Re: MOSFET Analog Switch Question

On 20/04/2025 7:41 am, JM wrote:

On Sat, 19 Apr 2025 12:48:23 -0800, Christopher Howard
<christopher@librehacker.com> wrote:
 

Hi, I have some DG212BDJ Quad SPST CMOS Analog Switches. I am wondering
if there is some significance, for each switch, to how the source and
drain pins are used/fed. The data sheet says Analog Signal Range
(V_Analog) is +/- 15 V, so it doesn't matter which way the current is
moving across source and drain pins, right?
>

Right.  The switch will be made with parallel PMOS/NMOS.

The data sheetx doesn't say that explicitly - they mostly just says that it is a CMOS part - but it is clearly implied.
https://www.analog.com/media/en/technical-documentation/data-sheets/dg202-dg212.pdf
https://www.vishay.com/docs/61556/dg211.pdf
There should be application notes around that go into more detail, but Google doesn't seem to want to find them for me.
--
Bill Sloman, Sydney