U4087B Datasheet Low Voltage Voice Switch Interface Circuit

Manufacturer: TEMIC Semiconductors (now Microchip)

Datasheet Details

Part number	U4087B
Manufacturer	TEMIC Semiconductors (now Microchip)
File Size	133.92 KB
Description	Low Voltage Voice Switch Interface Circuit
Download	U4087B Download (PDF)

The voice switch interface circuit U4087B is a linear integrated circuit for improvement of handsfree performance of U4090B system.

The U4087B provides an optimized interface to U4090B, the necessary level detectors and switching control for a properly operating speakerphone.

The detection sensitivity and timing are externally controllable.

www.DataSheet4U.com U4087B Low Voltage Voice Switch Interface Circuit for Hands-free Operation in.

D Low voltage operation: 3.0 to 7.0 V D Four point signal sensing D Monitoring system for background noise level D Case: SO 16 D Chip Disable for active/standby operation Benefits D Fast channel switching allows quasi duplex operation D Low current consumption Block Diagram TLO2 16 TLI2 15 Logic Noise detector CPT 14 VB 7 VM 13 CD GND 6 5 TLO1 2 Logic 1 TLI1 Bias = +.
+ TS DIRE Logic DIRA Charge RLI2 9 Logic 8 RLO2 12 CT C. T. Generator 10 TLDR 11 TLDT Discharge.

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