Patent · US Active

Voltage reference circuit with complementary PTAT voltage generators and method

US7595627B1 · kind B1 · utility

5Cited by

7References

20Claims

0Family size

Assignee

NATIONAL SEMICONDUCTOR CORPORATION · US

Inventors

Torsten Mahnke · Stuttgart, DE
Stephan Drebinger · Munich, DE
Michael Brauer · Austin, US

Key dates

Filing date	Sep 14, 2007
Grant date	Sep 29, 2009
Priority date	—
Expiry date	Mar 20, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG05F3/16
WIPO fieldControl
WIPO sectorInstruments

Abstract

A voltage reference circuit is provided. The voltage reference circuit includes a first PTAT voltage generator and an amplifier. The first PTAT voltage generator is operable to generate a first PTAT voltage. The amplifier, which is coupled to the first PTAT voltage generator, comprises a second PTAT voltage generator that is complementary to the first PTAT voltage generator. The second PTAT voltage generator is operable to generate a second PTAT voltage. The amplifier is operable to generate a reference voltage based on the first PTAT voltage and the second PTAT voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.