The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2001
Filed:
Nov. 05, 1997
Applicant:
Inventors:
Assignee:
STMicroelectronics, Inc., Carrollton, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 3/14 ; H04N 9/64 ;
U.S. Cl.
CPC ...
H04N 3/14 ; H04N 9/64 ;
Abstract
A circuit technique to reduce the input capacitance line of a charge integrator is described. This approach is particularly tailored for embedded read-out circuits in solid-state integrated sensors. An integrated charge amplifier described herein includes a generic amplifier element and a high speed buffer which drives a metal shield placed underneath the input line. The metal shield therefore follows the potential of the input line and thereby reduces the capacitance between the input line and ground.