Glossary Term: Transconductance Amplifier
Definition
An amplifier that converts a voltage to a current. Also known by several other terms (see synonym list). One synonym is OTA, or operational transconductance amplifier, a term that marries the terms transconductance amplifier and operational amplifier.
The term derives from "transfer conductance" and is measured in siemens (S), where 1 siemens = 1 ampere per volt. It is represented with the symbol gm. The basic gain of vacuum tubes and FETs is expressed as transconductance.
See: Transconductance Amplifier Buffers Current Transformer
Synonyms
- OTA
- VCIS
- mutual conductance
- operational transconductance amplifier
- voltage controlled current source
Related Parts
- MAX435 - 250MHz Wideband Transconductance Amplifier with Differential Output
- MAX436 - 250MHz Wideband Transconductance Amplifier with Differential Output
See Also
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