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V 1.0 Page 24of 52 ICM MP CCQ GRM
SL55
Company Confidential © Copyright Siemens AG
06/03
Generation of the PA Control Signal (PA_RAMP)
The RF output power amplifier needs an analogue ramp up/down control voltage. For this
the EGOLD+ system interface generates 10 bit digital values which have to be transferred
to the power ramping path. After loading into an 10 bit latch the signal will be converted
into the corresponding analogue voltage (PA_RAMP) with a maximum of ~2V
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