User Guide

RH-21 Company Confidential
System Module Nokia Customer Care
Page 40  2004 Nokia Corporation. Issue 2 07/2004
DC Characteristics
Power Distribution Diagram
Note: The current values in the figure below are not absolute values and cannot be measured. These
values represent maximum/typical currents drawn by the corresponding RF or SAFARI blocks in use,
and are, therefore, dependent on the phone’s operating mode and state.
Figure 9: RH-21 Frequency Plan
UEM
VR1a
VR1b
VR2
VR3
VR4
VR5
IPA1
VR6
IPA2
VR7
VFLASH1
VREFRF01
SAFARI
UHF phasedet.
2 mA
TXVHF VCO
2 mA
2G TX mixer
40 mA
TX-IF
38/36 mA
VCC_CP
VCC_TXMIX
VCC_TX
1G TX mixer
Pwr Det
62 mA
1 mA
REF_in / REF_out
VCC_REF
0.9 mA
VCTCXO
1 mA
biasing
VCC_RX
RX 1st mixer
VCC_RX
RX-IF
VCC_RX
0.5 mA
6.0 mA
12 mA
LNA / LNA_bias
VCC_LNA
4.3/5.6 mA
PA 800
5 mA
5 mA
PA 1900
5 mA
5 mA
RX 1st mixer
VCC_PLL
UHF PLL
VCC_PLL
LO buff. / 2G TX mix.
VCC_PLL
4.1/4.7 mA
6.7/5.1 mA
6.9/10 mA
2G VCO
10 mA
REF_in + PLLs
VCC_DIGI
0.8 mA
bias reference
VREF
50 uA
VBATT 3.1-5.0 V
2G LNA
630 mA
750 mA
RXVHF PLL
VCC_RX2
TXVHF PLL
VCC_TX2
5.6 mA
4.5 mA