voltage at OUT pin to 90% of final value.
Input power 0dBm.
Note 3:
The LTC5597IDC is guaranteed functional over the case
temperature range –40°C to 105°C. All limits at –40°C and 105°C are
guaranteed by design and production sample testing.
Note 4:
The LTC5597HDC is guaranteed functional over the case
temperature range –40°C to 125°C. All limits at –40°C and 125°C are
guaranteed by 100% production testing.
Note 14:
Time required to change voltage at OUT pin to 10% of initial
value. Input power 0dBm. For higher load impedance the turn-off time
will be (much) larger as the OUT interface is high impedance in shutdown
mode.
Note 5:
LOG-Linearity Error is the input-referred power measurement error
relative to the best fit straight line (output voltage vs input power in dBm)
obtained by linear regression at T
= 25°C. The input power range used
C
for the linear regression is from –37dBm to –5dBm for all frequencies. An
offset of 0.5dB is added to the LOG-intercept for all frequencies to center
the errors over the full temperature range. See also the Application Section
for an explanation of measurement error metrics.
Rev. 0
6
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Output Voltage, Linearity Error vs
RF Input Power at 100MHz
Output Voltage, Linearity Error vs
Output Voltage, Linearity Error vs
RF Input Power at 1GHz
RF Input Power at 500MHz
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃ0ꢄ
ꢀꢀꢁꢂ ꢃ0ꢄ
ꢀꢀꢁꢂ ꢃ0ꢄ
Output Voltage, Linearity Error vs
RF Input Power at 2.7GHz
Output Voltage, Linearity Error vs
RF Input Power at 5.8GHz
Output Voltage, Linearity Error vs
RF Input Power at 10GHz
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃ0ꢄ
ꢀꢀꢁꢂ ꢃ0ꢀ
ꢀꢀꢁꢂ ꢃ0ꢄ
Output Voltage, Linearity Error vs
RF Input Power at 15GHz
Output Voltage, Linearity Error vs
RF Input Power at 18GHz
Output Voltage, Linearity Error vs
RF Input Power at 24GHz
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃ0ꢄ
ꢀꢀꢁꢂ ꢃ0ꢁ
ꢀꢀꢁꢂ ꢃ0ꢂ
Rev. 0
7
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Output Voltage, Linearity Error vs
RF Input Power at 28GHz
Output Voltage, Linearity Error vs
Output Voltage, Linearity Error vs
RF Input Power at 39GHz
RF Input Power at 30GHz
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄ0
ꢀꢀꢁꢂ ꢃꢄꢄ
Output Voltage, Linearity Error vs
RF Input Power at 42GHz
Output Voltage, Linearity Error vs
RF Input Power at 50GHz
Output Voltage, Linearity Error vs
RF Input Power at 52GHz
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢀ
Output Voltage, Linearity Error vs
RF Input Power at 60GHz
Output Voltage, Linearity Error vs
RF Input Power at 67GHz
Output Voltage, Linearity Error vs
RF Input Power at 70GHz
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢂ
ꢀꢀꢁꢂ ꢃꢄꢅ
Rev. 0
8
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Linearity Error Temperature
Linearity Error Temperature
Linearity Error Temperature
Variation from 25°C at 1GHz
ꢀ.0
Variation from 25°C at 100MHz
Variation from 25°C at 500MHz
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ.ꢁ
ꢀ0ꢁꢂꢃ
ꢀ.0
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀ.ꢁ
ꢀꢁ0ꢂꢃ
ꢀ.0
ꢀꢁꢁꢂꢃ
0.ꢀ
0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄꢁ
ꢀꢀꢁꢂ ꢃꢄ0
ꢀꢀꢁꢂ ꢃꢄꢅ
Linearity Error Temperature
Variation from 25°C at 2.7GHz
Linearity Error Temperature
Linearity Error Temperature
Variation from 25°C at 10GHz
