STMicroelectronics TEA7091
The TEA7091 is a Telephone set Analog Front End (TAFE) interface intended for use in conjunction with a microcontroller. The concept using TAFE + Microcontroller is called BICHIP approach. In this configuration the TEA7091 provides a worldwide mid-range telephone set with loudhearing on board and melody ringer on loudspeaker.| Part No. | TEA7091 |
|---|---|
| Datasheet | TEA7091 Download |
| Manufacturer |  STMicroelectronics |
| Description | TELEPHONE ANALOG FRONT END |
| Buy | Stock & Price |
FEATURES
: SPEECH DC LINE CURRENT RANGE FROM 6 TO 110mA Tx AND Rx GAIN EXTERNALLY ADJUSTABLE AGC IN Tx AND Rx EXTERNALLY PROGRAMMABLE AGC DISABLEABLE THROUGH MICROCONTROLLER BUS SINGLE/DOUBLE SIDETONE NETWORK SOFTWARE PROGRAMMABLE SOFTCLIPPING ON Tx CHANNEL SQUELCH TO REDUCE Tx NOISE ENVIROMENT AND TO IMPROVE HOWLING IMMUNITY IN LOUDHEARING MODE RECEIVING AMPLIFIER FOR PIEZO OR ELECTRODYNAMIC TRANSDUCERS +6dB MODE ON Rx CHANNEL (SELECTABLE THROUGH MICROCONTROLLER BUS) –6dB MODE ON Tx CHANNEL (SELECTABLE THROUGH MICROCONTROLLER BUS) FREQUENCY GENERATOR FOR WAITING MELODY ERROR BEEP GENERATOR HOLD LINE CURRENT DETECTOR FOR TRANSFER/ AUTO RELEASE GROUP LISTENING / ON-HOOK DIALING ANTI HOWLING WITH ACOUSTIC FEEDBACK SYSTEM COUPLED WITH SQUELCH DIGITAL VOLUME CONTROL (8 STEPS OF 4dB EACH) THROUGH MICROCONTROLLER BUS ANTILARSEN ATTENUATION (4 DIFFERENT LEVELS) PROGRAMMABLE THROUGH MICROCONTROLLER BUS HANDSFREE INTERFACE PIN AND SOFTWARE FACILITY FOR EASY INTERCONNECTION WITH HANDSFREE CONTROLLER IC.
