Device layout for reference and sensor circuits
US8736355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2012 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Jul 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/10
Abstract
A band gap reference circuit includes an error-amplifier-based current mirror coupled between a first supply node and a pair of intermediate voltage nodes, and a matched diode pair for providing a proportional-to-absolute temperature (PTAT) current. The matched diode pair includes a first diode connected between a first intermediate voltage node from the pair of intermediate voltage nodes and a second supply node, and a second diode connected in series with a resistor between a second intermediate voltage node from the pair of intermediate voltage nodes and the second supply node. Each diode has a P-N diode junction that is a homojunction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.