Digital-to-analog converting unit with improved linearity

Details Digital-to-analog converting unit with improved linearity Digital-to-analog converting unit with improved linearity

1991-10-15

1992-11-10

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

H03M 166

Patent

active

051628007

ABSTRACT:
A digital-to-analog converting unit decodes a digital input signal into a decoded signal, and selectively allows constant-current cells arranged in matrix to supply unit currents for producing an analog output signal, wherein a decoding circuit incorporated in the digital-to-analog converting unit sequentially selects the constant-current cells in such a manner that insufficient increment of current produced by one of the constant-current-cells cancels out excessive increment of current produced by another constant-current cell so that the analog output signal is improved in linearity.

REFERENCES:
patent: 4695826 (1987-09-01), Ando et al.
patent: 4859930 (1989-08-01), Schouwenaars et al.

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