How much current can "out" pin of INA195 supply?

[cupoftea]

Hi,
The output pin of the INA195 current monitor......how much current can it supply. Fig 7, Page 8 appears to tell that if the out pin supplies just a few 100 microamps then the accuracy drops? (the out voltage goes down)

INA195

https://www.ti.com/lit/ds/symlink/ina194.pdf?ts=1642890912712&ref_url=https%253A%252F%252Fwww.google.com%252F

 

[FvM]

Fig. 7 is describing voltage swing and has nothing to do with accuracy. Load dependent error is specified by 1.5 ohms output impedance.

 

[cupoftea]

Thanks, and may i ask do you believe that the INA195 can drive an op-amp at its output as attached?

 

[KlausST]

Hi,

The input current of an Opamp is near zero, thus driving an Opamp is the easiest thing to do.
But in your case it's driving 10k against about 1.8V.

Now that the INA can source 15mA ... this is no problem. The INA can sink about 400uA .. no problem, too.

I wonder why you are concerned about accuracy/precision. Usally 12V is a supply voltage...this means: not very accurate but noisy. but here it us used as reference voltage. Not even a noise filter is installed.
Also there is a diode at the output .. it's voltage drop varies with temperature and current.

Klaus