Complementary FET digital to analog converter

Details Complementary FET digital to analog converter Complementary FET digital to analog converter

1974-10-18

1976-10-05

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, H03K 1302

Patent

active

039848302

ABSTRACT:
A D/A conversion circuit has each branch of its resistive binary scaling network energized by a switchable network. Each switchable network employs the internal current paths of an Integrated Circuit (I.C.) solid state device, such as a Complementary-Metal-Oxide Semiconductor-Field-Effect-Transistor (CMOSFET) device, which provides complementary switching action. Each switchable network also employs a Metal-Silicon (M-S) diode, which provides clamping and diode switching actions. By a combination of I.C. device and M-S diode device actions, the following features are achieved in a single circuit: (A) high accuracies, (B) fast setting times and (C) low power consumption. Also disclosed is a cooperating variable D/A reference potential source which achieves temperature compensation.

REFERENCES:
patent: 3307173 (1967-02-01), Popodi et al.
patent: 3355670 (1967-11-01), Pastoriza
patent: 3462757 (1969-08-01), Brown
patent: 3544994 (1970-12-01), Hanson et al.
patent: 3611353 (1971-10-01), Shipp
"Electronics" Sept. 29, 1969, pp. 50-51.

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