Skyworks-Solutions-SKY65404-31
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DATA SHEET
SKY65404-31: 5 GHz Low-Noise Amplifier
V_ENABLE V
CC
Bia
s
Applications
802.11a/n/ac radios
5 GHz ISM radios
Smartphones
Notebooks, netbooks, and tablets
5
G
Hz
LNA
RF_IN
RF_OUT
Access points, routers, and gateways
Wireless video systems
Y25
6
7
Figure 1. SKY65404-31 LNA Block Diagram
Features
Ultra-low noise figure: 1.0 dB
4.9 GHz to 5.9 GHz operation
Enable/disable mode
Description
The SKY65404-31 is an ultra low-noise amplifier (LNA) intended
for 5 GHz wireless receiver applications. Its industry-leading noise
figure (NF), together with high linearity, makes it ideal as a first-
stage LNA in 802.11a wireless local area network (WLAN) radios.
High IIP3: +7 dBm
High gain: 13 dB
Operating with a single supply voltage, the SKY65404-31
consumes only 10 mA of current. The device includes a shutdown
mode to save power when the receiver is inactive.
2.8 to 5.0 V single-supply operation
QFN (6-pin, 1.5 x 1.5 mm) package
(MSL1, 260
C per JEDEC J-STD-020)
The tiny package footprint of the SKY65404-31, requiring only
four external components, enables the industry’s smallest PCB
area needed to implement a 5 GHz LNA.
S
kywork
s G
reen
TM
product
s
are compliant with
A block diagram of the SKY65404-31 is shown in Figure 1. The
device package and pinout for the 6-pin Quad Flat No-Lead (QFN)
are shown in Figure 2. Signal pin assignments and functional pin
descriptions are described in Table 1.
all applicable legi
s
lation and are halogen-free.
For additional information, refer to
Skyworks
Definition of Green
TM
, document number
S
Q04–0074.
V_ENABLE
1
6
5
4
V
CC
G
ND
G
ND
2
3
RF_IN
RF_OUT
S1351
Figure 2. SKY65404-31 Pinout
(Top View)
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[781] 376-3000
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DATA SHEET
• SKY65404-31:
5 GHz LNA
Table 1. SKY65404-31 Pin Assignments and Signal Descriptions
Pin
1
Name
Description
V_ENABLE
GND
Enable control input
Ground
2
3
RF_IN
RF_OUT
GND
LNA input
4
LNA output
5
Ground
6
VCC
Supply voltage for LNA
Electrical and Mechanical Specifications
Technical Description
The SKY65404-31 is matched at the RF output port (pin 4) and
requires only a shunt capacitor match at the RF input port (pin 3).
The VCC signal (pin 6) requires a simple bypass circuit. An
external resistor on the V_ENABLE signal (pin 1) allows a wide
range of control voltages to be used. Shutdown mode is achieved
by switching the V_ENABLE signal to 0 V.
The absolute maximum ratings of the SKY65404-31 are provided
in Table 2. The recommended operating conditions are specified
in Table 3 and electrical specifications are provided in Table 4.
Table 5 provides the control logic for the SKY65404-31.
Performance characteristics for the SKY65404-31 are illustrated
in Figures 3 through 9.
Table 2. Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Minimum
Maximum
5.5
Units
Supply voltage
VCC
0
V
V
DC voltage at control ports
V
ENABLE
–0.3
5.0
RF input power:
LNA enabled
LNA disabled
RF
IN
+1
+10
dBm
dBm
Operating temperature
Storage temperature
Electrostatic discharge:
T
A
–40
–40
+85
C
C
T
STG
+125
Charged Device Model (CDM), Class 3
Human Body Model (HBM), Class 0
Machine Model (MM), Class A
500
150
50
V
V
V
Note 1
: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal values. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION
: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This
device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the
human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all
times.
Skyworks Solutions, Inc.