Variation from 25°C at 5.8GHz
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄꢄ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢅ
Linearity Error Temperature
Variation from 25°C at 15GHz
Linearity Error Temperature
Variation from 25°C at 18GHz
Linearity Error Temperature
Variation from 25°C at 24GHz
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃꢄꢀ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢂ
Rev. 0
9
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Linearity Error Temperature
Variation from 25°C at 28GHz
Linearity Error Temperature
Variation from 25°C at 30GHz
Linearity Error Temperature
Variation from 25°C at 39GHz
ꢀ.0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ.ꢁ
ꢀ0ꢁꢂꢃ
ꢀ.0
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀ.ꢁ
ꢀꢁ0ꢂꢃ
ꢀ.0
ꢀꢁꢁꢂꢃ
0.ꢀ
0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄ0
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢁ
Linearity Error Temperature
Variation from 25°C at 42GHz
Linearity Error Temperature
Variation from 25°C at 50GHz
Linearity Error Temperature
Variation from 25°C at 52GHz
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢄ
Linearity Error Temperature
Variation from 25°C at 60GHz
Linearity Error Temperature
Variation from 25°C at 67GHz
Linearity Error Temperature
Variation from 25°C at 70GHz
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ
ꢀ
ꢀ
ꢀ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂꢃꢄꢅꢀ
ꢀꢀꢁꢂ ꢃꢄꢅ
Rev. 0
10
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Linearity Error vs RF Input Power for
Various Modulation Formats, Regression
Using CW Slope and Intercept Values
Output Voltage vs RF Input Power
for Various Modulation Formats
ꢀ.0
ꢀ.0
ꢀ.0
ꢀ.0
0
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀꢁꢂꢃꢄꢅeꢆ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈ
ꢀꢁꢂꢃꢄꢅ0ꢆꢇꢈ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁ
ꢀꢁꢂꢃꢄꢅ0eꢆ
ꢀꢁꢂꢃꢄꢅꢆeꢇ
ꢀꢁ
ꢀꢁꢂꢃꢄꢅꢆRꢇ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢈ
ꢀꢁꢂꢃꢄꢅꢆRꢇ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢈ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢂ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁꢂꢃꢄꢂꢅꢆꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢁꢄRꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢁꢄRꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢁꢄRꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢂꢇꢁꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢅꢂꢇꢁꢁꢈ
ꢀꢁꢂꢃꢄꢅꢆꢁꢇꢈꢈ
ꢀꢁꢂꢃꢄꢅꢆꢁꢇꢈꢈ
ꢀꢁꢂꢃꢄꢅꢆꢁꢇꢈꢈ
ꢀꢁꢂꢃꢄꢅꢂꢆꢁꢇꢈ
ꢀꢁꢂꢃꢄꢅꢂꢆꢁꢁꢇ
ꢀꢁ.0
ꢀꢁ.0
ꢀꢁ.0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢂ
Power Measurement Error
Relative to CW for Various
Modulation Formats
Output
T
r
ansient Response to RF
Input Pulse
ꢀ
ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀꢁꢂꢃ
0ꢀꢁꢂ
ꢀꢁꢂꢃꢄꢅ0eꢆ
ꢀꢁꢂꢃꢄꢅꢆeꢇ
ꢀꢁꢂꢃꢄ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄ ꢄꢅ
ꢀꢁꢂꢃꢄꢅeꢆ
ꢀꢁꢂꢃꢄꢅꢆRꢇ
ꢀꢁꢂꢃꢄꢅꢆRꢇ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢂ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢁꢄRꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢁꢄRꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢁꢄRꢇ
ꢀꢁꢂꢃꢄꢅꢂꢆꢅꢂꢇꢁꢈꢉ
ꢀꢁꢂꢃꢄꢅꢆꢇꢅꢂꢇꢁꢁꢈ
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
0
ꢀ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
TIME (μs)
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄ0
ꢀꢀꢁꢂ ꢃꢄꢁ
Output
T
r
ansient Response with
CW RF and Enable Pulse
Magnitude S11 vs Frequency
0
ꢀꢁ
ꢀ
ꢀ
0
ꢀꢁ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀ0ꢁꢂꢃ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
0ꢀꢁꢂ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅꢆ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁ0ꢂꢃꢄ
0
ꢀ0
ꢀ0
ꢀ0
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
Rꢀ ꢀRꢁꢂꢃꢁꢄꢅꢆ ꢇꢈꢉꢊꢋ
TIME (μs)
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢅ
Rev. 0
11
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Logarithmic Intercept vs
Frequency
Logarithmic Slope vs Frequency
ꢀꢁꢂ
ꢀ0.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
0.0ꢀ
0.ꢀ
ꢀ
ꢀ0
ꢀ00
0.0ꢀ
0.ꢀ
ꢀ
ꢀ0
ꢀ00
Rꢀ ꢀRꢁꢂꢃꢁꢄꢅꢆ ꢇꢈꢉꢊꢋ
Rꢀ ꢀRꢁꢂꢃꢁꢄꢅꢆ ꢇꢈꢉꢊꢋ
ꢀꢀꢁꢂ ꢃꢄꢄ
ꢀꢀꢁꢂ ꢃꢄꢅ
Power Measurement Error vs
Frequenc
y
,
R
elative to Response
at 18GHz
Output Voltage vs Frequency
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
0ꢀꢁꢂ
0ꢀꢁꢂ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁ0ꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
0.ꢀ
ꢀ
ꢀ0
ꢀ00
0.ꢀ
ꢀ
ꢀ0
ꢀ00
Rꢀ ꢀRꢁꢂꢃꢁꢄꢅꢆ ꢇꢈꢉꢊꢋ
Rꢀ ꢀRꢁꢂꢃꢁꢄꢅꢆ ꢇꢈꢉꢊꢋ
ꢀꢀꢁꢂ ꢃꢄꢀ
ꢀꢀꢁꢂ ꢃꢄꢅ
Output Voltage vs Output Current
(Positive=Sourcing, Negative=Sinking)
Output Voltage vs RF Input Power
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀ.ꢁꢂꢃꢄ
ꢀ.ꢁꢂꢃꢄ
ꢀ.0ꢁꢂꢃ
0.ꢀꢁꢂꢃ
0.ꢀꢁꢂꢃ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
0
ꢀ
ꢀ0
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
0
ꢀ0
ꢀ0
ꢀ0
ꢀ0
ꢀꢁꢂꢃꢁꢂ ꢄꢁRRꢅꢆꢂ ꢇꢈꢉꢊ
ꢀꢀꢁꢂ ꢃꢄꢂ
ꢀꢀꢁꢂ ꢃꢄꢅ
Rev. 0
12
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
Power Measurement Error vs
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Detector Error vs Output Load Current
(Positive=Sourcing, Negative=Sinking)
Output Voltage vs Supply Voltage
Supply Voltage, Relative to 3.3V
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0
ꢀ.0
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ0.ꢁ
ꢀꢁ.0
ꢀꢁ.ꢂ
ꢀꢁ.0
ꢀ.0
ꢀ.ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
0
ꢀ0
ꢀ0
ꢀ0
ꢀ0
ꢀ.0
ꢀ.ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀꢁꢂꢂ
ꢃ
ꢄ
ꢅ
ꢆ
ꢃ
ꢇ
ꢈ
ꢉꢊ ꢋꢅꢌ
ꢀꢁꢂꢃꢁꢂ ꢄꢁRRꢅꢆꢂ ꢇꢈꢉꢊ
ꢀꢁꢂꢂ
ꢃ
ꢄ
ꢅ
ꢆ
ꢃ
ꢇ
ꢈ
ꢉꢊ ꢋꢅꢌ
ꢀꢀꢁꢂ ꢃꢀꢄ
ꢀꢀꢁꢂ ꢃꢄꢁ
ꢀꢀꢁꢂ ꢃꢀ0
Output Voltage at No RF Input
Power Cumulative Distribution
Supply Current vs Supply Voltage
Supply Current vs RF Input Power
ꢀ0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀ0
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀ0
ꢀ
ꢀ00
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀꢁ0ꢂꢃ
0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁꢂ
ꢀꢁ0
ꢀꢁ
0
ꢀ
ꢀ0
0
0.ꢀ
0.ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.ꢁ
0
0.ꢀ
0.ꢀ
ꢀ.ꢁ
ꢀ.ꢁ
ꢀ.0
ꢀꢁꢂꢃꢄ ꢂꢅꢆꢇR ꢈꢉꢊꢋꢌ
ꢀꢁꢂꢂ
ꢃ
ꢄ
ꢅ
ꢆ
ꢃ
ꢇ
ꢈ
ꢉꢊ ꢋꢅꢌ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢀꢁꢂ ꢃꢀꢄ
ꢀꢀꢁꢂ ꢃꢀꢄ
ꢀꢀꢁꢂ ꢃꢀꢄ
Output Voltage at
−
35dBm
Cumulative Distribution
Output Voltage at
−
30dBm
Cumulative Distribution
Output Voltage at
−
25dBm
Cumulative Distribution
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀ0
ꢀ0
ꢀ00
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀꢀ0
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀ00
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀ00
ꢀꢁ0
ꢀꢀ0
ꢀꢁ0
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢀꢁꢂ ꢃꢀꢀ
ꢀꢀꢁꢂ ꢃꢀꢄ
ꢀꢀꢁꢂ ꢃꢀꢂ
Rev. 0
13
LTC5597
V
CC
= 3.3V, EN = 3.3V, T
C
= 25°C. C
W
,
5
0
Ω
Source
TYPICAL PERFORMANCE CHARACTERISTICS
at RF
IN
, f
RF
= 2.7GHz, test circuit is shown in Figure 1.
