I want to know the ADC gain of current sense used for DC current sensing in DRV8313EVM design?
Is it inverting or non-inverting configuration?
What is the offset for the same?
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The gain of this external CSA on the EVM is 33.2. The output offset for this configuration is approximately ± 3.32 mV, and the current sense offset is approximately ± 10 mA.
My apologies, I provided you with the expected offset error of this particular op amp in my previous post (± 3.32 mV). The resistor divider on the + pin of the op-amp biases the output at 1/2 of the 3.3V input since the two resistors of the voltage divider are equal. The output offset would be 1.65V.