Hi Sushant, 1. Your calculation is correct, but read on to #2 as you may need to reduce this value... 2. I think you will need the +/- 12.5A current to result in an input voltage that swings +/-1.5V around a 1.5V common-mode voltage. In this case you will probably need to fix one side of the shunt resister to 1.5V and then the maximum voltage swing will be reduced by half, so the current swing will in turn be limited to +/- 6.25A. 3. This is fine. 4. Other components to look for would be: The front-end amplifier: check out this list as a starting point: Precision amplifiers A 2.5V reference source. I would recommend the REF5025 or any of the REF6x25 devices. Low-noise LDO for the power supplies of the ADS1256 . I hope that helps, Chris
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