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

Claim 12:
13. A receiver comprising:
a mixer circuit configured to down convert a received radio frequency signal and provide a down-converted analog signal; and
an analog-to-digital converter (ADC) coupled to the mixer circuit and configured to digitize the down-converted analog signal, the ADC comprising:
a switched capacitor circuit comprising switches coupled to capacitors;

a comparator coupled to the switched capacitor circuit; and
a control circuit coupled to the switched capacitor circuit and to the comparator, the 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, and a second input coupled to the second output of the SAR, 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.