INA114: new

Hi 

I re-open  this subject 

The generator now delivers stable 29.56 ua 

but il need to add a current monitor which will control max current about 1MA in case of problem with tue generator

I've chosen an TI INA202 

I insert a shunt of 10 ohms between generator and load which car vary between 100k and 350 k as already explained before

I get the following problem

load under 200 k .. the current generator pass from 29.56 to 30.5 uA ????? 

not a big problem but

when I put a 

300 k load .. current fall to 25 uA !!!

I don't understand why ? I've checked that 2.5 V is always on resistor 91k of the generator..

I know that a part of current is to the inputs of the INA 202 but?

Could you help ?

if necessary I will post a new subject..

Thanks