Dual mode source follower for low and high sensitivity...

Details Dual mode source follower for low and high sensitivity... Dual mode source follower for low and high sensitivity...

2008-12-10

2011-12-27

Legasse, Jr., Francis M (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S208100, C348S299000, C348S314000, C257S431000

Reexamination Certificate

active

08084730

ABSTRACT:
In certain embodiments, a unit cell is provided. The unit cell may include a high sensitivity path and a low sensitivity path. The high sensitivity path may include a first transistor and a first switch. The first switch may couple an output node to the first transistor. The low sensitivity path may include a capacitor. A second switch may couple the high sensitivity path to the low sensitivity path. A third switch may couple the high sensitivity path and the low sensitivity path to a voltage node.

REFERENCES:
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patent: 5539206 (1996-07-01), Schimert
patent: 5628210 (1997-05-01), Mista et al.
patent: 5708263 (1998-01-01), Wong
patent: 5841126 (1998-11-01), Fossum et al.
patent: 2006/0164530 (2006-07-01), Frey, Jr.

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