This amplifier was found in Burr-Brown documentation from the 90's. The gain can be programmed by resistor Rg as per the table given in the diagram. The power supply must be symmetrical.
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...