The TEA7089A 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 TEA7089A associated with a low cost microcontroller.
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TEA7089A
LOW-RANGE PHONE DEDICATED CHIP
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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.
TEA7089A Datasheet
