Inventors:
Oleg Korobeynikov - Swampscott MA, US
Joseph M. Kulinets - North Andover MA, US
Vladimir Protasov - Revere MA, US
Peter R. Nuytkens - Melrose MA, US
Assignee:
Custom One Design, Inc - Melrose MA
International Classification:
G06G 7/186
Abstract:
Methods and apparatus for improved current-to-voltage integrators reducing charge injection and kT/C errors from capacitor switching and intrinsic operational amplifier noise (i.e., offset, 1/f noise, thermal noise) during the reset cycle of the integrator, simultaneously reducing demands on the reference voltage source, using correlated double sampling to compensate for DC offset and low frequency op-amp noises, and “fake” integration and a capacitor divider to eliminate or significantly reduce kT/C noise and charge injection.