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11.2. RF Band
VC1 VC2 VC3 LF U101 Transceiver
Voltage Regulator
VCO Control
CLG Adjust
VCO Bias FL203 PCS 1900
Timing & Measurement
Fast RFD
Fast CP
FL202 DCS 1800 MMD GSM 850 or EGSM 900 FL201 Frac CW 1/2 SigmaDelta MASH Modulator RX/TX Cntrl U103 Antenna Switch Module U401 TCXO 1/4 Gauss Filter Module Fif0 AFC BUFEN BUFOUT DAO Int CW &Cntrl 3-Wire Bus EN DA CLK
IDA (I/Q to Digital Adapter)
TX Bias DCS 1800 & PCS 1900 GSM 850 or EGSM 900 U102 PA Module U105 ATTN Balun
1/2
1/4
BSW Driver
B BX Balun A AX
HBT
Power controller
BAND_SEL
U106 ATTN TXON_PA VBATT PALEVEL
� 11-2 �
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