AduCM360 ADC conversion rate


Hi,

I have a problem with AduCM360 ADC conversion rate. I have changed FLT settings, to obtain the best conversion rate, but I cannot get under 2ms. The 2 ms duration is  too much for my application. What settings should I use to get fADC=3906 Hz?

The adc config is : Internal reference, continuous conversion

Looking into table 16 and 17 in UG, I see that to obtain the best rate, i should configure the filters like lines: 1,2,6,7

The main difference that i see is the settling time, that is the best for line 1 in Table 16. Still, I can't get under 2ms per conversion.

Please help!

Thank you!

Ionut

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  • Hi Alex,

    Thanks for the hint. I played a bit with the excel and with filter register values. The best I got is between 1 and 2 ms (i didn't put an exact timer for less than 1 ms interval). It seems that the fAdc is not the problem (3096Hz), but the settling time is (the excel shows 1.02 ms delay). I know next measurement would take less, but my application requires me to change adc config (input channels), so the settling time is delaying the whole thing every time.

    Thanks,

    Ionut

Reply
  • Hi Alex,

    Thanks for the hint. I played a bit with the excel and with filter register values. The best I got is between 1 and 2 ms (i didn't put an exact timer for less than 1 ms interval). It seems that the fAdc is not the problem (3096Hz), but the settling time is (the excel shows 1.02 ms delay). I know next measurement would take less, but my application requires me to change adc config (input channels), so the settling time is delaying the whole thing every time.

    Thanks,

    Ionut

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