PANASONIC EB-VS3
Circuit Diagrams

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

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