Compensation for low gain bipolar transistors in voltage and current reference circuits
US5349286A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Jun 18, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A bandgap reference circuit 30 includes a current generation circuit 32, a voltage generation circuit 34 connected to current generation circuit 32, and a compensation circuit connected to current generation circuit 32 and voltage generation circuit 34. Current generation circuit 32 sources a current to voltage generation circuit 34 which translates the current into a voltage. Compensation circuit 36 monitors current generation circuit 32 and provides a supplemental current to voltage generation circuit 34. Voltage generation circuit 34 receives the supplemental current and translates it into a supplemental voltage. The summation of the voltage produced by the current received by current generation circuit 32 and the supplemental voltage produced by the supplemental current received by compensation circuit 36 produces a stable reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.