Enhanced performance CCD output amplifier

Details Enhanced performance CCD output amplifier Enhanced performance CCD output amplifier

1994-11-09

1996-12-31

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

348311, 330277, 250214A, H04N 5335, H03F 316

Patent

active

055898815

ABSTRACT:
A low-noise FET amplifier is connected to amplify output charge from a che coupled device (CCD). The FET has its gate connected to the CCD in common source configuration for receiving the output charge signal from the CCD and output an intermediate signal at a drain of the FET. An intermediate amplifier is connected to the drain of the FET for receiving the intermediate signal and outputting a low-noise signal functionally related to the output charge signal from the CCD. The amplifier is preferably connected as a virtual ground to the FET drain. The inherent shunt capacitance of the FET is selected to be at least equal to the sum of the remaining capacitances.

REFERENCES:
patent: 4412744 (1983-11-01), Lee et al.
patent: 4574249 (1986-03-01), Williams
patent: 4668971 (1987-05-01), Hynecek

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