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參數(shù)資料
| 型號： | TO353 |
| 廠商： | Atmel Corp. |
| 英文描述： | 2.8 V Tri-band/ Quad-mode RF Receiver for CDMA/AMPS/ GPS |
| 中文描述： | 2.8 V三頻/四模式射頻接收器的CDMA / AMPS二元/全球定位系統(tǒng) |
| 文件頁數(shù)： | 3/11頁 |
| 文件大小： | 126K |
| 代理商： | TO353 |
3
T0353
4559AS–CDMA–10/02
Pin Configuration
Figure 2.
Pinning
PLNA_GND
PLNA_IN
VCC_LNA
Gain
CLNA_OUT
CLNA_GND
CLNA_IN
GPS_LNA_IN
CDMA_OUT+
CDMA_OUT-
VCC_MIX
AMPS_OUT+
AMPS_OUT-
GPSMix_OUT+
GPSMix_OUT-
VCC_LO_TX
I
P
L
B
V
P
C
B
I
G
P
G
L
P
C
G
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
Pin Description
Pin
Symbol
Function
PCS LNA emitter-ground. The LNA emitter ground should be grounded immediately to the ground-
plane to reduce stray inductance and capacitance that may affect performance.
PCS LNA input. Requires a DC blocking capacitor and an L-C (shunt C/series L) matching network
for optimum gain, intercept and noise performance.
Power supply pin for PCS and Cell LNAs. Bypass with a capacitor as close to the pin as possible.
Gain select logic input for cellular band. Logic high selects High Gain.
Cell LNA output. Requires a pull-up inductor to V
CC
and a series DC blocking capacitor, which can
be used as part of the output matching network.
Cell LNA emitter-ground. The LNA emitter ground should be grounded immediately to the ground-
plane to reduce stray inductance and capacitance that may affect performance.
Cell LNA input. Requires a DC blocking capacitor and an L-C (shunt C/series L) matching network
for optimum gain, intercept and noise performance.
GPS LNA input. Requires a DC blocking capacitor and an L-C (shunt C/series L) matching network
for optimum gain, intercept and noise performance.
Bias resistor for Cell LNA. For typical bias use a 390
current for HGHL mode.
GPS LNA output
.
PCS and Cell band LO input.
GPS LO input.
LO divider-select input. Low disables divider. High selects divider in cellular and AMPS modes.
PCS LO buffer output. Internally matched to 100
1
PLNA_GND
2
PLNA_IN
3
4
Vcc_LNA
Gain
5
CLNA_OUT
6
CLNA_GND
7
CLNA_IN
8
GPS_LNA_IN
9
Iset_CELL
resistor to ground which sets the bias
10
11
12
13
14
GPS_LNA_OUT
P_CLO_IN
GLO_IN
LO / 2
PLO_OUT
. Does not require a blocking capacitor.
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