Current generator
US9876979B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2016 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Dec 6, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2201/0275
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An example current generator may include a low dropout regulator (LDO) coupled to receive a reference voltage and provide a reference current in response, where the LDO adjusts a current level of the current reference in response to a calibration signal. A current controlled oscillator coupled to receive a reference current copy from the LDO and generate an oscillating signal in response, where a period of the oscillating signal is based at least in part on a level of the reference current copy. A pulse generator coupled to provide an adjustable pulse signal. A counter coupled to determine a number of periods of the oscillating signal occurring during a duration of the pulse signal, and provide a control signal indicative of such, and a digital calibration circuit coupled to receive the control signal and provide the calibration signal to the LDO in response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.