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4.1 Power Supply RF-Part

A directly to
Batt+
connected voltage regulator, with a nominal output voltage
of 2.8V is used, to perform the required "RF-Voltages" named
VCC2_8
and
VCC_SYN.
The voltage regulator is activated as well as deactivated via
SLEEPQ
and
VCXOEN
provided by the
EGOLD+
The temporary deactivation is used to extend the stand by time.
Blockdiagram
PIN-OUT
V1.0
Page 7 of 46
ICM MP CCQ ST
C45, M50 AND MT50
Company Confidential © Copyright Siemens AG
05/02

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