4093 Sine Square Converter (CB26335E)

Found in a Popular Electronics from the 90s, this circuit operates up to about 5 MHz input.

10 kHz Low Pass Filter (CB14133E)
The circuit shown is suggested by National Semiconductor in its 1994 Linear Applications Handbook. We...
Simple AM radio ZN416E (CB8203E)
The ZN416E integrated circuit is uncommon today. It consists of a complete radio, like the one...
Voltage Reference with the LMV321 (CB4744E)
In the figure we show how to implement a voltage reference with the ON Semiconductor rail-to-rail...