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TCA440 datasheet specification
TCA440 is a AM receiver circuit for LW, MW and SW in battery and line operated radio receivers. It includes an RF prestage with AGC, a balanced mixer, separate oscillator and a IF amplifier with AGC.
For use in high quality radio sets the TDA4001 should be preferred to the TCA 440.
TCA440 specifications - TCA [...]
Automatic Gain Control - Volume AGC
The schematic we propose offers a less harmonic signal and a supplementary gain, so it get rid of those annoying variation between speech and music wich offen appears at radio and tv. This automatic gain volume control schematic need a +-15V power supply and 6mA.
Bellow you get the volume agc circuit pcb, graphic and [...]
