Speech/listening-in
Description
INTEGRATED CIRCUITS
DATA SHEET
TEA1096; TEA1096A Speech and listening-in IC
Product Specification File under Integrated Circuits, IC03 November 1994
Philips Semiconductors
Philips Semiconductors
Product Specification
Speech and listening-in IC
FEATURES • Line Interface with: – active set impedance (adjustable) – voltage regulator with adjustable DC voltage – low voltage circuit for parallel operation • Interface to peripheral circuits with: – supply VDD for microcontroller – stabilized supply voltage (VBB) which is: available for peripheral circuits adjustable (TEA1096 only) – Dual-Tone MultiFrequency (DTMF) signal input – power-down function for pulse dialling/flash – mute function to disable speech during dialling • Microphone amplifier with: – symmetrical high impedance inputs – externally adjustable gain – AGC; line-loss compensation – dynamic limiter – microphone mute function • Receiving amplifier with: – externally adjustable gain – confidence tone during dialling – double anti-sidetone circuit for long and short lines – AGC; line-loss compensation – earpiece protection by soft clipping.
• Listening-in circuit with: – loudspeaker amplifier – dynamic limiter to prevent distortion at any supply condition – volume control via a potentiometer – fixed gain of 35.
5 dB – disable function – gain control input (TEA1096A only).
ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TEA1096 TEA1096A TEA1096T TEA1096AT November 1994 DIP28 DIP28 SO28 SO28 DESCRIPTION APPLICATIONS
TEA1096; TEA1096A
• Line-powered telephone sets with listening-in/line monitoring function.
DIFFERENCES BETWEEN TEA1096 AND TEA1096A The TEA1096 offers via input VBA an adjustable stabilized supply voltage VBB, whereas the TEA1096A offers a fixed stabilized voltage VBB.
The TEA1096A offers a DC gain control input VCI to set the loudspeaker volume, whereas the TEA1096 offers volume control via a potentiometer.
GENERAL DESCRIPTION The TEA1096 and TEA1096A are bipolar ICs intended for use in line power...
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