Accession Number : ADD018569

Title :   Differential Preamplifier and Pre-Emphasis Network.

Descriptive Note : Patent, filed 7 Oct 94, patented 29 Apr 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hagerty, James D

Report Date : 29 Apr 1997

Pagination or Media Count : 7

Abstract : A preamplifier and pre-emphasis network is provided having a differential amplifier exhibiting common mode noise rejection. The preamplifier is particularly suited for use with a double-sided sensor element and it includes a double-sided, balanced calibration circuit. First and second variable gain buffers are joined to the differential amplifier for preventing current noise degradation at the differential amplifier inputs. A pre-emphasis network is further provided in conjunction with the variable gain buffers for providing balanced differential gain of the sensor element signal. Further elements of the invention provide for high and low pass filtering, and differential buffering of the output signal.

Descriptors :   *PREAMPLIFIERS, *PATENTS, BUFFERS, DIFFERENTIAL ANALYZERS, HIGH PASS FILTERS, LOW PASS FILTERS, NOISE(ELECTRICAL AND ELECTROMAGNETIC)

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE