We found this circuit in the 1989 Radio Electronics Experimenter. The circuit uses common components, and the thermistor is supposed to determine the value of the trim potentiometer.
The values of the capacitance between output A and ground can be programmed digitally in 18 steps...
This circuit is suitable for low impedance sources, using an operational amplifier. The gain is...
Although it is a common configuration today, this circuit was taken from an old publication. The...