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56
GSM
DCS
TX
RX
TX
RX
Part
Freq
Ins. Loss
Att. (2*f0, 3*f0)
Freq.
Ins. Loss
Freq.
Ins. Loss
Att. (2*f0, 3*f0)
Freq.
Ins. Loss
Number
(MHz)
(dB)
(MHz)
(dB)
(MHz)
(dB)
(MHz)
(dB)
LM-D218S2-2
880 to 915
≤1.2
≥30
925 to 960
≤1.3
1710 to 1785
≤1.5
≥25
1805 to 1880
≤1.3
SPECIFICATIONS
KC D2S2
0005
5
6
12
4
3
12
7
8
9
11
10
5.0
(0.197)
6.7 (0.264)
1.8 (0.071)MAX.
DIMENSIONS
millimeters (inches)
Antenna Switch Module
LM-D218 Series - Dual Band
FEATURES
Built-in ESD protection circuit (Option)
Built-in 2LPF for receiver
Small and low profile
APPLICATIONS
GSM/DCS, GSM/PCS
Custom Specification
ESD Function
E = Yes,
= No
Custom Specification
Height
18 = 1.8mm max.
Type
Circuit
D= Dual
Series
HOW TO ORDER
LM - D
2 18 S
E
PIN CONFIGURATION
TX-GSM RX-DCS
Cont-1
Cont-3(NC)
GND
ANT
Cont-2(NC) Cont-4
RX(GSM)
TX-DCS
GND
GND
11
12
7.0
(0.276)
3.0 (0.118)
4.0
(0.157)
1.5 (0.059)
7.3 (0.287)
5.3 (0.209)
1.0
(0.039)
1.27
(0.050)
0.8 (0.031)
RECOMMENDED LAND PATTERN
RECOMMENDED REFLOW PROFILE
millimeters (inches)
Peak:225-235
°C
15sec max
200
°C
over
40sec max
120sec
60sec
250
200
150
100
50
temp.
time
(sec.)
(
°C)
140-160
°C
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