Hi, we want to use AD7380 for motor control. However, the two channel signals are bipolar with +- 10V range. How could I design an ADC driver (for example, using ADA4940 or other chips) for AD7380 in this application? Is there any reference designs?
Thank you for your question.
Could you please assist me on this one.
Consider using a funnel amp like the AD8475 or the INA159 from TI.
Apologies for late response on this. Here is a circuit for the +/-10V range that you can consider. The gain of the diff amp, ADA4940 should be G=0.33 and reference for the AD7380 is set at 3.3V and deriving VCM = 1.65V from the reference. Any RF and RG combination you want as long as the gain is 0.33,