Output Voltage at
−
20dBm
Output Voltage at
−
15dBm
Output Voltage at
−
10dBm
Cumulative Distribution
Cumulative Distribution
Cumulative Distribution
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀ0
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀ00
ꢀꢁ0
ꢀꢀ0
ꢀꢁ0
ꢀ00
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀ00
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀꢀ0
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢀꢁꢂ ꢃꢀꢄ
ꢀꢀꢁꢂ ꢃꢀꢁ
ꢀꢀꢁꢂ ꢃꢄ0
Output Voltage at
−
5dBm
Cumulative Distribution
Output Voltage at 0dBm
Cumulative Distribution
Output Voltage at 5dBm
Cumulative Distribution
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀ0ꢁ0
ꢀ0ꢁ0
ꢀ0ꢁ0
ꢀꢀ00
ꢀꢀꢁ0
ꢀꢀꢁ0
ꢀꢀꢁ0
ꢀꢀꢁ0
ꢀ00
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀꢁ0
ꢀ000
ꢀꢀꢁ0
ꢀꢀꢁ0
ꢀꢀꢁ0
ꢀꢁ00
ꢀꢁꢀ0
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢁꢂꢃꢁꢂ ꢄꢀ
ꢅ
ꢂ
ꢆ
ꢇꢈ ꢉꢊꢄꢋ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢅ
Logarithmic Slope Cumulative
Distribution
Logarithmic Intercept Cumulative
Distribution
Supply Current Cumulative
Distribution
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀ00
ꢀ00
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀꢁꢂꢃꢄ
ꢀ0ꢁꢂꢃ
ꢀꢁꢂꢃ
ꢀ0
ꢀ0
ꢀ0
ꢀ0
0
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁ0ꢂꢃ
ꢀꢁ.0
ꢀꢁ.0
ꢀꢁ.0
ꢀꢁ.0
ꢀ0.0
ꢀꢁ0.ꢂ
ꢀꢁ0.0
ꢀꢁꢂ.ꢃ
ꢀꢁꢂ.0
ꢀꢁꢂ.ꢃ
ꢀꢁꢂ.0
ꢀꢁ
ꢀ0
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁ
ꢀꢁꢂꢃRꢄꢅꢆꢇꢄꢈ ꢉꢀꢁꢊꢋ ꢌꢍꢎꢏꢐꢑꢒ
ꢀꢁꢂꢃRꢄꢅꢆꢇꢄꢈ ꢄꢉꢅꢊRꢈꢊꢋꢅ ꢌꢍꢎꢏꢐ
ꢀꢁꢂꢂ
ꢃ
ꢄ
ꢅ
ꢁRRꢆꢇꢈ ꢉꢊꢋꢌ
ꢀꢀꢁꢂ ꢃꢄꢅ
ꢀꢀꢁꢂ ꢃꢄꢀ
ꢀꢀꢁꢂ ꢃꢄꢄ
Rev. 0
14
LTC5597
PIN FUNCTIONS
V
(Pin 1):
Power Supply Pin. Typical current consump-
RF (Pin
6):
RF Input. This pin is internally DC-coupled to
CC
IN
tion is 33mA at room temperature. This pin should be
GND through a 50Ω termination resisto
r
. To
a
void damage
to the internal circuit, the DC voltage applied to this pin
shoul
d
n
o
t
e
xcee
d
1
V
.
T
h
e
g
round-signal-groun
d
a
rrange-
ment of pins 5 through 7 support termination of pin 6 by
a high frequency transmission line, such as a grounded
co-planar waveguide (GCPW). No external decoupling
capacitor is necessary as long as the DC voltage on pin
6 is kept below 1V.
externally bypassed with a 100nF capacito
r
.
OUT(Pin 2):
Detector Output. The DC voltage at this pin
varies linearly with the RF input power level in dBm. This
output is able to drive a 50Ω load. To avoid permanent
damage, do not short to V
or GND. In shutdown mode
CC
(EN = Low), this interface becomes high impedance, to
avoid discharge of capacitors in an external ripple filte
r
.
