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Número de pieza
componentes Descripción
RF9957PCBA Ver la hoja de datos (PDF) - RF Micro Devices
Número de pieza
componentes Descripción
Fabricante
RF9957PCBA
CDMA/FM RECEIVE AGC AND DEMODULATOR
RF Micro Devices
RF9957PCBA Datasheet PDF : 10 Pages
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RF9957
Pin Function Description
Interface Schematic
24
PD
Power Down Control. When logic “high” (
≥
V
CC
-0.3V), all circuits are
operating; when logic “low” (
≤
0.5V), all circuits are turned off. The input
impedance of this pin is 10k
Ω
.
10 k
Ω
PD
Pin Out
VCC1 1
24 PD
VCC2 2
23 GC
VCC3 3
22 I OUT-
CDMA IN+ 4
21 I OUT+
CDMA IN- 5
20 GND
GND 6
19 FL+
7
GND 7
18 FL-
FM IN+ 8
17 GND
FM IN- 9
16 Q OUT+
BG OUT 10
15 Q OUT-
DEC 11
14 IN SEL
LO- 12
13 LO+
Rev C11 010622
7-31
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