Sense amplifier for high-density imaging array

Details Sense amplifier for high-density imaging array Sense amplifier for high-density imaging array

1997-05-14

2000-08-01

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

327 52, 257292, H04N 314, H04N 5335, G01R 1900, H01L 31062

Patent

active

06097432&

ABSTRACT:
A sense amplifier comprises an input node and an output node. An input transistor has a gate connected to the input node, a source connected to a first supply voltage rail, and a drain. A cascode transistor has a gate connected to a cascode node, a source connected to the drain of the input transistor, and a drain connected to the output node. A load transistor has a gate connected to a bias node, a drain connected to the output node, and a source connected to a second supply voltage rail. The gates of the cascode transistor and the load transistor are biased such that the input transistor and the cascode transistor are operated near their threshold and the load transistor is operated above threshold. In a presently preferred embodiment of the present invention, the input transistor and the cascode transistor of the sense amplifier are wide and short, such that they operate in below threshold, whereas the load transistor is made long and relatively narrow, so that it operates above threshold.

REFERENCES:
patent: Re34309 (1993-07-01), Tanaka et al.
patent: 4634886 (1987-01-01), Hatanaka et al.
patent: 4652766 (1987-03-01), Wang et al.
patent: 4682236 (1987-07-01), Wang et al.
patent: 4683580 (1987-07-01), Matsunaga
patent: 4734776 (1988-03-01), Wang et al.
patent: 4794443 (1988-12-01), Tanaka et al.
patent: 4809075 (1989-02-01), Akimoto et al.
patent: 4831454 (1989-05-01), Tanaka et al.
patent: 4835404 (1989-05-01), Sugawa et al.
patent: 4902886 (1990-02-01), Smisko
patent: 4962412 (1990-10-01), Shinohara et al.
patent: 5060042 (1991-10-01), Shinohara et al.
patent: 5097305 (1992-03-01), Mead et al.
patent: 5101252 (1992-03-01), Matsumoto
patent: 5113254 (1992-05-01), Kanno et al.
patent: 5216510 (1993-06-01), Amingual et al.
patent: 5245201 (1993-09-01), Kozuka et al.
patent: 5260592 (1993-11-01), Mead et al.
patent: 5283428 (1994-02-01), Morishita et al.
patent: 5324958 (1994-06-01), Mead et al.
patent: 5335008 (1994-08-01), Hamasaki
patent: 5335088 (1994-08-01), Mamashi et al.
patent: 5345266 (1994-09-01), Denyer
patent: 5386108 (1995-01-01), Arikawa et al.
patent: 5401952 (1995-03-01), Sugawa
patent: 5512750 (1996-04-01), Yanka et al.
patent: 5557121 (1996-09-01), Kozuka et al.
patent: 5591960 (1997-01-01), Furukawa et al.
patent: 5598023 (1997-01-01), Matsumoto

Affiliated with

Also associated with

Rating

Sense amplifier for high-density imaging array does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sense amplifier for high-density imaging array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sense amplifier for high-density imaging array will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-668941