It is an improved version of the previous circuit with a voltage follower that reduces the load impedance. The circuit was found in American documentation from the 1980s.
This circuit was found in a 1967 General Electric documentation. The components are from that...
This configuration applies to common operational amplifiers. This circuit is from the datasheet of the...
Found in Harris' 90s documentation, this circuit has a gain of 60 dB at 20 MHz. Equivalent...