System and method for calibrating a circuit
US8766833B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2013 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Mar 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/46
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In accordance with an embodiment, a method of calibrating a circuit includes coupling a first reference voltage to a first input of the circuit, coupling a programmable reference voltage to a reference node of a digital-to-analog converter (DAC), such that the gain of the DAC is dependent on an input value at the reference node. The method further includes providing a first predetermined input code to the DAC, summing an output of the DAC with the first reference voltage to produce a summed output, comparing the summed output to a threshold, and adjusting the programmable reference voltage until the summed output is within a predetermined range of the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.