Patent ID: 11962277
Assignee: AMS INTERNATIONAL AG
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A switched-capacitor amplifier, comprising:
a comparator having input terminals and an output terminal;
a sample capacitor coupled to one of the input terminals;
an amplification capacitor coupled to the one of the input terminals and through a first switch to a discharge current source and through a second switch to a charge current source;
a controller configured to operate the first and second switches in dependence on an output signal of the comparator; and
a closed loop control circuit configured to determine a delay of the comparator and control an offset of the comparator in response to the determined delay,
wherein the closed loop control circuit comprises a time-to-digital converter to determine a signal dependent on the delay of the comparator, wherein the signal is fed back to the comparator to set an offset of the comparator, and
wherein the closed loop control circuit further comprises an integrator connected between the time-to-digital converter and the comparator.