Digital to analog converter

Details Digital to analog converter Digital to analog converter

1993-01-21

1995-03-07

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341121, H03M 168

Patent

active

053962451

ABSTRACT:
A segmented DAC is described in which the outputs of a pair of subword DAC circuits are summed by modulating the offset voltage of a differential buffer amplifier. Also described are various alternative DAC embodiments and an operational amplifier input stage in which modulation of the offset voltage of a differential amplifier responsive to a digital signal is accomplished using interpolation techniques for eliminating errors in linearity and monotonicity arising from component inaccuracies.

REFERENCES:
patent: 4866261 (1989-09-01), Pace
patent: 4873525 (1989-10-01), Iida
patent: 4918448 (1990-04-01), Hauviller et al.
patent: 4973979 (1990-11-01), Ikeda
patent: 4978959 (1990-12-01), Chong et al.
patent: 5212482 (1993-05-01), Okuyama
Data Sheet, "ADC0820 8-Bit High Speed .mu. PCompatible A/D Converter with Track/Hold Function," National Semiconductor Corporation 1988 Linear Databook, pp. 5-77 to 5-92, 1988.
Peter Holloway, "Data AcquisitionCircuits," 1984 IEEE International Solid-State Circuits Conference, pp. 66-67, Feb. 22, 1984.
John A. Schoeff, "Data Acquisition II," 1979 IEEE International Solid-State Circuits Conference, pp. 178-179 and pp. 292-293, Feb. 15, 1979.

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