TSSP4056 Datasheet PDF - VISHAY

The TSSP4056 from Vishay is a sensor for fast proximity sensing. This is of constant gain or AGC "0" type and contains a band-pass filter tuned so that the sensor reaches its highest sensitivity for signals at 56KHz. Like any receiver based on remote control technology, the TSSP4056 can also receive signals at nearby frequencies with a lower gain. The constant gain AGC0 refers to the sensor"s ability to change its amplification characteristics in the presence of modulated infrared noise coming from CFL lights. It is generally desirable for remote control receivers to automatically reduce their gain under such conditions to avoid generating spurious pulses.