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A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03
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
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