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Title: Method of pedestal and common-mode noise correction for switched-capacitor analog memories

A method and apparatus are disclosed for correcting common-mode noise and pedestal noise in a multichannel array of switched-capacitor analog memories wherein each analog memory is connected to an associated analog-to-digital converter. The apparatus comprises a single differential element in two different embodiments. In a first embodiment, the differential element is a reference analog memory connected to a buffer. In the second embodiment, the differential element is a reference analog memory connected to a reference analog-to-digital connected to an array of digital summing circuits. 4 figs.
Inventors:
Issue Date:
OSTI Identifier:
415753
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; SCA: 426000; 440000; PA: EDB-97:016128; SN: 97001714584
Patent Number(s):
US 5,590,104/A/
Application Number:
PAN: 8-316,193
Contract Number:
AC05-84OR21400
Resource Relation:
Other Information: PBD: 31 Dec 1996
Research Org:
Lockheed Martin Energy Syst Inc
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ANALOG SYSTEMS; MEMORY DEVICES; CORRECTIONS; NOISE; ANALOG-TO-DIGITAL CONVERTERS; DIGITAL CIRCUITS