Apparatus and method for producing an analog output signal from

Details Apparatus and method for producing an analog output signal from Apparatus and method for producing an analog output signal from

1993-06-28

1995-09-19

Hoff, Marc S.

Coded data generation or conversion

Converter compensation

341145, H03M 106

Patent

active

054519462

ABSTRACT:
A digital-to-analog converter (DAC, 300) utilizes a coarse DAC (306) and fine DAC (315) to produce an analog output signal having both low glitch energy and good linearity performance. The DAC (300) also uses an error table (312) to store correction data generated through a calibration procedure. Outputs (307, 311) from each DAC (306, 315) are summed to produce an analog output signal which exhibits better linearity than does the output (307) of the coarse DAC (306) alone.

REFERENCES:
patent: 4450433 (1984-05-01), Moriyama
patent: 4503421 (1985-03-01), Hareyama et al.
patent: 4523182 (1985-06-01), Harvey et al.
patent: 4885581 (1989-12-01), Sugawara et al.
patent: 4963870 (1990-10-01), Obinata
patent: 4967197 (1990-10-01), Peng
patent: 5153592 (1992-10-01), Fairchild et al.
patent: 5198814 (1993-03-01), Ogawara et al.

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