Temperature-compensated current source
US6759893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Nov 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/267
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature-compensated current source includes a first arm fixing a reference voltage, a second arm fixing a reference current, and a third arm providing an output current obtained by copying the reference current in a first current mirror. A second current mirror copies, in the voltage reference arm, the reference current while a voltage copying circuit copies the reference voltage at a node of the second arm connected to ground by a first resistor series-connected with n parallel-connected diodes. A second resistor is parallel-connected with the assembly formed by the first resistor series-connected with the n parallel-connected diodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.