I want to learn how to demodulate a 38 kHz IR PWM signal.(Such as that transmitted by a TV Remote Control) I know it can be demodulated easily using a TSOP1738 IR receiver.
I realize that the TSOP1738 can be much more easily implemented, but how is the signal demodulated inside the reciever ?( I am not planning to build a demodulator, just curious how it works).
I searched online but couldn't find the mechanism anywhere. I looked at the datasheet and the block diagram just shows a demodulator but not how it works.
Edit : Typo in the title