Systems and methods for PWM clocking in a temperature measurement circuit
US7637658B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2007 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jan 8, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Various systems and methods for pulse width modulated clocking in a temperature measurement are disclosed. For example, some embodiments of the present invention provide temperature measurement systems with a variable current source, a transistor, and a pulse width modulation circuit. The variable current source is operable to provide a first current and a second current that are applied to the transistor. A first base-emitter voltage occurs on the transistor when the first current is applied, and a second base-emitter voltage occurs on the transistor when the second current is applied. The first base emitter voltage is associated with a first sample period, and a second base-emitter voltage is associated with a second sample period. The pulse width modulation circuit provides a pulse width modulated clock including a combination of the aforementioned first period and second period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.