TEA7532 - MONITOR AMPLIFIER

ST Microelectronics

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Datasheet Details

Part number	TEA7532
Manufacturer	STMicroelectronics
File Size	201.93 KB
Description	MONITOR AMPLIFIER
Datasheet	TEA7532_STMicroelectronics.pdf

TEA7532 Product details

Description

This 16 pins IC is designed for monitor (loudspeaker) telephone set and provides : a) Signal amplification for monitoring (loudspeaker) b) Antiacoustic feedback (antilarsen) c) Antidistortion by automatic gain adaptation d) Antilarsen adjustment (full duplex) BLOCK DIAGRAM DIP16 SO16 ORDERING NUMBERS : TEA7532DP (DIP16) TEA7532FP (SO16) July 1993 1/16 TEA7532 PIN CONNECTION (Top view) PIN DESCRIPTION N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol ADJ ALADJ ADS VLS MIC1 MIC2 FAL TC1 INP

Features

of each exist in different frequency bands. To extract the larsen component, the microphone signal is first filtered by a second order filter (formed Figure 16. by two first order filters), then amplified and rectified in order to produce the AGC control signal. Zin : 4 kΩ A= V7 V5.
V6 = 15 The first filter is generated by the capacitors on pins 5 and 6 ; the second filter by the R-C network on pin 7. 8/16 TEA7532 Figure 17 : Antilarsen System Filter Response. Filter on pins 5 &.

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Published: Apr 16, 2005 |