This circuit was found in a General Electric documentation from 1970. Equivalent transistors can be used. The maximum signal frequency for the indicated components is 250 kHz.
The circuit shown in the figure below is suggested by ON Semiconductor (www.onsemi.com), based on...
This circuit is part of an article published in the March 1990 issue of Radio Electronics...
September 2016 - It can be obtained from Mouser Electronics the new ADC AD7779 from Analog Devices with...