User Guide

NMM-3 Company Confidential
7 - System Module & UI CCS Technical Documentation
Page 7-28 Copyright  2003 Nokia Corporation Issue 1 (11/2003)
Company Confidential
Figure 1: Voltage supplies for RF
VR2 UEME TEX, HELGO WCDMA: TEX supply voltage
GSM: VRF_TX.
VR3 UEME VCTCXO, HELGO VCTCXO.
GSM: VDIG. RFCLK buffer
VR4 UEME REX, HELGO WCDMA: REX LNA, demod, biasing, local buffer.
GSM: VRF_RX, VF_RX, VBB
VR5 UEME REX, HELGO WCDMA: REX BB gain, filter, AGC, VLO, synthe-
sizer.
GSM: VLO, VPRE
VR6 UEME RX VCO WCDMA: RX VCO
VR7 UEME GSM VCO GSM: VCO
VrefRF01 UEME REX, HELGO, TEX, HEX Voltage Reference for RF ICs 1.15% accuracy.
EXT. Reg 1
1
st
discrete
TX VCO WCDMA: TX VCO
EXT. Reg 2
2
nd
discrete
WCDMA TX WCDMA: Supply voltage for HEX, PA Vreg, power
detector
Table 1: Voltage supplies and references
Signal name From To Function
TEX
REX
HELGO
UEME
VR1A
VR1B
VR2
VR3
VR4
VR5
VR6
VR7
VrefRF
01
VCTCXO
HEX
GSM VCO
WCDMA
RX VCO
VBAT
GSM PA
WCDMA PA
HEX
WCDMA pwr
det
WCDMA TX
VCO
EXT REG 2
EXT REG 1
PA
SMPS
WCDMA PA