Opвђ“amp Circuits Manual. Including Ota Circuits -

: An OTA can simulate a resistor whose value is determined by the bias current, allowing for digital or analog control of resistance in a circuit. Understanding Operational Transconductance Amplifiers | PDF

: OTAs are used to create filters where the cutoff frequency is electronically tunable. This is common in music synthesizers and communication gear. Op–Amp Circuits Manual. Including OTA Circuits

to zero, OTAs function as excellent electronic switches or gated amplifiers. : An OTA can simulate a resistor whose

: OTAs feature an additional terminal for amplifier bias current ( IABCcap I sub cap A cap B cap C end-sub to zero, OTAs function as excellent electronic switches

with an external control voltage, the gain of the signal path can be modulated dynamically.

). This terminal allows the user to electronically adjust the amplifier's transconductance ( ), effectively providing a way to program the gain.