Speech Circuit with Line-Powered Loudspeaker Amplifier
- Integrated amplifier for loudhearing operation
- Anticlipping for loudspeaker amplifier
- Supply voltages for all functional blocks of a subscriber set
- Adjustable dc characteristics
- Adjustable sending and receiving amplification
- Automatic line loss compensation
- Symmetrical output of earpiece amplifier
- Built in ear protection
- Symmetrical input of microphone amplifier
- Adjustable side tone suppression independent of sending and receiving amplification
- DTMF and MUTE inputs
data sheet:
U4050B.pdf
