i.MX Processors中的主题 IMX7 ADC VREF

IMX7 ADC VREF

thomaskofoedhan — Mon, 03 Apr 2017 07:40:58 GMT

I'm trying to figure out what the VREF for the ADCs is. It is mentioned in table 89 in the datasheet for specifying the input voltage but I can't find the specification for VREF itself.

I'm also looking for some specification from which I can calculate my maximum input impedance. This must have something to do with sample rate etc. as this is ultimately and RC coupling that needs to be charged/discharged. I only intend to measure dc-voltages.

Re: IMX7 ADC VREF

Yuri — Mon, 03 Apr 2017 08:12:51 GMT

Hello

The ADC VREF relates to VDDA_ADC1_1P8 and VDDA_ADC2_1P8.

Have a great day,
Yuri

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