User Guide

CC Technical Documentation System Module
NPM-10 (3595)
Issue 2 03/2004 ©2004 Nokia Corporation Confidential Page 39
Use of the regulators can be seen in the power distribution diagram. VrefRF01 is used as
the reference voltages for the RX ADCs reference in Mjoelner.
The regulators are connected to Mjoelner, either directly or through output loading
networks. The individual regulator can be switched on/off through the serial data bus in
order to reduce the power consumption.
Table 30 lists the needed supply voltages.
Typical Current Consumption
The table shows the typical current consumption in different operational modes.
Table 30: Needed Supply Voltages
Voltage Source Load
VR1a Mjoelner, charge pump
VR2 Mjoelner, VTX (TX modulator)
VR3 Mjoelner, VXO (VCXO - digital logic)
VR4 Not used
VR5 Mjoelner, VPLL (Dividers - lo_buffers - PLL_charge - PLL_prescaler-PLL_counters)
VR6 Mjoelner, VRX (Front_end LNA- Pre_gain - BB section)
VR7 VCO module
VrefRF01 Mjoelner, VREF1 (ref. Voltage)
VrefRF02 Not used
Vbatt PA
Table 31: Current Consumption Information
Operation Mode Current Consumption Notes
Power Off < 10 uA Leakage current (dual band PA)
Idle 1.2 mA
RX 87.2 mA, peak
TX, without PA 121 mA, peak Not including TX buffer (max 10 mA)
TX, power level 5, GSM850 1700 mA, peak Efficiency 48% (at max power – 1 dB)
TX, power level 0, GSM1900 1220 mA, peak Efficiency 40% (at max power – 1 dB)