Description
The programmable telephone audio processor U3900BM is a linear integrated circuit for use in feature phones, answering machines, fax machines and cordless phones.
Features
- D D D D D D D D D D D Speech circuit with anti-clipping Tone ringer interface with DC/DC converter Speaker amplifier with anti-distortion Power-supply management, regulated, unregulated and a special supply for electret microphone Voice switch CLID + SCWID DTMF generator Switch matrix Line current information Fully programmable Watchdog
Benefits
D Savings of one piezoelectric transducer
D Complete system integration of analog signal processing on one chip D Very few external components D High.
U3900BM_Atmel.pdf
