Method and circuit for measuring quiescent current
US8278960B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2009 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Dec 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement circuit and method for measuring a quiescent current of a circuit under test are provided. The measurement circuit comprises: a comparator having a first input terminal for receiving a reference voltage, a second input terminal coupled to the circuit under test, and an output terminal; a current source having a first terminal coupled to a first power supply voltage terminal, and a second terminal for providing a current to the circuit under test; a first switch having a first terminal coupled to the second terminal of the current source, a second terminal coupled to the circuit under test, and a control terminal coupled to the output terminal of the comparator; and a first counter having a first input terminal coupled to the output terminal of the comparator, a second input terminal for receiving a clock signal, and an output terminal for providing a first counter value associated with the quiescent current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.