[sdiy] Operational Transconductance Amplifiers

[Andre Majorel]

On 2010-03-09 12:42 -0600, Walker Shurlds wrote:

> does anyone know of a good website/book that explains [OTA]
> thoroughly?

"An OTA is basically a two quadrant multiplier. It multiplies an
input voltage by a control current and produces a current as its
output. The OTA's transfer function is that of a differential
transistor pair, which is pretty convenient, although, a bit tough
to analyze."

  http://noniandjim.com/Jim/SecretsOfOTAs.pdf

-- 
André Majorel http://www.teaser.fr/~amajorel/