Analog devices makes sub 1 ohm analog switches but I'm sure they are
costly. There might even be a cross-point version with lots of inputs
and outputs.

You might also be able to use high-resistance (about 100 ohm) cheap
analog switches followed by analog buffers (fast op-amps, for example)
on the outputs. There might even be such a beast available. Do you
need each pin to be able to be either input OR output, or is that
fixed?

Sean


On Mon, Feb 1, 2010 at 1:20 AM, Richard Prosser <rhprosser@gmail.com> wrote:
> Vitaliy,
> What about analogue mux's ? You may have to use something better than
> the 4051/52/53 series to get a low on resistance though. Otherwise as
> long as the voltage is within range it should work OK. =A0Maybe parallel
> up devices to get a lower resistance ?
>
> RP
>
> On 1 February 2010 17:01, ivp <joecolquitt@clear.net.nz> wrote:
>>> Any other ideas?
>>
>> Op-amps ?
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