EN (Pin 8):
Chip Enable. A voltage above 1.1V applied to
this pin will bring the device into normal operating mode.
A voltage below 0.6V will bring the device into a low power
shutdown mode. Do not float this pin.
F
L
T
R (Pin 3):
An optional capacitor connected between
F
L
T
R
a
n
d
O
U
T
(
Pi
n
2
)
r
educe
s
t
h
e
d
etecto
r
r
ippl
e
a
veraging
bandwidth. This will also increase the rise and fall times
of the detecto
r
. To
a
void permanent damage to the circuit,
the DC voltage at this pin should not exceed 0.4V.
GND (Pins 4, 5, 7, Exposed Pad Pin 9):
Circuit Ground.
All ground pins are internally connected togethe
r
.
P
ins 5
and 7 should be used as RF return ground and connected
to the transmission line interfacing to RF
(pin 6).
IN
Rev. 0
15
LTC5597
TEST CIRCUIT
R1
470Ω
R2
1Ω
EN
3.3V
C8
10pF
C1
100nF
8
1
2
EN
V
CC
L
T
C5597
7
6
5
J3
GND
OUT
F
L
T
R
GND
OUT
C3
NC
C4
NC
R7
NC
3
4
J1
RF INPUT
RF
IN
GND
EXPOSED PAD
5597 F01
9
REF DES
C1
VALUE
100nF
NC
SIZE
0402
0402
0402
0402
0402
0402
PART NUMBER
MURATA 935152424610-T3N
C3, C4
C8
10pF
470Ω
1Ω
MURATA GRM155C1H100JA01D
VISHAY CRCW0402470RFKED
VISHAY CRCW04021R00FNED
R1
R2
R7
NC
J1
1.85mm JACK to EDGE-
LAUNCH, DC-67GHz
SOUTHWEST MICROWAVE 1892-03A-6
E.
F
.
J
OHNSON, 142-0701-851
J3
SMA 50Ω EDGE-LAUNCH
Figure 1. Test Schematic Optimized for 100MHz to 70 GHz
ꢀꢀꢁꢂ ꢃ0ꢄꢅ
ꢀꢀꢁꢂ ꢃ0ꢄꢅ
Figure 2b. Bottom Side of Evaluation Board
Figure 2a. Top Side of Evaluation Board
Rev. 0
16
LTC5597
APPLICATIONS INFORMATION
The LTC5597 is a true RMS RF power detecto
r
,
c
apable
of measuring an RF signal over the frequency range from
100MHz to 70GHz, independent of input waveforms with
differen
t
c
res
t
f
actor
s
s
uc
h
a
s
C
W
,
W
CDMA
,
O
FD
M
(
L
T
E
a
nd
WiFi) signals. Up to 35dB dynamic range is achieved with
a very stable output within the full case temperature range.
conductors. Via dimensions should be kept as small as
possible. The
evaluation board uses vias with a diameter
of 6mils or 8mils including the metal edge ring (donut).
ꢀ0ꢁꢂꢃꢄ
ꢅꢁꢂꢃꢄ
ꢅꢁꢂꢃꢄ
ꢆꢁꢂꢃꢄ
Rꢇꢈ00ꢈ
RF Input
ꢆꢆꢅꢌ ꢍ0ꢎ
ꢉꢊꢋ
ꢉꢊꢋ
The single-ended RF input is internally matched to 50Ω,
both in active mode and the low power shutdown mode.
The DC voltage applied to this pin should be kept below
1V, to avoid damage to the internal circuitry, depicted in
Figure 3.
Figure 4. Grounded Co-Planar Waveguide (GCPW) to Interface RF
IN
F
L
T
R Interface (Pin 3):
This pin enables additional suppression of high frequency
ripple in the detector output signal, at the expense of a
slower detector response (longer rise time, fall time and
propagation delay). As depicted in Figure 1, an external
capacitor C3 connected between F
L
T
R and OUT enlarges
the amount of feedback capacitance across the output
amplifie
r
,
a
nd reduces the output filter bandwidth with-
out affecting the current drive capability of the LTC5597.
Suitable capacitance values are in the range from 10pF
up to 1nF, but the total of feedback and load capacitance
(from OUT to signal ground) should not exceed 1nF.
Larger capacitance values may result in instability of the
output drive
r
.
