Successive approximation analog-to-digital converter using balan

Details Successive approximation analog-to-digital converter using balan Successive approximation analog-to-digital converter using balan

1996-11-07

1998-08-11

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

H03M 138

Patent

active

057933227

ABSTRACT:
An analog-to-digital converter for on-chip focal-plane image sensor applications. The analog-to-digital converter utilizes charge integrating amplifiers in a charge balancing architecture to implement successive approximation analog-to-digital conversion. This design requires minimal chip area and has high speed and low power dissipation for operation in the 2-10 bit range. The invention is particularly well suited to CMOS on-chip applications requiring many analog-to-digital converters, such as column-parallel focal-plane architectures.

REFERENCES:
patent: 4647903 (1987-03-01), Ryu
patent: 5084704 (1992-01-01), Parrish
patent: 5247299 (1993-09-01), Lim et al.
Fossum, E.R., Zhou, Z. and Pain, B., "Successive Approximation ADC for Focal-Plane Applications Using Balanced Charge Integrating Amplifiers" SPIE, 1994.
Fossum E.R. and Zhou, Z., "Capacitively Coupled Successive Approximation Ultra Low Poser ADC for Focal-Plane Applications", SPIE, 1994.
Pain, B. and Fossum, E.R., "Approaches and analysis for on-focal-analog-to-digital conversion", SPIE vol. 2226, 1994 (Jun.).

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