Forums - ADC dynamic range

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ADC dynamic range
sugie
Join Date: 2 Dec 17
Posts: 5
Posted: Fri, 2018-01-12 03:01

I'm using AIN port as ADC. I believe I should be able to read up to 1.35V since the reference voltage of ADC is VDD_AUX(=1.35V). I, however, actually couldn't read 1.35V. The maximum volatage that the CSR1011 can convert is 1.29V - 1.32V, depending of the sample.

Can someone advice why I couldn't convert up to 1.35V?

 

Thanks,

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jonesm
Join Date: 13 Jun 16
Posts: 79
Posted: Fri, 2018-01-19 20:48

Is this on a Qualcomm development platform? If yes, please list which one. If not, can you share what is connected? Have you tried a constant power source for verification?

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