Part Number:INA190
Hi,
I saw the input bias current of INA190 is at nA level, which can be ignored in the application of TIDA-01040. When Gain=50, I saw the specified offset(max), offset drift(max), CMRR(min), gain error temperature drift(max) of INA190 are all batter than INA188. Does it mean replacing INA188 by INA190 in TIDA-01040 introduces not only easier power supply, but also higher current measurement accuracy? I ignored the calibration in the system design, just compare amplifier to amplifier.
I'm not sure if the CMRR and gain error specified in datasheets of INA190 and INA188 are the same thing in the same test condition.
My application is high side DC current measurement with 1mohm current shunt, 50A current, 4.2V common voltage.
Thanks.