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PSoC 5, 3 & 1 MCU

Chva_1477726
New Contributor II

I have a 6 input analog multiplexer connected to a 12Bit SAR ADC on a PSoC5LP. I want to connect one of the Mux inputs to the internal analog ground of the PSoC5LP in order to get a 0V offset reading through the Mux. How can I achieve this.

I know I can use a pin connected to 0V on the outside, but the PCB is already made, so it is not an option.

Any suggestions how such a routing can be achieved will be welcome.

Best regards

Chris

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1 Solution
odissey1
Honored Contributor II

Chva,

I have no problem compiling this schematic

AMux-Vref_01a_A.png

View solution in original post

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2 Replies
odissey1
Honored Contributor II

Chva,

I have no problem compiling this schematic

AMux-Vref_01a_A.png

View solution in original post

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Chva_1477726
New Contributor II

Hi Odissey1

I should kick myself. I dragged the 1.024V ref in as I could not find anything else for Analog, but I never went into the properties!!

Thanks for your assistance.

Regards

Chris

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