Single-supply digital-to-analog converter for control function g

Details Single-supply digital-to-analog converter for control function g Single-supply digital-to-analog converter for control function g

1990-01-30

1991-02-05

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341151, 341136, 341154, H03M 166

Patent

active

049909169

ABSTRACT:
A converter for producing the function V.sub.out =V.sub.bias =V.sub.swing (1-2D), in which a DAC is combined with an operational amplifier and (typically) three or four resistors. A function of the voltage V.sub.swing, or a current corresponding thereto, is applied to the reference voltage input terminal of the DAC. The variable D is the DAC's digital input code, expressed as a decimal or fraction in the range between 0 and 1. The DAC output provides a suitably scaled and signed signal which is added to or subtracted from the offset signal V.sub.bias to produce V.sub.out.

REFERENCES:
patent: 3548169 (1970-12-01), Togneri
patent: 4034365 (1977-07-01), Grandy
patent: 4635038 (1987-01-01), Wincn
patent: 4644325 (1987-02-01), Miller

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