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TEA7540

ST Microelectronics
Part Number TEA7540
Manufacturer ST Microelectronics
Description HANDSFREE CONTROLLER
Published Apr 16, 2005
Detailed Description ® TEA7540 HANDSFREE CONTROLLER NOISE/SPEECH DISCRIMINATION IN EMISSION AND RECEPTION INTEGRATED SIGNAL GAIN COMPRESSOR...
Datasheet PDF File TEA7540 PDF File

TEA7540
TEA7540

Overview
® TEA7540 HANDSFREE CONTROLLER NOISE/SPEECH DISCRIMINATION IN EMISSION AND RECEPTION INTEGRATED SIGNAL GAIN COMPRESSOR IN BOTH MODES PROGRAMMABLE ATTENUATORS IN BOTH MODES ADAPTED TO ACOUSTIC PARAMETERS OF ALL CABINETS LOW OPERATING VOLTAGE 2.
5V LOW OPERATING CURRENT 2.
1mA CHIP SELECT BETWEEN HANDSFREE AND MONITORING MODES SO28 ORDERING NUMBERS: TEA7540FP DESCRIPTION This 28 pins IC is an innovative approach to quality handsfree telephone sets.
It results from an extensive research on speech signal.
PIN CONNECTION (top view) GND CS OUTE ATTE HYST1 HYST2 TIM CCE CE3 CE2 CE1 MICOUT INE VREF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D93TL005 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V+ IREF OUTR ATTR ATR VOL AMP SUP AMP IN CCR CR3 CR2 CR1 RECOUT INR July 1998 T 1/12 is advanced information on a new product now in development or undergoing evaluation.
Details are subject to change without TEA7540 BLOCK DIAGRAM 2/12 TEA7540 PIN FUNCTION N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1...


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