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Title: Offset-free rail-to-rail derandomizing peak detect-and-hold circuit

Abstract

A peak detect-and-hold circuit eliminates errors introduced by conventional amplifiers, such as common-mode rejection and input voltage offset. The circuit includes an amplifier, three switches, a transistor, and a capacitor. During a detect-and-hold phase, a hold voltage at a non-inverting in put terminal of the amplifier tracks an input voltage signal and when a peak is reached, the transistor is switched off, thereby storing a peak voltage in the capacitor. During a readout phase, the circuit functions as a unity gain buffer, in which the voltage stored in the capacitor is provided as an output voltage. The circuit is able to sense signals rail-to-rail and can readily be modified to sense positive, negative, or peak-to-peak voltages. Derandomization may be achieved by using a plurality of peak detect-and-hold circuits electrically connected in parallel.

Inventors:
 [1];  [2];  [3]
  1. (Nesconset, NY)
  2. (Bellport, NY)
  3. (Coram, NY)
Issue Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY
OSTI Identifier:
875012
Patent Number(s):
6512399
Assignee:
Brookhaven Science Associates LLC (Upton, NY) BNL
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
offset-free; rail-to-rail; derandomizing; peak; detect-and-hold; circuit; eliminates; errors; introduced; conventional; amplifiers; common-mode; rejection; input; voltage; offset; amplifier; switches; transistor; capacitor; phase; hold; non-inverting; terminal; tracks; signal; reached; switched; storing; readout; functions; unity; buffer; stored; provided; output; sense; signals; readily; modified; positive; negative; peak-to-peak; voltages; derandomization; achieved; plurality; circuits; electrically; connected; parallel; electrically connected; hold circuit; input voltage; /327/

Citation Formats

DeGeronimo, Gianluigi, O'Connor, Paul, and Kandasamy, Anand. Offset-free rail-to-rail derandomizing peak detect-and-hold circuit. United States: N. p., 2003. Web.
DeGeronimo, Gianluigi, O'Connor, Paul, & Kandasamy, Anand. Offset-free rail-to-rail derandomizing peak detect-and-hold circuit. United States.
DeGeronimo, Gianluigi, O'Connor, Paul, and Kandasamy, Anand. Wed . "Offset-free rail-to-rail derandomizing peak detect-and-hold circuit". United States. https://www.osti.gov/servlets/purl/875012.
@article{osti_875012,
title = {Offset-free rail-to-rail derandomizing peak detect-and-hold circuit},
author = {DeGeronimo, Gianluigi and O'Connor, Paul and Kandasamy, Anand},
abstractNote = {A peak detect-and-hold circuit eliminates errors introduced by conventional amplifiers, such as common-mode rejection and input voltage offset. The circuit includes an amplifier, three switches, a transistor, and a capacitor. During a detect-and-hold phase, a hold voltage at a non-inverting in put terminal of the amplifier tracks an input voltage signal and when a peak is reached, the transistor is switched off, thereby storing a peak voltage in the capacitor. During a readout phase, the circuit functions as a unity gain buffer, in which the voltage stored in the capacitor is provided as an output voltage. The circuit is able to sense signals rail-to-rail and can readily be modified to sense positive, negative, or peak-to-peak voltages. Derandomization may be achieved by using a plurality of peak detect-and-hold circuits electrically connected in parallel.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Patent:

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