High speed high resolution analog/digital converter circuit

Details High speed high resolution analog/digital converter circuit High speed high resolution analog/digital converter circuit

1989-06-13

1991-03-12

Shoop, Jr., William M.

Coded data generation or conversion

Converter compensation

341156, 341141, H03M 106

Patent

active

049996240

ABSTRACT:
An analog-to-digital conversion circuit is provided with an analog subtractor having a subtract input coupled to the output of a digital-to-analog converter. An analog-to-digital converter is connected to the output of the analog subtractor. The A/D conversion circuit also includes a control device and a device for error correction coupled to the output of the A/D converter. The circuit aims to provide a higher resolution in two conversion steps and with reduced conversion times. The analog subtractor therefore comprises at least two differential amplifiers and one analog multiplexer with the outputs of the differential amplifiers connected to inputs of the analog multiplexer. A control input of the analog multiplexer is coupled to the control device.

REFERENCES:
patent: 3541315 (1970-11-01), Naydan et al.
patent: 4280196 (1981-07-01), Hornak et al.
patent: 4618850 (1986-10-01), Lenhoff, Jr.
patent: 4849759 (1989-07-01), Hughes
patent: 4855745 (1989-08-01), Smither

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