Re: look this Integrator
Hello,
this can't be decided without knowing the characteristics respectivly the specification (if it's a standard device) of the fully differential amplifier. Apparently, the amplifier either has limited gain or the circuit is incomplete, cause no bias is shown, in other words, the integrators initial condition would be undefined.
One explanation could be, that C reduces the amplifiers loop gain to improve stability.
Regards,
Frank