Digital to analog converter with precise linear output for both

Details Digital to analog converter with precise linear output for both Digital to analog converter with precise linear output for both

1992-02-28

1994-03-22

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341127, H03M 166

Patent

active

052968570

ABSTRACT:
A circuit and method for converting a digital number to an analog output signal, wherein the most significant bit or "sign" bit of the digital number is used for switching the accumulated currents of the other data bits to a chain of operational amplifiers employing feedback resistors for conversion into an output voltage of magnitude and sign corresponding to the input digital number. A decoding circuit and method enables the circuit to present an output voltage corresponding to the two's--complement of the input digital number.

REFERENCES:
patent: 3705359 (1972-12-01), Kappes
patent: 3924229 (1975-12-01), Liu
patent: 4410880 (1983-10-01), Zaborowski
"Analog to Digital Conversion Handbook", Analog Devices, Inc., 1986, pp. 207-211 and pp. 183-186.

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