ROFS-RSFD1954C
| Part # | ROFS-RSFD1954C |
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RSFD1954C
Band1 Duplexer
Description
RSFD1954C is a high performance duplexer
designed for applications in
L
T
E Band1
(1920~1980 MHz TX, 2110~2170 MHz RX).
RSFD1954C uses chip scale packaging (CSP)
technology to assembly the filters into a molded
chip-on-board module with the footprint of 1.8mm
x 1.4mm and height of 0.65mm.
8 Pin 1.8 x 1.4 x 0.65mm Package
Features
Functional Block Diagram
（
Top Thru
View
）
Miniature Size
1.8 mm
x 1.4 mm x 0.65 mm
Insertion Loss:
o
o
Tx 2.0 dB Typ.
Rx 2.3 dB Typ.
Tx-RX Isolation:
o
o
Tx Pass Band 55 dB Typ.
Rx Pass Band 49 dB Typ.
Tx Input Power
o
+29dBm in LTE modulation
Moisture Sensitivity:
MSL3
Storage Temperature
：
-40 to +85
℃
Reference Des.
Value
50ohm
50ohm
50ohm
2.4 nH
10 nH
Description
Environmental
R1
R2
R3
L1
L2
L3
Full implement with RoHS compliant
Lead Free (Pb free)
Recommended Inductor
Recommended Inductor
Recommended Inductor
1.0 nH
Pin Connection
No.
Function
1
Rx
Tx
3
6
Ant
2,4,5,7,8
Ground
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RSFD1954C Data sheet RevA, JUN 2022
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RSFD1954C
Band1 Duplexer
Electrical Specification
Transmit Port to Antenna Port
Min
(2)
Typ
(1)
2.0
Max
(2)
2.5
Unit
dB
dB
/
Parameter
(Operation Temperature:
-20~85
℃
)
Insertion Loss
(1920~1980MHz)
Ripple
(1920~1980MHz)
VSWR
(1920~1980MHz,
ANT Port
)
VSWR
(1920~1980MHz,
TX Port
)
Absolute Attenuation
(DC~1565MHz)
/
/
/
/
0.8
1.2
1.6
2.2
1.5
2.0
/
36
36
28
25
44
42
38
26
18
32
32
20
18
40
5
30
18
10
/
/
/
/
/
/
/
/
/
dB
dB
dB
dB
dB
dB
dB
dB
dB
(1565 ~1606MHz)
(1805~1865MHz)
(1865~1880MHz)
(2110~2170MHz)
(2400~2500MHz)
(2620~2690MHz)
(3840~3960MHz,
2f
0
)
(4900~5950MHz)
Antenna P
rt to Receive Port
Min
(2)
Typ
(1)
2.3
Max
(2)
2.8
Unit
dB
dB
/
Parameter
(Operation Temperature:
-20~85
℃
)
Insertion Loss
(2110~2170MHz)
Ripple
(2110~2170MHz)
VSWR
(2110~2170MHz,ANT Port)
VSWR
(2110~2170MHz,RX Port)
Absolute Attenuation
(DC~1463MHz)
/
/
/
/
1.2
0.8
2.3
1.8
2.3
/
1.9
32
37
48
38
38
45
42
25
42
43
53
45
45
50
52
43
/
/
/
/
/
/
/
/
dB
dB
dB
dB
dB
dB
dB
dB
(1710~1785MHz)
(1920~1980MHz)
(2400~2500MHz)
(2500~2570MHz)
(4030~4150MHz)
(4220~4340MHz,
2f0
)
(4900~5950MHz)
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RSFD1954C Data sheet RevA, JUN 2022
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RSFD1954C
Band1 Duplexer
Transmit Port to Receive Port
Parameter
(Operation Temperature:
-20~85
℃
)
Isolation
Min
(2)
Typ
(1)
Max
(2)
Unit
1920~1980MHz
50
46
55
49
/
/
dB
dB
2110~2170MHz
(1) Reference value within band at +25
℃
(2) Max/Min value within band at -20 ~ +85
℃
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RSFD1954C Data sheet RevA, JUN 2022
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RSFD1954C
Band1 Duplexer
Typical Performance at Tc=25
℃
Figure1. TX-ANT Passband
Figure2. ANT-RX Passband
Figure3. TX-ANT Wideband
Figure4. ANT-RX Wideband
Figure5.
TX-ANT
/
ANT-RX
Figure6. TX – RX Isolation
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RSFD1954C Data sheet RevA, JUN 2022
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RSFD1954C
Band1 Duplexer
Typical Performance at Tc=25
℃
Figure7.
TX
/ANT Port VSWR
Figure8.
RX
/ANT Port VSWR
Figure10.
RX
/ANT Smith Chart
Figure9.
TX
/ANT Smith Chart
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RSFD1954C Data sheet RevA, JUN 2022
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RSFD1954C
Band1 Duplexer
Package Outline
Note:
1.
2.
3.
4.
5.
Dimension: mm
Dimensions nominal unless otherwise noted
Contact area are gold plated
Pad(1)(2) is single size, others are same size
XXXX is product code, AA is date code
No.
Function
Rx
1
3
6
Tx
Ant
2,4,5,7,8
Ground
Order Information
P/N
Qty./Reel
4000
Container
7 inch Reel
RSFD1954C
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RSFD1954C
Band1 Duplexer
Packing
1. Tape
Dimension
2. Reel
Dimension
4000Pcs/Reel
Trailer tape
160-190
mponents
80-120
Leader Cavity
400-560
Unit:mm
2.0±0.5
9.0±0.5
13.5max
13.0±0.5
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RSFD1954C Data sheet RevA, JUN 2022
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RSFD1954C
Band1 Duplexer
Recommended Reflow Profile
Notes:
The specification may be changed or the product had been discontinued, please check with our
sales or product engineer before orde
r
.
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RSFD1954C Data sheet RevA, JUN 2022
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