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CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
0.033μF
10kΩ
47pF
3300pF
0.01μF
10kΩ
17pF
10kΩ
5pF
68nH
18pF
DISCRIMINATOR
455kHz
VCC
47pF
LIMITER
I
FM
10kΩ
BYP
BYP
CP_OUT
GND
DIVSEL
TANKL+
BYP
STBY
CDMA+
MAX2316
TANKL- CDMA-
BUFEN
VGC
LOOUT
VCC
GND
REF
SHDN
VCC
DATA
EN
CLK
IOUT+
QOUT+
IOUT-
QOUT-
LOCK
0.01μF
VCC
0.01μF
VCC
680Ω
47pF
3-WIRE
10kΩ
47kΩ
VCC
Figure 2b. MAX2316 Typical Operating Circuit
CDMA
DAC
VCC
Q
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