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TEA7540 Fiches technique(PDF) 1 Page - STMicroelectronics |
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TEA7540 Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 12 page TEA7540 HANDSFREE CONTROLLER NOISE/SPEECH DISCRIMINATION IN EMIS- SION 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 DESCRIPTION This 28 pins IC is an innovative approach to quality handsfree telephone sets. It results from an extensive research on speech signal. July 1998 T is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without ® HYST2 TIM CCE CE3 CE2 MICOUT CE1 INE VREF 1 3 2 4 5 6 7 8 9 INR RECOUT CR1 CR3 CR2 CCR AMP IN AMP SUP VOL 23 22 21 20 19 17 18 16 15 D93TL005 10 11 12 13 14 28 27 26 25 24 GND CS OUTE ATTE HYST1 ATR ATTR OUTR IREF V+ PIN CONNECTION (top view) SO28 ORDERING NUMBERS: TEA7540FP 1/12 |
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