High dynamic range dual mode charge transimpedance...

Details High dynamic range dual mode charge transimpedance... High dynamic range dual mode charge transimpedance...

2004-02-17

2009-02-17

Aggarwal, Yogesh (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C250S208100

Reexamination Certificate

active

07492399

ABSTRACT:
Disclosed is a High Dynamic Range Dual Mode (HDR-DM) input circuit unit cell (10) for use with an infrared (IR) radiation detector (D1). The readout circuit unit cell includes a plurality of transistors (M1, M2, M3and M4), switches (S1, S2and S3), and capacitances (Cfb, Cbland CSH) that are controllably coupled together to form, in a first mode of operation below an illumination level threshold, a CTIA input circuit (12), and to form, in a second mode of operation above the illumination level threshold, a lower gain SFD input circuit (14).

REFERENCES:
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patent: 4786831 (1988-11-01), Morse et al.
patent: 5083016 (1992-01-01), Wyles et al.
patent: RE34908 (1995-04-01), Wyles et al.
patent: 6727946 (2004-04-01), Zhao et al.
patent: 6909126 (2005-06-01), Janesick
patent: 2004/0079977 (2004-04-01), Ying et al.

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