Two's complement digital to analog converter

Details Two's complement digital to analog converter Two's complement digital to analog converter

1997-01-10

1998-09-08

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341127, H03M 166

Patent

active

058050957

ABSTRACT:
A two's complement digital to analog converter (300) is for converting a two's complement binary value to an analog output current, and includes a control circuit (310) which generates controlled value bits, a digital to analog current converter (DACC) (320), and an augmenter (330). The DACC (320) generates a DACC analog current which is a portion of the analog output current and which has an absolute value which is related to the binary value of the controlled value bits. The augmenter (330), which is coupled to a most significant bit of the two's complement binary value, generates a portion of the analog output current by modifying the absolute value of the DACC analog current by a least significant bit current increment when the most significant bit indicates a negative value of the two's complement binary value.

REFERENCES:
patent: 3924229 (1975-12-01), Liu
patent: 4477808 (1984-10-01), Ichikawa
patent: 4924223 (1990-05-01), Okamoto
patent: 5296857 (1994-03-01), Carobolante
patent: 5425055 (1995-06-01), Blaker

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