Based on National Semiconductor's LM4130 reference circuit, this circuit was found in Internet documentation. The circuit has an output impedance of 1 Mohm.
We found this circuit with an operational transconductance amplifier in the Motorola Linear...
We found this circuit in the 1994 Linear Applications Handbook by National Semiconductor. The...
In the figure we have a differentiator with the LM3900 transconductance amplifier. The circuit is...