User Guide

NSB-9
System Module and User Interface CCS Technical Documentation
Page 14 Nokia Corporation Issue 1 04/03
Table 7: AC and DC Characteristics of RF-Baseband Voltage Supplies
Signal
name
From To Parameter Min Typ Max Unit Function
VBAT Battery PA, UEM,
STEREO
AMPLI-
FIER, FLIP
Voltage 2.95 3.6 4.2 V Battery supply.
Current 3 A
Current drawn
by PA when
”off”
0.8 2 uA
VR1A UEM VCP Voltage 4.6 4.75 4.9 V Supply for varactor for
UHF VCO tuning.
Current 2 10 mA
VR2 UEM VRF_TX Voltage 2.70 2.78 2.86 V Supply for part of
transmit strip. Supply
for TX I/Q-modulators.
Current 65 100 mA
VR3 UEM VCTCXO Voltage 2.70 2.78 2.86 V Supply for VCTCXO
Current 1 20 mA
VR4 UEM VRF_RX Voltage 2.70 2.78 2.86 V Supply for Hagar RX;
preamp., mixer,DTOS
Noise density decades
20dB/dec from 6Hz to
600Hz. From f >600Hz
maximum noise den-
sity 55nV
RMS
/ÖHz.
Current 50 mA
VR5 UEM VDIG,
VPRE,
VLO
Voltage 2.70 2.78 2.86 V Supply for Hagar PLL;
dividers, LO-buffers,
prescaler.
Current 50 mA
VR6 UEM VBB Voltage 2.70 2.78 2.86 V Supply for Hagar BB
and LNA
Current 50 mA
VR7 UEM UHF VCO Voltage 2.70 2.78 2.86 V Supply for UHF VCO
Current 30 mA