TEA7088A

TEA7088A LOW-RANGE PHONE DEDICATED CHIP . . . . . . . RING - GENERATION OF 8 MELODY TONES (Including the 3 German Melody Tones) - 4 STEPS DIGITAL CONTROL ON THE AMPLIFIER OUTPUT LEVEL SPEECH - TRANSMIT GAINEXTERNALLY ADJUSTABLE - RECEIVINGGAINEXTERNALLYADJUSTABLE - AGCSLOPEEXTERNALLYPROGRAMMABLE - SOFTCLIPPING ON SENDING CHANNEL - RECEIVE AMPLIFIER FOR PIEZO OR ELECTRODYNAMIC TRANSDUCER - +6dB MODE ON RECEIVE CHANNEL - LINE POWER MANAGEMENT DIALING - DTMF GENERATOR - LOW DC MASK DURING MAKE PERIOD THROUGH MICROCONTROLLER SERIAL BUS INTERFACE MICROCONTROLLER INTERFACE - 1.79MHz CLOCK OR 3.58MHz OSCILLATOR INPUT MICROCONTROLLER POWER SUPPLY MICROCONTROLLER CONTROL INTERFACE INCLUDING SERIAL BUS LINE CURRENT EXTRACTOR FOR SUPPLY OF EXTERNAL PERIPHERALS SO28 (Plastic Package) ORDER CODE : TEA7088AFP PIN CONNECTIONS S OFT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 DTMF RECIN SN AGC MIC1 MIC2 VREF VRMC DCL DATA MSK OSC RI P ON GTR DESCRIPTION The TEA7088A is a Telephone Analog Front End device, TAFE, which integrates the three basic functions of a standard telephone set : - Speech network, - DTMF generator, - Ringer generator on buzzer. A complete telephone set can be designed using TEA7088A associated with a low cost microcontroller. January 1998 VCC GND IVLS VS RES VRING BUZ 7088A-01.EPS VL VMC GREC EAR+ EAR- 1/17 TEA7088A SPEECH The speech network includes : - a low noise transmit channel suitable for any kind of microphone trans...