MC34018
VOICE SWITCHED SPEAKER-PHONE CIRCUIT
FEATURES
Chip Select pin for Power conservation (active/standby mode).
Integrated all necessary active circuitry for a hand-free telephone
into one single chip.
Operating under wide dynamic range through signal compression
technology.
Build-In voltage regulators illuminate external regulators for lining
operation.
Monitoring system for background noise level.
Background sound level compensation for transmit and
receive levels as well as the background level.
Power audio amplifier for typical 100mW output (into 25Ω) with
peak limiting for speaker to minimize distortion.
Volume control function for external volume control circuit
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