H11F1 Analog Fet Optocoupler

[Edu Silva]

Hi all!

Has anyone used these chips from QT Technologies? I found it while flipping
through my Farnell catalog, and it appears very interesting to me.

It's an optocoupler with bilateral analog FET output, designed for
distortion-free control of low-level AC and DC signals.

Some nice features:

As a remote variable resistor:

	<200ohms to >300M
	>99.9% linearity
	15pf shunt capacitance
	>100G I/O isolation resistance

As an analog switch:

	extremely low offset voltage
	60V pk-pk signal capability
	no charge injection or latchup
	t.on t.off < 25us

It can be used instead of the LED+LDR pair with lots of advantages, like
faster on/off times, better linearity, and well matched characteristics,
just to name a few. Not only VCA's and phasers, but any voltage-controlled
synth module can be built with one or more of these guys!

More info at:

http://www.qtopto.com/oi/o0801.htm

Can any of you give me suggestions/ideas/opinions, etc...?

Cheers,
Edu

_____________________
Edu Silva - ES2 Audio
Salvador-Bahia-Brazil