Other Parts Discussed in Thread: INA293
I search support on INA197,
I use sense current AOP INA197 for a large range [0A ; 40A] with an sense resistor of 5mOhms .
The supply of amp is 12V and and force common mode (Vcm=+15V), in the aim to work in case describe in figure 26 to your datasheet component
"8.4.2.3 Low VSENSE Case 1: VSENSE < 20mV, −16v ≤ VCM < 0; and Low VSENSE Case 3: VSENSE < 20mV, VS < VCM ≤ 80V"
In my application ,i have curve simulary to the figure 26 some time (one time in two).
I have trace curve for current 0A to 400mA wich is equivalent to Vsense [0mV to 2mV]
See attachents document in x axis current 0 to 400mA and y axis V out of INA197 in mV
The curve is sometime linearity and other no linearity, i don't find an explication of this delta
One day i suppose offset Vos, but we i and this no better result.
It is possible to have some support on my application ?
Thank a lot
Best regard
MG