Definitely doable, but not necessarily a workable idea. The fact that your IDs are located across 50 devices, brings into play Vcc considerations too. If the VCC across devices varies, you will have ID overlaps. So, it may not work.
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Definitely doable, but not necessarily a workable idea. The fact that your IDs are located across 50 devices, brings into play Vcc considerations too. If the VCC across devices varies, you will have ID overlaps. So, it may not work.
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breesy, As long as you have the reference for the A/D selected as VDD and VSS as well as the same source used for the resistor divider then it wil work perfectly. The A/D is then ratiometric as far as the source voltage. I would use 1% resistors with the same temperature coefficient.
Dave Purola,
N8NTA
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