Rf Power Supply Configuration - Nokia 616 Service Manual

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RF Power Supply Configuration

All power supplies for the RF Unit are generated in the UEM IC (D200). All RF supplies
can be checked either in Mjoelner can or in BB can. The power supply configuration used
is shown in the block diagram below. Values of voltages are given as nominal outputs of
UEM. Currents are typical values.
VR1A
VR2
VR3
UEM
VR4
VR5
VR6
VR7
VIO
VREF01
VBAT
Issue 2.0 Mar/2005
Company Confidential
4.75 V 3.2 %
0.45 mA
2.78 V 3 %
85 mA
2.78 V 3 %
4.4 mA
2.78 V 3 %
14 mA (Tx900), 28 (Rx)
2.78 V 3 %
41 mA
2.78 V 3 %
11 mA
2.78 V 3 %
14 mA
1.8 V 4.5 %
0.02 mA
1.35 V 2 %
100 uA
3.6 V
Figure 33: RF Power distribution diagram
Copyright © 2005 Nokia Corporation.
Company Confidential
TF4 Technical Information
charge pump (VDDCP)
Tx modulator (VDDTX)
Dig. control (VDDDIG)
Ant. switch control lines
VCXO (VDDXO)
BB buffer (VDDBBB)
BT buffer
Rx BB section (VDDRXBB)
Tx buffer
PLL prescaler (VDDPRE)
dividers, LO buffers (VDDLO)
PLL counters (VDDPLL)
Rx front end (VDDRXF)
external VCO
13/26 MHz (SELADDR)
dig. interface (VDDDL)
bias reference (VBEXT)
Triple band PA, Bluetooth
TFE-4/RV-1
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