Improvement of the performances of SOI CMOS operational amplifiers by means of a gain-boosting stage

Both measurements and simulations have shown that the use of a gain-boosting architecture increases significantly the gain of the amplifier. Up to now, we have obtained very encouraging measurement results: a DC gain of 90 dB and a transition frequency of 30 MHz on a 16 pF load. The next prototypes under fabrication should give full satisfaction and correspond to the initial specifications: a DC gain of 120 dB and a transition frequency of 60 MHz on a 16 pF load.<>