Analog to digital converter calibration system and method of ope

Details Analog to digital converter calibration system and method of ope Analog to digital converter calibration system and method of ope

1991-12-30

1993-11-30

Hoff, Marc S.

Coded data generation or conversion

Converter calibration or testing

341118, H03M 110

Patent

active

052669513

ABSTRACT:
A calibration circuit includes a plurality of signal sources each of said signal sources having an output port and providing a signal having a known phase and a signal combiner circuit having a plurality of input ports and an output port with each of said input ports being coupled to a corresponding one of said signal source output ports. The calibration circuit further includes a switch having a common port and at least one branch port, said branch port being coupled to said output port of said signal combiner circuit and an analog to digital converter circuit having an input port coupled to the common port and an output port. The calibration circuit further includes a central processing unit coupled to the output port of said analog to digital converter and a summing circuit having a first input port coupled to said central processing unit, a second input port coupled to the output port of said analog to digital converter circuit and an output port.

REFERENCES:
patent: 4364027 (1982-12-01), Marooka
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patent: 4908621 (1990-03-01), Polonio et al.
patent: 4947168 (1990-08-01), Myers
patent: 4973974 (1990-11-01), Suzuki
patent: 5047772 (1991-09-01), Ribner
A Phase-Plane Approach to the Compensation of High-Speed Analog-to-Digital Converters, T. A. Rebold & F. H. Irons, IEEE Circuits & Systems, 1987, pp. 455-458.
Comparison of State-of-the-Art Analog-to-Digital Converters, N. W. Spencer, Mar. 4, 1988, Project Report AST-4.

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