Supply-noise-rejecting current source

Title: Supply-noise-rejecting current source

Abstract

Various technologies pertaining to a high-impedance current source are described herein. The current source outputs a substantially constant current by way of a first transistor that draws current from a supply. The current source is configured to feed-back noise from the supply to a feedback resistor at an input of an operational amplifier (op-amp) by way of a second transistor. The feedback resistor and the op-amp are configured such that responsive to receiving the supply noise feedback, the op-amp drives a gate voltage of the first transistor to cause the first transistor to reject the supply noise and cause the output of the current source to remain substantially constant.

Inventors:: Wessendorf, Kurt O.

Issue Date:: 2020-02-18

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1632584

Patent Number(s):: 10566936

Application Number:: 16/016,818

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

Patent Classifications (CPCs):: G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03F - AMPLIFIERS

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G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
G05F1/561 - {Voltage to current converters
G05F3/262 - {using field-effect transistors only}

H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03F - AMPLIFIERS
H03F3/345 - with field-effect devices
H03F1/301 - {in MOSFET amplifiers
H03F1/308 - {using MOSFET}
H03F2200/91 - the amplifier has a current mode topology
H03F3/45475 - {using IC blocks as the active amplifying circuit}

G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
G05F1/467 - {Sources with noise compensation}

H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03F - AMPLIFIERS
H03F2203/45526 - the FBC comprising a resistor-capacitor combination and being coupled between the LC and the IC

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DOE Contract Number:: NA0003525

Resource Type:: Patent

Resource Relation:: Patent File Date: 06/25/2018

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Wessendorf, Kurt O. Supply-noise-rejecting current source.  United States: N. p., 2020. 
        Web.

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                    Wessendorf, Kurt O. Supply-noise-rejecting current source.  United States.

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                    Wessendorf, Kurt O. Tue .  
        "Supply-noise-rejecting current source".  United States.  https://www.osti.gov/servlets/purl/1632584.

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@article{osti_1632584,

  title        = {Supply-noise-rejecting current source},

  author       = {Wessendorf, Kurt O.},

  abstractNote = {Various technologies pertaining to a high-impedance current source are described herein. The current source outputs a substantially constant current by way of a first transistor that draws current from a supply. The current source is configured to feed-back noise from the supply to a feedback resistor at an input of an operational amplifier (op-amp) by way of a second transistor. The feedback resistor and the op-amp are configured such that responsive to receiving the supply noise feedback, the op-amp drives a gate voltage of the first transistor to cause the first transistor to reject the supply noise and cause the output of the current source to remain substantially constant.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {2}

}

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Works referenced in this record:

Current source having a high power supply rejection ratio
patent, August 1999

Iravani, Kamran
US Patent Document 5,936,460
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5936460

Current source apparatus for reducing interference with noise
patent, March 2009

Yen, Chih-Jen; Hsieh, Chih-Yuan
US Patent Document 7,508,184
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=7508184

Current conveyor circuit with improved power supply noise immunity
patent, March 2007

Aude, Arlo
US Patent Document 7,193,456
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=7193456

Current source circuit with complementary current mirrors
patent, February 1991

Rossi, Domenico; Viani, Ermes; Torelli, Guido
US Patent Document 4,994,730
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=4994730

Method and apparatus for improving power supply rejection in amplifier rail to rail output stages
patent, December 2001

Edwards, Christopher F.; Maney, Jr., J. William
US Patent Document 6,329,878
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6329878

Bidirectional voltage to current converter
patent, November 1993

Smith, Michael D.
US Patent Document 5,266,887
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5266887

Current amplifiers
patent, May 1995

Ueunten, Paul
US Patent Document 5,412,309
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5412309

Amplifier having an active current source
patent, January 1998

Pass, Nelson S.
US Patent Document 5,710,522
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5710522

Increasing the linearity of a transconductance cell
patent, November 2007

Capofreddi, Peter; Shahani, Arvin R.; Shaeffer, Derek
US Patent Document 7,295,068
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=7295068

Low GM transconductor
patent, September 2014

Mehrabi, Arash; Deyerle, IV, Thurman S.; Miao, Guoqing
US Patent Document 8,841,970
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=8841970

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Title: Supply-noise-rejecting current source

Abstract

Citation Formats

Current source having a high power supply rejection ratio patent, August 1999

Current source apparatus for reducing interference with noise patent, March 2009

Current conveyor circuit with improved power supply noise immunity patent, March 2007

Current source circuit with complementary current mirrors patent, February 1991

Method and apparatus for improving power supply rejection in amplifier rail to rail output stages patent, December 2001

Bidirectional voltage to current converter patent, November 1993

Current amplifiers patent, May 1995

Amplifier having an active current source patent, January 1998

Increasing the linearity of a transconductance cell patent, November 2007

Low GM transconductor patent, September 2014

Current source having a high power supply rejection ratio
patent, August 1999

Current source apparatus for reducing interference with noise
patent, March 2009

Current conveyor circuit with improved power supply noise immunity
patent, March 2007

Current source circuit with complementary current mirrors
patent, February 1991

Method and apparatus for improving power supply rejection in amplifier rail to rail output stages
patent, December 2001

Bidirectional voltage to current converter
patent, November 1993

Current amplifiers
patent, May 1995

Amplifier having an active current source
patent, January 1998

Increasing the linearity of a transconductance cell
patent, November 2007

Low GM transconductor
patent, September 2014