High-accuracy A/D converter

Details High-accuracy A/D converter High-accuracy A/D converter

1988-10-05

1990-05-08

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341163, H03M 100

Patent

active

049242245

ABSTRACT:
An A/D converter comprises a D/A conversion circuit, a sample-holding circuit which samples and holds the output signal of the D/A conversion circuit, a substraction circuit which performs subtraction for the output signal of the D/A conversion circuit and the output signal of the sample-holding circuit, a subtracting-amplifying circuit which performs subtraction for the output signal of the substraction circuit and the input analog signal and amplifies the result of subtraction, a switch circuit which blocks the input analog signal to the subtracting-amplifying circuit, and an A/D conversion circuit which performs A/D conversion selectively for the input analog signal or the output signal of the subtracting-amplifying circuit.

REFERENCES:
patent: 4734678 (1988-03-01), Take et al.
Eugene Hnatek, "A User's Handbook of D/A and A/D Converters", 1976, pp. 369-372, 383-384.

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