Bandgap reference generator utilizing a current trimming circuit
US7944280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2008 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Aug 26, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A circuit for providing a bandgap voltage. The circuit includes a classic bandgap reference voltage generation circuit including first end second serially connected transistors acting as a current mirror to another portion of the classical bandgap reference circuit and being coupled between a supply voltage Vdd and an output resistor. The circuit also includes a current trimming circuit coupled in parallel with the classical bandgap reference generation circuit including a fixed element portion including a plurality of transistors and a switch portion including a plurality of switches. Each of the plurality of transistors is coupled to the supply voltage Vdd and to a one of the plurality of switches and each switch includes a fuse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.