User Guide

CCS Technical Documentation 7 - System Module & UI
Company Confidential NMM-3
Issue 1 (11/2003) Copyright  2003 Nokia Corporation Page 7-27
Company Confidential
RF Regulators
Current Sources
RF Module Description
Introduction
This document describes the RF module of the dual system WCDMA, GSM (EGSM900,
GSM1800) engine for N-MM3. Electrical specifications, functional descriptions and block
diagrams are included. The WCDMA RF is supporting 3GPP rel 99 and GSM RF is support-
ing GPRS and HSCSD classes 1 to 6.
DC characteristics
Regulators
The RF regulators are found in UEME in the baseband section of the phone. There are six
2.78 V regulators VR2-VR7 and two 4.8V regulators VR1A and VR1B. There is also a
1.35V regulator VrefRF01 which is used as the reference voltage for the RF ICs. Regula-
tors EXT.Reg1 and EXT.Reg2 are external to UEME and are used in the WCDMA Tx sec-
tion.
Signal Min Nom Max Output Current
VR1A / VR1B 4.60V 4.75V 4.90V I
max
= 10mA
VR2 2.70V
2.61V
2.78V
2.78V
2.86V
2.95V
I
max
= 100mA
VR3 2.70V 2.78V 2.86V I
max
= 20Ma
VR4 2.70V 2.78V 2.86V I
max
= 50mA
I
sleep
= 0.1mA
VR5 2.70V 2.78V 2.86V I
max
= 50mA
I
sleep
= 0.1mA
VR6 2.70V 2.78V 2.86V I
max
= 50mA
I
sleep
= 0.1mA
VR7 2.70V 2.78V 2.86V I
max
= 45mA
Signal Min Nom Max Note
IPA1 and IPA2 0 – 5mA Programmable, +/-6% V
IPA1
/
V
IPA2
= 0V – 2.7V
IPA3 and IPA4 95µA 100µA 105µA V
IPA3
/ V
IPA4
= 0V – 2.7V
Table 1: Voltage supplies and references
Signal name From To Function
VBAT Battery GSM/WCDMA PA SMPS
& UEME
Battery supplies.
VR1A UEME REX & HELGO VCO control charge pump.
VR1B UEME TEX VCO control charge pump.