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DRV425-BUSBAR-EVM: DRV425

Part Number: DRV425-BUSBAR-EVM
Other Parts Discussed in Thread: DRV425

Hello 

I am trying to measure the rms noise level of DRV425 using its evaluation kit. I am using 24 bits ADC and ADC's measured rms noise level is under 10uv, but when I am connecting the DRV425 output and its reference voltage to the ADC in the differential mode, the rms noise that I am measuring is over 50uv. According to the datasheet it suppose to be under 20uv (17nTrms) with the resistor that I am using. 

Please let me know how I can reach to this noise level.

Thanks