Patent ID: 11888498
Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A successive approximation registers (SAR) analog-to-digital converter (ADC) comprising:
a digital-to-analog converter (DAC) to generate a first DAC output voltage based on a digital output code associated with an analog input voltage;
a comparator to compare the first DAC output voltage to the analog input voltage to generate a comparison result including a first positive output and first negative output; and
SAR logic circuitry comprising:
first logic circuitry to gate, based at least in part on a digital feedback, at least one of the first positive output or the first negative output of the comparator to second logic circuitry, the digital feedback comprising information associated with at least one of an opposite polarity of the a first positive output or an opposite polarity of the first negative output; and
the second logic circuitry downstream of the first logic circuitry;

wherein the digital feedback comprises an output of the second logic circuitry, the output responsive to at least one of a second positive output or a second negative output of the comparator; and
wherein:
the first positive output and the first negative output of the comparator are associated with a current bit trial; and
the at least one of the second positive output or the second negative output of the comparator are associated with a previous bit trial.