TEMIC Semiconductors U4050B
U4050B is a linear integrated circuit for use in telephone sets. It replaces the hybrid transformer, sidetone equivalent and ear protection rectifiers. The circuit is line powered and contains all components necessary for amplification of signals and adaptation to the line.| Part No. | U4050B |
|---|---|
| Datasheet | U4050B Download |
| Manufacturer |  TEMIC Semiconductors |
| Description | Speech Circuit |
| Buy | Stock & Price |
DESCRIPTION
The electronic speech circuit An integrated loudspeaker amplifier allows loudhearing operation.FEATURES
D Integrated amplifier for loudhearing operation D Anticlipping for loudspeaker amplifier D Supply voltages for all functional blocks of a subscriber set D Adjustable DC characteristics D Adjustable sending and receiving amplification D Automatic line loss compensation D Symmetrical output of earpiece amplifier D Built-in ear protection D Symmetrical input of microphone amplifier D Adjustable sidetone suppression independent of sending and receiving amplification D DTMF and MUTE inputs D Anticlipping in transmit direction D Squelch D Integrated transistor for short circuiting the line voltage D Power down D Operation possible at line currents above 10 mA Benefits D Independent adjustment of transmit gain, receive gain and sidetone suppression D Low number of external components Block Diagram GS 9 MICO 7 TIN 15 ST 4 + GR 2 – + RECO1 3 RECO2 1 DTMF MIC1 MIC2 8 – 10 11 + – SAI 26 GSA SAO CLISA AGA CK VL RDC VC SA 21 LIMSA LEVSQ CSQ 12 13 17 27 6 SQUELCH TXA AGA REC.
