Other Parts Discussed in Thread: INA193, , INA228, INA229
Hi Team,
We are planning to use INA193 amplifier for 1mA to 4A current measurement. Customer wants to meet 1mA accuracy.
FSR=3V
Vsupply=3.3V
Vcommon mode voltage=40V
Rsense=25mohm.
With Rsense of 25mohm,we can't able to achieve the Vsn& Vsp conditions with single Gain.
We have chosen INA293A5-Q1 part, Gain =500 for measuring 0.5mA-240mA current range and INA293A1-Q1 part, Gain =20 for measuring 240mA-4A current range.
Attached the schematics diagram and Error budget analysis herewith.
Request you to verify and confirm what is the maximum accuracy INA293A5-Q1 and INA293A1-Q1 parts can provide for the above conditions.
Request you to share the error calibration techniques also.
Regards,
D.Meenalochini