User Guide

NHM–7
System Module & UI
PAMS Technical Documentation
Page 13
Issue 1 10/2001
 Nokia Corporation
AC and DC Characteristics of RF–BB voltage supplies
Signal
name
From To Parameter Min Typ Max Unit Function
VBAT Battery PA & UEM
Voltage 2.95 3.6 4.2 V
Battery supply.
Cut–off level of
DCT4 regulators is
Current 2000 mA
DCT4
regulators
is
3.04V. Losses in
pcb tracks and
ferrites are taken
Current drawn by
PA when ”off”
0.8 2 uA
f
err
it
es are
t
a
k
en
account to minimum
battery voltage
level.
VR1A UEM VCP
Voltage 4.6 4.75 4.9 V
Supply for varactor
f UHF VCO
Current
2
10
mA
f
or UHF V
CO
Current
2
10
mA
tu
nin
g
.
Noise density 240 nVrms/
sqrt(Hz)
tuning
.
VR2 UEM VRF_TX
Voltage 2.70 2.78 2.86 V
Supply for part of
titti
Current 65 100 mA
transmit strip.
Su
ppl
y
f
o
r TX
Noise density
f=100Hz
f>300Hz
120 nVrms/
sqrt(Hz)
Su ly
for
TX
I/Q–modulators.
VR3 UEM VCTCXO
Voltage 2.70 2.78 2.86 V
Supply for VCTCXO
Current 1 20 mA
Noise density 240 nVrms/
sqrt(Hz)
VR4 UEM VRF_RX
Voltage 2.70 2.78 2.86 V
Supply for Hagar
RX; preamp., mixer,
Current 50 mA
DTOS
Noise density
d d 20dB/d
Noise density
f = 6 Hz
f = 60 Hz
f  600Hz
5500
550
55
nVrms/
sqrt(Hz)
decades 20dB/dec
from 6Hz to 600Hz.
From f >600Hz
maximum noise
density
55nV
RMS
/√Hz.
VR5 UEM VDIG,
VPRE
Voltage 2.70 2.78 2.86 V
Supply for Hagar
PLL di id LO
VPRE,
VL
O
Current 50 mA
PLL; dividers, L
O
–
bu
ff
e
r
s,
pr
esca
l
e
r
,
VLO
Noise density
BW=100Hz...
100kHZ
240 nVrms/
sqrt(Hz)
buffers
,
rescaler
,
VR6 UEM VBB
Voltage 2.70 2.78 2.86 V
Supply for Hagar
BB d LNA
Current 50 mA
BB and LNA
Noise density
BW=100Hz...
100kHz
240 nVrms/
sqrt(Hz)