L
T
C5597
ꢀꢁꢂꢃꢄ
RF
IN
6
50Ω
50fF
5597 F03
Figure 3. Simplified Schematic of the RF
IN
Interface
To avoid permanent damage to the chip, the DC voltage
at the F
L
T
R pin should not exceed 0.4V. Similarly, it is not
recommended to supply a DC bias current to this pin in
excess of about 100μA.
Together with GND Pin 5 and Pin 7, RF
(Pin 6) forms
IN
a ground-signal-ground configuration that can interface
directly with a co-planar waveguide on the PCB. The rec-
ommended design is depicted in Figure 4.
OUT Interface (Pin 2):
To minimize reflections at high frequencies, the center
The OUT interface, depicted in Figure 5, is a class-AB
CMOS output stage that can source and sink over 20mA
of load current.
strip has been chosen the same width as the RF
pack-
IN
age pin (10mils).
The LTC5597 evaluation board uses a 5mils thick layer of
Rogers RO3003 material for the top substrate to achieve
low dielectric losses up to 70GHz. The other two sub-
strates on the board are regular FR-4 material. Using this
configuration
,
a
5
0
Ω
c
haracteristi
c
i
mpedanc
e
i
s
o
btained
for a 9mils gap width between the center strip and the
two ground return conductors. Vias connecting the top
ground conductors with the second metal ground plane
should be placed along the edge of the GCPW top ground
It is able to drive a load resistance of 50Ω (or higher) over
the full output voltage range. Short-circuiting the OUT
interface should be avoided though, as this can lead to
permanen
t
d
amag
e
o
f
t
h
e
d
evice. Th
e
o
utpu
t
d
rive
r
i
s
s
table
for capacitive loads up to at least 1nF. This includes any
externa
l
f
eedbac
k
c
apacitanc
e
b
etwee
n
O
U
T
a
n
d
F
L
T
R
,
w
hich
is essentially experienced as a load by the driver amplifie
r
.
Rev. 0
17
LTC5597
APPLICATIONS INFORMATION
ꢀ
ꢀ
0
Additional ripple filtering using larger capacitances can
be achieved by connecting a series-RC low pass filter to
OU
T
.
T
his however reduces the current drive capability
of the output signal, since the filter resistor is placed in
series with OU
T
.
ꢀꢁ
ꢀ.ꢁ
ꢀ.0
0.ꢀ
0.ꢀ
0.ꢀ
0.ꢀ
0
In general, the rise time of the LTC5597 is much shorter
than the fall time. An external feedback capacitor between
F
L
T
R
a
n
d
O
U
T
i
ncrease
s
b
ot
h
r
is
e
a
n
d
f
al
l
t
ime
,
w
hil
e
a
n
R
C
filter connected in series with OUT will primarily increase
the rise time (as long as the time constant is smaller than
the fall time).
50Ω LOAD
1MΩ LOAD
1MΩ
LOAD
0
ꢀ00
ꢀ00
ꢀ00
TIME (μs)
ꢀ00
ꢀ000
ꢀꢁ00
ꢀꢀꢁꢂ ꢃ0ꢄ
ꢄ
ꢅꢅ
Figure 6. Output Voltage Turn-Off
T
r
ansient for 1MΩ||11pF and 50Ω
Load Impedance. Input Power 0dBm, Input Frequency 2700MHz.
Enable Interface (Pin 8)
ꢆ
A simplified schematic of the EN pin interface is shown
in Figure 7. The CMOS logic brings the device in its ac-
tive operating mode for input voltages above 1.1V. Input
voltages below 0.6V bring it into a low power shutdown
mode. The voltage applied to the EN pin should never
ꢀꢀꢁꢂ ꢃ0ꢀ
Figure 5. Simplified Schematic of the OUT Interface
exceed V
by more than 0.3V, and never decrease below
CC
GND by 0.3V. Otherwise, permanent damage to the ESD
diodes may occu
r
.
P
lacing an external resistor of at least
several hundred Ω in series with the EN interface is an
effectiv
e
w
a
y
t
o
a
voi
d
s
uc
h
d
amage
,
b
y
l
imitin
g
t
h
e
c
urrent
flowing through the ESD diodes (see Figure 1).
The OUT interface becomes high impedance when the
device is put into shutdown mode (EN = Low). This pre-
vents discharge of capacitors in a ripple filter connected
to the OUT interface. The fall time of the voltage at the
OUT interface when the device is turned off (high to low
transitio
n
o
f
E
N
)
i
s
t
herefor
e
d
ependen
t
o
n
t
h
e
l
oa
d
i
mped-
ance. Figure 6 shows the output voltage transient when
the device is turned off for a 1MΩ load impedance and a
50Ω load impedance.
