Patent ID: 11901864
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. An electronic system, comprising:
an imaging device configured to provide a signal;
a back-end readout circuit configured to generate a digital signal from an output voltage; and
a circuit coupled between the imaging device and the back-end readout circuit, wherein the circuit is configured to generate the output voltage based on the signal from the imaging device, the circuit comprising:
an amplifier having an input and an output;
a voltage comparator having a first input, a first output, and a second output, the first input of the voltage comparator coupled to the output of the amplifier;
a variable capacitor circuit coupled between the input and the output of the amplifier and coupled to the first output of the voltage comparator, and comprising a first capacitor and a second capacitor coupled in parallel with one another between the input and the output of the amplifier; and
a charge dump circuit having an input and an output, the input of the charge dump circuit coupled to the second output of the voltage comparator, the output of the charge dump circuit coupled to the input of the amplifier.