Siemens S55 Repair Documentation page 24

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
V1.00
S55/S57
Page 24 of 49
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