In a message dated 2/17/01 5:49:15 PM Pacific Standard Time,
neil_gandler@GETMAI.COM writes:

> I would like to use digital potentiometers for digital tuning of an analog
> filter, as an alternative to a noisy Switched Capacitor filter, or more
> expensive and complex DSP solution. The problem with most Digital Pots, is
> that the end to end resistance tolerance is 20% of greater. I am searching
> for a digital potentiometer with precision resistance settings <1%. So a
> setting of 12.4K would be 12.4K +/-1%. I would appreciate any leads. Thanks!
>

Why not check out Microchip's own digital pots.?  I believe their max
tolerance is ~1% Here's a link:

http://www.microchip.com/10/lit/pline/analog/anicateg/digipot/index.htm

Regards,

Tim Hamel

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