Charge amplifier for Mos imaging array and method of making same

Details Charge amplifier for Mos imaging array and method of making same Charge amplifier for Mos imaging array and method of making same

1997-06-10

1998-06-30

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

327581, 327365, H04N 5335

Patent

active

057741816

ABSTRACT:
A charge amplifier with DC offset cancelling for use in a pixel element of an MOS image sensor is disclosed. The charge amplifier can be manufactured using a standard CMOS single polycrystalline process, making it much more cost effective than prior art designs. The charge amplifier includes an operational amplifier, a source capacitor, a series capacitor, and a feedback capacitor. The source capacitor holds the input signal. The output of the operational amplifier provides the output signal. Switches control the routing of the signal flow from the source capacitor, the series capacitor, and the feedback capacitor.

REFERENCES:
patent: 3774052 (1973-11-01), McColain
patent: 4453090 (1984-06-01), Sempel
patent: 5130564 (1992-07-01), Sin
patent: 5544102 (1996-08-01), Tobita et al.
patent: 5714907 (1998-02-01), Bazes

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