Monotonic current/resistor digital-to-analog converter and metho

Details Monotonic current/resistor digital-to-analog converter and metho Monotonic current/resistor digital-to-analog converter and metho

1992-09-28

1993-09-07

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341154, H03M 166

Patent

active

052433471

ABSTRACT:
A digital-to-analog converter (10) performs two distinct conversions (12,59) of most significant bits (MSBs) and least significant bits (LSBs), respectively, of a digital input signal and uses the conversion results to provide an equivalent analog output. A plurality of current sources (34-36) is controlled by a thermometer code equivalent value of the most significant bits to provide a first input current to an output stage (22). A plurality of resistors (60-63) is controlled by a binary to `one of` equivalent of the least significant bits to provide a second input current to the output stage. The output stage (22) converts a combination of the first and second input currents to the analog output.

REFERENCES:
patent: 4281319 (1980-06-01), Roberts, Jr.
patent: 4338592 (1982-07-01), Wilensky
patent: 4410879 (1983-10-01), Gumm et al.
patent: 4618847 (1986-10-01), Ida et al.
patent: 4791406 (1988-12-01), Mehrgardt et al.
patent: 4857930 (1989-08-01), Lucas
patent: 5138317 (1992-08-01), Story

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