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The EGAIM part contains the interface between the digital and the analogue signal
processing:
• 2 Sigma Delta A/D converters for RX signal, and for the necessary signals for the
charge control and temperature measurement. For this, the converter inputs are
switched over to the various signals via the multiplexer.
• 2 D/A converters for the GMSK-modulated TX signal,
• 1 D/A converter for the Power Ramping Signal,
• 1 Sigma Delta A/D and D/A converter for the linguistic signal.
Blockdiagram EGAIM inside the EGOLD
V1.20
A55/C55_Hitachi
Page 22 of 48
Company Confidential © Copyright Siemens AG
ICM MP CCQ GRM
04/03
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