Patent · US Active

Techniques for measuring voltages in a circuit

US7944248B2 · kind B2 · utility

8Cited by

4References

11Claims

0Family size

Assignee

Altera Corporation · US

Inventors

Andy T. Nguyen · San Jose, US
Ling Yu · Shanghai, CN

Key dates

Filing date	Apr 17, 2008
Grant date	May 17, 2011
Priority date	—
Expiry date	Nov 29, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01R19/16552
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A circuit can include a comparator, a resistor divider, a control circuit, and a multiplexer. The comparator compares an internal supply voltage of the circuit to a selected reference voltage. The resistor divider generates reference voltages. The control circuit receives an output signal of the comparator and generates a select signal. The multiplexer transmits one of the reference voltages from the resistor divider to the comparator as the selected reference voltage in response to the select signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.