Max. ratings on ADCs

SigmaDSP & SigmaStudio ChristianH Jan 27, 2014 00:00 2 replies Original on forum ↗

ChristianH Question

Jan 27, 2014 00:00

Hi,

are there any maximum ratings for all ADCs (Audio and Aux) on the ADAU1701?

I need to know for the hardware design what maximum and minimum voltages can be applied to the ADCs (also negative values? -0.7V?).

What I'm looking for are limits that must not be exceeded to avoid any damages to these inputs.

I can see a limit of 3.1V for a full-scale value on the Aux ADCs but I don't think this is the maximum allowed voltage on this input, is it?

Thanks

Christian

Audio Signal Processors

ratings

SigmaDSP Audio Processors

adau1701

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ADIApproved Reply

Jan 27, 2014 00:00

The upper limit should be AVDD + 0.3 V. The lower limit should be GND - 0.3 V. So, in a normal system, the allowable range would be from -0.3 V to +3.6 V. I'm not sure why this isn't listed in the absolute maximum ratings section of the datasheet.

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ChristianH Reply

Jan 28, 2014 00:00

Hi,

I also expected it to be in the datasheet.

Thank you!

Christian

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