ꢄ
ꢅꢅ
ꢆꢇꢈꢉRꢇꢊꢋ
ꢋꢌꢍꢆꢅ
ꢅꢆRꢅꢎꢆꢈ
ꢉꢇ ꢏ
ꢀꢀꢁꢂ ꢃ0ꢂ
Figure 7. Simplified Schematic of the EN Interface
Rev. 0
18
LTC5597
APPLICATIONS INFORMATION
Supply Voltage Ramping
In Figure 8, P
represents the power level measured
MEAS
by the system, i.e. the power level the system thinks is
Fast ramping of the supply voltage can cause a current
glitch in the internal ESD protection circuits. Depending
on the supply inductance, this could result in a supply
voltage overshooting at the initial transient that exceeds
th
e
m
aximu
m
r
ating
.
A
s
uppl
y
v
oltag
e
r
am
p
t
im
e
o
f
g
reater
than 1ms is recommended. In case this voltage ramp
time is not controllable, a small series resistor should be
presen
t
a
t
i
t
s
i
nput
,
w
hil
e
P
r
epresent
s
t
h
e
a
ctua
l
p
ower
ACT
leve
l
p
resen
t
a
t
t
h
e
d
etecto
r
i
nput
.
T
h
e
p
owe
r
m
easurement
error thus equals the difference:
P
ERR
= P
– P
.
MEAS
ACT
The more the interpreter knows about the operating
conditions and transfer of the detecto
r
,
t
he smaller the
measurement error that can be achieved. For example,
the interpreter may assume that the detector response is
perfectly linear in dB, such that the relationship between
input power and output voltage is a straight line:
inserted in between the V
pin and the supply voltage
CC
source to mitigate the problem and self protect the IC.
The 1Ω resistor R2 and capacitor C1 shown in Figure 1
serve this purpose.
High Accuracy Power Measurement
V
OUT
= SLOPE • (P
− P
)
INTERCEPT
MEAS
Th
e
p
owe
r
m
easuremen
t
a
ccurac
y
a
chieve
d
u
sin
g
a
p
ower
detector is not only determined by the performance of the
power detector device itself, but also by the approach/
methods used to interpret the DC power detector output
signal. This can be understood by considering Figure 8.
This results in a power measurement error equal to:
LOG-Linearity Error = V
/SLOPE + P
– P
ACT
OUT
INTERCEPT
Th
e
p
arameter
s
S
LOP
E
a
n
d
P
th
e
L
OG-slop
e
a
nd
INTERCEP
T
,
LOG-intercept, are best obtained from the actual detector
response using linear regression over a suitable power
range (where the detector response is close to linear).
Better accuracy/smaller errors are obtained if SLOPE and
ꢊ
ꢋꢌꢍ
ꢅꢋꢓꢇR
ꢔꢇꢍꢇꢎꢍꢋR
ꢏꢐꢍꢇRꢅRꢇꢍꢇR
ꢕꢇꢉꢍꢏꢆꢈꢍꢋRꢖ
ꢅ
ꢅ
ꢆꢇꢈꢉ
ꢈꢎꢍ
P
are determined for:
Rꢃ ꢏꢐꢅꢌꢍ
ꢉꢏꢑꢐꢈꢒ
ꢒꢃ ꢔꢇꢍꢇꢎꢍꢋR
ꢋꢌꢍꢅꢌꢍ ꢊꢋ
ꢒ
ꢍ
ꢈ
ꢑꢇ
ꢆꢇꢈꢉꢌRꢇꢔ
ꢏꢐꢅꢌꢍ ꢅꢋꢓꢇR
ꢀꢀꢁꢂ ꢃ0ꢄ
INTERCEPT
•
Each detector device individually
Each operating temperature
Each operating frequency
•
Figure 8. Power Measurement Concept
•
Systems for accurate power level measurements on RF
signals can conceptually be thought to consist of two
elements:
To achieve the best accuracy, it is recommended to de-
termine SLOPE and P
for each individual unit,
INTERCEPT
requiring a 2-point factory calibration. When temperature
•
A high accuracy power detector (like the LTC5597),
converting the power level of an RF signal into a DC
voltage or current;
drif
t
e
ffect
s
a
r
e
t
o
b
e
i
ncluded
,
S
LOP
E
a
n
d
P
n
eed
INTERCEPT
to be determined at different operating temperatures and
the system needs to incorporate a temperature sensor to
determine which parameter values to use for the current
operating temperature.
