[sdiy] VCLFO and VCADSR details available online

[John Luciani]

On 12/18/06, Adam Schabtach <adam at studionebula.com> wrote:

> One thing I've been wondering is whether anyone knows of a simple,
> low-parts-count protection circuit for microcontroller inputs.
> ....
> It seems like protecting the A/D inputs
> of micros must be a common-enough problem that someone has a simple
> solution, like maybe an off-the-shelf chip...?

If you don't mind SMT you could check the Littelfuse TVS parts. I am using the
SP724AHT (SOT23-6 package) which protects four lines from positive and negative
spikes. The part is $1.09(1) and is stocked by Mouser (possibly
Digikey and Allied).

I am not sure if the parts are available in TH.

(* jcl *)

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