Bandgap reference circuit with beta-compensation
US9568929B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2014 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/575
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Described are apparatuses and methods for generating a temperature-stabilized reference voltage on a semiconductor chip. An apparatus may include a differential amplifier including a first input, a second input, and an output. The apparatus may further include a first bipolar junction transistor (BJT) coupled to the first input; a second BJT coupled to the second input; and beta compensation circuitry, coupled to the first BJT and the second BJT, to regulate a first collector current of the first BJT to be independent of a first current gain of the first BJT and a second collector current of the second BJT to be independent of a second current gain of the second BJT. Other embodiments may be described and/or claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.