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Cannot switch S1/D1 off on ADG1414

Hi, I have made a very simplistic setup with an arduino and the ADG1414.

And the program has a counter going from 0 to 255 and it writes this counter out via the SPI.

All switches are working just fine except S1/D1 all the other follow the count sequence just fine.

I've double and tripple checked toe connections and they are just fine. I've switched between several ADG1414's no luck.

I've of course set the speed so I would see it and I've also used a logic analyzer with same result :-(

Any ideas out there?

Here is the schematic

Thanks in advance



Error in schematic :-)
[edited by: JarlAtCloud at 7:21 PM (GMT -5) on 26 Nov 2020]
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  • Hi,

    If you have already checked several ADG1414 devices I would rule out the ADG1414 as being the cause of the issue.

    Can you share the output of the logic analyzer?

    Have you checked that all the LEDs are actually working (apologies for stating the obvious but i would like to rule that out)

    Thanks

    David

  • Sure here it is. Also weird is those dips that channel 1 has. And yes the LED's are ok :-)

    I only mounted the LED's because I started measuring the problem, so the problem is there without any load.

    I'm using channel 1 as clock as you can see and there is a dip on all channels it's not a reset, since reset is tied to VCC.

    It is not a load since all pins are connected to the logic analyzer only.

    Above is the output from the logic analyzer

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  • Sure here it is. Also weird is those dips that channel 1 has. And yes the LED's are ok :-)

    I only mounted the LED's because I started measuring the problem, so the problem is there without any load.

    I'm using channel 1 as clock as you can see and there is a dip on all channels it's not a reset, since reset is tied to VCC.

    It is not a load since all pins are connected to the logic analyzer only.

    Above is the output from the logic analyzer

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