Patent ID: 11942960
Assignee: ANALOG DEVICES, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A method of processing an electrical signal using an analog-to-digital converter (ADC) having an ADC input node, an ADC output node, and an ADC reference node, the method comprising:
receiving an analog signal at the ADC input node;
generating at the ADC output node a digital signal, wherein the digital signal is responsive to the analog signal and based on a signal received at the ADC reference node;
generating, via a bias signal circuit, a reference bias;
generating, via a reference standard circuit, a reference standard signal; and
operating the converter in a first mode and in a second mode, wherein:
in the first mode, the reference bias is coupled to the ADC input node and the reference standard signal is coupled to the ADC reference node to generate a digital measurement of the reference bias using the reference standard signal as a reference at the ADC reference node; and
in the second mode, an input analog signal is coupled to the ADC input node and the reference bias is coupled to the ADC reference node to generate a measurement of the analog signal using the reference bias as a reference at the ADC reference node.