Rail-to-rail differential input amplification stage with main and surrogate differential pairs
Abstract
An operational amplifier input stage provides a symmetrical rail-to-rail input common-mode voltage without turning off either pair of complementary differential input transistors. Secondary, or surrogate, transistor pairs assume the function of the complementary differential transistors. The circuit also maintains essentially constant transconductance, constant slew rate, and constant signal-path supply current as it provides rail-to-rail operation.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1176132
- Patent Number(s):
- 7187236
- Application Number:
- 10/935,525
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03F - AMPLIFIERS
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2004 Sep 07
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Britton, Jr., Charles Lanier, and Smith, Stephen Fulton. Rail-to-rail differential input amplification stage with main and surrogate differential pairs. United States: N. p., 2007.
Web.
Britton, Jr., Charles Lanier, & Smith, Stephen Fulton. Rail-to-rail differential input amplification stage with main and surrogate differential pairs. United States.
Britton, Jr., Charles Lanier, and Smith, Stephen Fulton. Tue .
"Rail-to-rail differential input amplification stage with main and surrogate differential pairs". United States. https://www.osti.gov/servlets/purl/1176132.
@article{osti_1176132,
title = {Rail-to-rail differential input amplification stage with main and surrogate differential pairs},
author = {Britton, Jr., Charles Lanier and Smith, Stephen Fulton},
abstractNote = {An operational amplifier input stage provides a symmetrical rail-to-rail input common-mode voltage without turning off either pair of complementary differential input transistors. Secondary, or surrogate, transistor pairs assume the function of the complementary differential transistors. The circuit also maintains essentially constant transconductance, constant slew rate, and constant signal-path supply current as it provides rail-to-rail operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {3}
}
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Works referenced in this record:
Design techniques for cascoded CMOS op amps with improved PSRR and common-mode input range
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- IEEE Journal of Solid-State Circuits, Vol. 34, Issue 2, p. 148-156
1-V rail-to-rail operational amplifiers in standard CMOS technology
journal, January 2000
- Duque-Carrillo, J. F.; Ausin, J. L.; Torelli, G.
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