Other Parts Discussed in Thread: INA296A, INA296B
Hello team TI,
I'm starting a project for a current monitor, with the following characteristics:
- voltage in the range of 30VDC to 70VDC
- maximum current of up to 400A (Imax)
- minimum current 0A (no negative current)
- shunt to use is 0.1875mOhm and the differential voltage of the shunt at 400A is 75mV
- desirable error < 2% in the range of 20A to 120A
- the analog output must be a maximum of 3.3V for input into the microprocessor AD converter
After reading the documentation and respective datasheet, it seemed to me that the best option is INA169. I deduce from what I read that this would be the most suitable circuit, basically what appears in the datasheet:
I would like, please, before building this monitor, your advice on:
- can the circuit be considered stable, in the sense of its use under the above conditions?
- would it be necessary to use filtering in this circuit?
- where would CL be used, if necessary, in the above circuit? What is the CL value? (I couldn't understand the exact purpose of filtering calculation, please, I need help on this matter)
Thank you very much for any help!
Best Regards, Luiz