erikl said:
BTW: to test if our/my assumption is correct, you could run an open loop analysis with the 2 feedBack resistors connected to GND (keep the 10kΩ's in series to your input stimuli) and check the resulting UGBW.
Erikl i tried the above and the unity gain frequency is far from the desired...I must also add that only with the input resistors,as you propose,things are ok (like my openloop initial simulations without any feedback or something at the inputs) only if R=10Ω..I cannot understand how these input resistors affect the fT...This also happens with the resistive feedback + resistive input + buffers at the output of the OTA...any idea?