Base current compensation for a BJT current mirror
US9864395B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 2, 2016 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Dec 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/267
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A current mirror circuit includes an input current leg and an output current leg. The input current leg includes: a first bipolar junction transistor (BJT) having a collector terminal configured to receive an input current sourced at a current node and a first metal oxide semiconductor field effect transistor (MOSFET) having a gate terminal coupled to the current node and a source terminal coupled to a base terminal of the first BJT. The output current leg includes: a second BJT having a collector terminal configured to supply an output current and a second MOSFET having a gate terminal coupled to the current node and a source terminal coupled to a base terminal of the second BJT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.