User Guide

NHM-8NX
System Module & UI PAMS Technical Documentation
Page 70 ãNokia Corporation Issue 1 05/02
Figure 25: Power distribution diagram
Idle 1.2 mA
RX 84 mA,
peak
TX, without PA 141 mA,
peak
Including TX buffer & RX/TX
switch
TX, power level 5, E-
GSM
1700 mA,
peak
Efficiency 48% (at max power
– 1 dB)
TX, power level 0,
GSM1800
1220 mA,
peak
Efficiency 40% (at max power
– 1 dB)
VR2
TX modulator
Modulator loading
network
VR3
Digital control logic
VCXO Power Supply
VIO
Baseband clk buffer
Digital com. interface
VR5
Dividers & LO buffer
PLL charge pump
PLL Pres-scaler
PLL counters
VR6
LNA and Pre-gain
VR7
VCO
2.78 V +/- 3 %
@ 45 mA
2.78 V +/- 3 %
@ 50 mA
2.78 V +/- 3 %
@ 20 mA
2.78 V +/- 3%
@ 100 mA
Ref. volt for Mjoelner
Dual Band PA
VrefRF01
Vbat
UEM
Power Loop Amp
BB Section
1.8 V +/- 4.5 %
@ 150 mA
Internal Mjoelner
VCO module
2.78 V +/- 3%
@ 50 mA
1.35 v +/- 2%
< 100uA
VR1a
4.75 +/- 3%
@ 10 mA