• Phone
[781] 376-3000
• Fax
[781] 376-3100
• sales@skyworksinc.com • www.skyworksinc.com
2
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DATA SHEET
• SKY65404-31:
5 GHz LNA
Table 3. Recommended Operating Conditions (@ +25 °C, VCC = 3 V)
Parameter
Symbol
Minimum
2.8
Typical
Maximum
5.0
Units
V
Supply voltage
VCC
f
3.0
RF frequency range
4900
–40
5900
MHz
C
Operating temperature range
T
A
+25
+85
DC voltage at control port:
High
Low
V
ENABLE
_
H
V
ENABLE
_
L
2.5
0
3.0
0
3.5
0.2
V
V
Table 4. Electrical Characteristics (4900-5900 MHz) (Note 1)
(VCC = 3 V, T
A
= +25
C, V_ENABLE = 3 V, Unless Otherwise Noted)
Parameter Symbol
Test Conditions
Minimum
Typical
Maximum
Units
Enable Mode
Gain
S
21
11
0.8
+5
–5
–7
13
1.0
+7
–4
–3
16
1.5
+9
–2
–2
dB
Noise figure
NF
dB
Third order input intercept point
IIP3
dBm
dBm
dBm
In-band 1 dB compression point at input
IP1dB
IP1dB
Out-of-band (2.45 GHz injected signal) 1 dB
compression point at input
Input/output return loss
Reverse isolation
Drain current
S
11
, S
22
S
12
Z
S
/
L
= 50
–10
–26
11
–6
–20
15
dB
dB
mA
μ
A
mA
ns
V_ENABLE = 3 V
V_ENABLE = 0 V
V_ENABLE = 3 V
10
0
<1
5
V_ENABLE current
Rise time
I
EN
_
HIGH
t
RISE
2.3
125
60
3.0
155
90
Fall time
t
FALL
ns
Disable Mode
Gain
S
21
–25
–2
–15
0
dB
dB
dB
μ
A
Input return loss
Output return loss
V_ENABLE current
S
11
–1
–12
1.7
S
22
–15
–8
1.9
I
EN
_
LOW
V_ENABLE = 0 V to 0.2 V
Note 1:
Performance is guaranteed only under the conditions listed in this table.
Table 5. Mode Control Logic
V_ENABLE Voltage
(V)
Description
3
LNA is enabled
LNA is disabled
0
Skyworks Solutions, Inc.
• Phone
[781] 376-3000
• Fax
[781] 376-3100
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• November
6, 2015
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DATA SHEET
• SKY65404-31:
5 GHz LNA
Typical Performance Characteristics
(VCC = 3 V, T
A
= +25
C, V_ENABLE = 3 V, Unless Otherwise Noted)
+20
1.4
1.2
1.0
0.8
+15
+10
+5
0
–5
–10
–15
0.
6
|
S
11
|
S
21
|
S
22
|
|
|
0.4
–20
–25
0.2
4.
9
0
5.25
5.40
5.85
–30
4.8
5.0
5.2
5.4
5.
6
5.8
6
.0
Frequency (
G
Hz)
Frequency (
G
Hz)
Figure 4. Noise Figure vs Frequency
Figure 3. S-Parameter Data
0
+12
+10
–1
–2
–3
–4
+8
+
6
+4
+2
0
–5
–
6
–7
–8
–
9
–10
–
6
0
–40
–20
0
+20
+40
+
6
0
+80
+100
4.8
5.0
5.2
5.4
5.
6
5.8
6
.0
Temperature (
o
C
)
Frequency (
G
Hz)
Figure 6. P1dB vs Temperature
Figure 5. IIP3 vs Frequency
20
2.5
2.0
18
1
6
14
12
10
8
1.5
1.0
0.5
0
6
4
2
0
–
6
0
–40
–20
0
+20
+40
+
6
0
+80
+100
–
6
0
–40
–20
0
+20
+40
+
6
0
+80
+100
o
Temperature (
o
C
)
Temperature (
C
)
Figure 8. Noise Figure vs Temperature
Figure 7. Gain vs Temperature
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• Fax
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DATA SHEET
• SKY65404-31:
5 GHz LNA
+10
+
9
+8
+7
+
6
+5
+4
+3
+2
+1
0
–
6
0
–40
–20
0
+20
+40
+
6
0
+80
+100
o
Temperature (
C
)
Figure 9. IIP3 vs Temperature
Package Dimensions
Package and Handling Information
An application schematic diagram for the SKY65404-31 is
shown in Figure 10. The PCB footprint drawing for the
SKY65404-31 is provided in Figure 11. Typical part markings
are shown in Figure 12. The package dimensions are shown in
Figure 13, and the tape and reel dimensions are provided in
Figure 14.
