Nokia NSB-9 Service Manual page 28

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