This circuit was found in a 1980s Intersil documentation. The integrated circuit used is not common today. The power supply must be symmetrical.
This decoder for FSK modulated signals can operate at frequencies of 10.8 MHz. We find it in...
This circuit came out in a Popular Electronics from December 1995. It is a double T configuration that...
This circuit is from a Linear Technology manual from the 90's. The integrated circuit is from the...