US 9887014 B2 abstract a radiation hardened reference circuit includes a precision voltage reference circuit for generating a current controlling voltage at first and second terminals a driver circuit for receiving the current controlling voltage at first and second terminals and for generating an output reference voltage and a differential sampling circuit having first and second input terminals coupled to the first and second terminals of the voltage reference circuit and first and second output terminals coupled to the first and second terminals of the driver circuit application_number US 64217709 A description it is thus desirable to impart the wanted driving signal v ref v ref _ loop onto the mdacs of the adc without it being affected by any error existing between v gnd and v gnd u2032 this can be achieved by relying on the identity or precision scaling of the v gs of the follower 39 s mosfet and of the degeneration resistor which were expected and capitalized upon also in prior art in such case in fact the v ref driver can be referenced to the precision loop by way of a floating i e ground independent capacitor connected directly across the gate and source nodes of the active device as illustrated in fig4 referring now to fig4 a reference circuit 400 according to the present invention is shown having an amplifier 402 having a positive input for receiving a v in input signal a negative input and an output a compensation capacitor c loop is coupled to the output of amplifier 402 the output of amplifier 402 is also coupled to the gate of transistor m 1 the drain of transistor m 1 is coupled to the power supply voltage v the source of transistor m 1 node 414 is coupled to a first.