On-focal-plane analog-to-digital conversion for current-mode ima

Details On-focal-plane analog-to-digital conversion for current-mode ima On-focal-plane analog-to-digital conversion for current-mode ima

1997-08-21

1999-03-23

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341144, 348292, H03M 112

Patent

active

058866590

ABSTRACT:
A current-mode analog-to-digital converter based on a current copier circuit with a constant bias current that is independent of the input signals. A second-order incremental .SIGMA.-.DELTA. conversion configuration is implemented. An array of such analog-to-digital converters can be integrated onto the focal plane of an imaging sensor array to achieve column-wise parallel analog-to-digital conversion.

REFERENCES:
patent: 5796361 (1998-08-01), Levinson
Jacques Robert & Philippe Deval, "A Second-Order High-Resolution Incremental A/D Converter with Offset and Charge Injection Compensation", Jun. 1988, IEEE J. Solid-State Circuits.

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