Instructions on the shipping container label regarding exposure
to moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The SKY65404-31 is rated to Moisture Sensitivity Level 1
(MSL1) at 260
C. It can be used for lead or lead-free soldering.
For additional information, refer to the Skyworks Application
Note,
Solder Reflow Information
, document number 200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
L1
R1
100
Ω
0.
6
nH
1
2
6
C
ontrol Input
V
CC
V_ENABLE
V
CC
G
ND
C
2
0.1
μ
F
5
4
G
ND
3
RF Input
RF Output
RF_IN
RF_OUT
C
3
0.5 pF
S1353
Figure 10. SKY65404-31 Schematic Diagram
Skyworks Solutions, Inc.
• Phone
[781] 376-3000
• Fax
[781] 376-3100
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• November
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DATA SHEET
• SKY65404-31:
5 GHz LNA
6
X 0.55
o
6
X 0.35
6
X 0.25
0.15 X 45
0.
6
0
0.50 Pitch
1.20
7X Expo
s
ed
S
older
Area
0.05
0.20
0.35
0.70
S1535
Figure 11. SKY65404-31 PCB Layout Footprint
(Top View)
Pin 1
Indicator
S
kywork
s
Part #
Figure 12. Typical Part Markings
(Top View)
Skyworks Solutions, Inc.
• Phone
[781] 376-3000
• Fax
[781] 376-3100
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DATA SHEET
• SKY65404-31:
5 GHz LNA
0.15 X 45
o
Pin 1 Ind.
C
S
eating Plane
A
0.70 +0.10/–0.15
1.5
0.02 +0.03/–0.02
B
2X 0.05
Pin 1
Indicator
1.5
1.20 +0.10/–0.15
Detail B
Detail
C
0.10
C
2X
3
6
X
0.08
C
Expo
s
ed Pad
0.41/0.50
0.10
0.10
C
2X
C
Top View
S
ide View
Bottom View
6
X 0.20 Min
0.175 0.10
0.5
0.25 +0.05/–0.07
C
5
L
0.10
C
A B
2X R0.05
Detail
C
Detail B
6
Place
s
All measurements are in millimeters.
Dimensioning and tolerancing according to ASME Y14.5M-1994.
Coplanarity applies to the exposed heat sink slug as well as the terminals..
Plating requirement per source control drawing (SCD) 2504.
Dimension applies to metalized terminal and is measured between 0.15 mm and 0.30 mm from terminal tip.
S1350
Figure 13. SKY65404-31 Package Dimensions
Skyworks Solutions, Inc.
• Phone
[781] 376-3000
• Fax
[781] 376-3100
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DATA SHEET
• SKY65404-31:
5 GHz LNA
Pin 1
2.00 0.05
4.00 0.10
ϕ
1.50 0.10
0.20 0.02
(T)
1.75 0.10
o
5
Max
B
A
A
B
0.
69
0.05 (Ko)
ϕ
0.50 0.05
B
o
5
Max
1.78 0.05
(Ao)
A
Notes:
1. Carrier
tape: black conductive polycarbonate or polystyrene.
2. Cover
tape material: transparent conductive PSA.
3. Cover
tape size: 5.4 mm width.
S1382
a
4. All
measurements are in millimeters.
Figure 14. SKY65404-31 Tape and Reel Dimensions
Skyworks Solutions, Inc.
• Phone
[781] 376-3000
• Fax
[781] 376-3100
• sales@skyworksinc.com • www.skyworksinc.com
November 6, 2015
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and Product Information Are Subject To Change Without Notice
• 201512K
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DATA SHEET
• SKY65404-31:
5 GHz LNA
Ordering Information
Model Name
Manufacturing Part Number
SKY65404-31
Evaluation Board Part Number
SKY65404-31 LNA
EN31-D985-001
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Skyworks Solutions, Inc.
• Phone
[781] 376-3000
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[781] 376-3100
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• Products
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• November
6, 2015
9
