Kinetis MicrocontrollersのトピックRe: Overvoltage protection for TWR-KM34Z50M ADC inputs

Overvoltage protection for TWR-KM34Z50M ADC inputs

svenmoeller — Fri, 16 May 2014 08:12:45 GMT

Hello,

is there already an overvoltage protection included for the ADC inputs?

Or what would be the best way of implementing a protection? (the voltage may not exceed +-250mV)

Simply using two antiparallel diodes? -> Are there existing diodes with a forward bias of 250mV?

Thank you

Re: Overvoltage protection for TWR-KM34Z50M ADC inputs

Wlodek_D_ — Fri, 16 May 2014 09:48:57 GMT

Hello,

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Re: Overvoltage protection for TWR-KM34Z50M ADC inputs

perlam_i_au — Wed, 21 May 2014 21:23:28 GMT

Just as you mention antiparallel diodes could be a good protection I would also suggest a simple RC filter in order to avoid noise.

Have a nice day,
Perla Moncada

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