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Microphone
Two Microphones can be connected to the EGOLD+ (external/internal) with the
lines
HF_MICRO
and MICP. Both Microphones are supplied with VMIC from the
EGOLD+
To avoid LF distortions, VMIC is low pass filtered R173,
(Voiceband E1).
and grounded
(R170-1,
The internal Microphone is connected to XG170. The capacitors C177,C179 are used
to suppress HF distortions.
The input ports a the EGOLD+ are protected versus DC voltages with the capacitors
C115-C118.
An EMC protection is realised by
V1.0
A35-A36-A40
R176).
C132,C129.
Voiceband part inside
the EGOLD+
Page 34 of 38
Company Confidential
Notes
C175
ICM MP CC ST
09/01
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