AnsweredAssumed Answered

+/- 2.5V inputs on AD7739

Question asked by F.Zhang on Mar 20, 2015
Latest reply on Mar 30, 2015 by jtee

Hi All,

 

I am looking into AD7739 for +/- 2.5V inputs application. I figured it out that if +/-2.5V on all AIN pins, the AGND has to be at -2.5V and DGND has to be at -2.5V also (The absolute limits for the device between AGND and DGND is +/- 0.3V, AIN to AGND is -0.3V). This will make the SPI signals to be +/- 2.5V swings.

 

Am I understanding this correct?

Any comments or help are much appreciated.

 

 

Regards,

F.Z.

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