Predictive Integrators with Thermal Noise Cancellation

This paper proposes a simple thermal noise cancellation technique to effectively reduce the output noise in predictive integrators. By combining a low-gain two-stage amplifier and a small auxiliary noise-cancelling capacitor, the output noise is highly attenuated. Simulation results for a classic Nagaraj-Ki predictive integrator, considering real MOS switches, demonstrate that the output thermal noise can be reduced up to 87%.