•
An interpreter (also called an estimator), translating
the DC output voltage or current of the power detector
back to a power level.
Rev. 0
19
LTC5597
APPLICATIONS INFORMATION
The LOG-linearity error curves in the Typical Performance
Characteristics section were obtained using linear
regression, applied to the response of the individual
detector devices at T = 25°C. For all frequencies, the
input power range from –37dBm to –5dBm was used. The
resulting LOG-linearity error tends to have larger negative
values than positive values. To center the error curves
within the
1dB range, an additional 0.5dB was added
A better measurement accuracy is achieved if the inter-
preter uses the actual detector response at T = 25°C as
model for the detecto
r
,
i
nstead of the perfect linear-in-dB
response described above. The resulting measurement
erro
r
,
t
he temperature drift erro
r
,
e
quals:
Temperatur
e
D
rif
t
E
rro
r
=
[
V (T
)
–
V (25°C)]/SLOPE
OUT
OUT
A system that achieves this measurement error should
store the full output voltage vs input power response of
the detector with suitable resolution. The error curves
displayed on page 9 and 10 represent the achieved power
measurement accuracy using this configuration.
to the P
paramete
r
.
T
his slightly increases the
INTERCEPT
measurement error at T = 25°C, but results in a smaller
error over the full temperature range. The calculated
LOG-slope and LOG-intercept numbers are displayed in
the tables on page 4 and 5.
Rev. 0
20
LTC5597
PACKAGE DESCRIPTION
DC Package
8-Lead Plastic DFN (2mm
×
2mm), Flip Chip
ꢀReꢁeꢂeꢃꢄe ꢅꢆꢇ ꢈꢉꢊ ꢋ 0ꢌꢍ0ꢎꢍꢏꢐꢌꢑ Rev ꢒꢓ
0.70
±
0.05
1.15
±
0.05
2.55
±
0.05
0.25
±
0.05
PACKAGE OUTLINE
0.25
±
0.05
0.50 BSC
1.60
±
0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
R = 0.115
TYP
5
8
0.40
±
0.10
0.20
±
0.10
2.00
±
0.10
(4 SIDES)
PIN 1 NOTCH
R = 0.15
PIN 1 BAR
TOP MARK
(SEE NOTE 6)
0.50
±
0.10
(DC) DFN 0616 REV A
4
1
0.23
±
0.05
0.50 BSC
0.75
±
0.05
0.200 REF
1.55
±
0.10
(2 SIDES)
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. Howeve
r
,
n
o responsibility is assumed by Analog
21
LTC5597
TYPICAL APPLICATION
100MHz to 70GHz Power Measurement
1Ω
3.3V
100nF
ENABLE
EN
V
CC
L
T
C5597
GND
OUT
ADC
C
F
L
T
R
RF
IN
RF
IN
F
L
T
R
GND
GND
5597 TA02
RELATED PARTS
PART NUMBER
RF Power Detectors
DESCRIPTION
COMMENTS
2 GHz to 67 GHz, 500 MHz BW Envelope Detector
0.5 to 1ns propagation delay, 0.6/1.3ns rise/fall time, 40dB dynamic range up to
43.5GHz.
100MHz to 40GHz Linear-in-dB RMS Power
Detector with 35dB Dynamic Range
Fast Responding, 45 dB Range, 0.5 GHz to 43.5
GHz Envelope Detector
1dB Flat Response from 200MHz to 30GHz, ꢀ
1dB Erro
r
,
2
9mV/dB
Logarithmic Slope.
Schottky detector with accurate linearization, 40MHz envelope bandwidth, 4ns
output rise time.
50 dB, Logarithmic Detecto
r
,
1
-23 GHz
E-Band Detecto
r
,
7
1-86 GHz
Fast rise/fall time: 12ns/65ns, 3.3V.
24dB Dynamic Range, −0.5dBm to +23.5dBm, Insertion loss 0.45dB.
Mixers
24 GHz to 29.5 GHz, 5G Up/Down converter
Baseband IQ or Image Reject. LO doubler and quadrupler modes. 1.5GHz RF
bandwidth.
Rev. 0
06/20
ANALOG DEVICES, INC. 2020
22
