[sdiy] selecting muxes??

[Happy Harry]

Howdy: inline


> >The 4000 series have limited voltage range... not ideal for bipolar
> >supplies except with some dirty tricks (like +/- 7.5V supplies or
> >cheating on the negative supply).
>
>I checked again.  Many of the 4000 (4051, 52, 53) series muxes have Vdd,
>Vss, and Vee power pins, and can handle AC signals.

Same comment.... You are limited to 18V total, maximum so you cannot use the 
standard +/- 12 to 15V supplies.  The on-resistance variation
over the full voltage range is NOT very good.

OTOH, units like the Prophet V used the dirty tricks to get quite
acceptable performance out of 4000 series CMOS analog switches...


> >There is also "charge injection" as a spec which relates to how much of
> >the command signal gets coupled into the switched signal. This can be
> >very important in S/H apps etc.  Less is better.
>
>OK :)  How would that spec be listed??

As "Charge Injection" in (your small prefix here) coulombs.

If it doesn't say you don't want to know....


>Do you know a vendor in the US for the Siliconix DG series??

Check the Vishay- Siliconix website for the distributor near you...
;^)


H^) harry




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