Patent ID: 11888497
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. An analog-to-digital converter (ADC) comprising:
a switched capacitor circuit having a switch control input and an output, and comprising switches coupled to the switch control input and coupled to capacitors;
a comparator having an input coupled to the output of the switched capacitor circuit and having an output; and
a control circuit comprising:
a digital sample register having an input and an output;
a successive approximation register (SAR) having an input coupled to the output of the comparator, having a first output coupled to the input of the digital sample register, and having a second output; and
a selector circuit having a first input coupled to the output of the digital sample register, having a second input coupled to the second output of the SAR, and a switch control output coupled to the switch control input, wherein the selector circuit is configured to:
route the output of the digital sample register to the switched capacitor circuit during a sample acquisition cycle; and
route the second output of the SAR to the switched capacitor circuit during sample digitization.