Extended reference range, voltage-mode CMOS D/A converter

Details Extended reference range, voltage-mode CMOS D/A converter Extended reference range, voltage-mode CMOS D/A converter

1983-02-11

1985-12-10

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307297, 307579, 340347CC, H03K 1716, H03K 17693

Patent

active

045582424

ABSTRACT:
A CMOS D/A converter for use in a voltage-mode and having complementary-driven switch pairs for V.sub.ref and A.sub.gnd respectively. The "ON" gate voltage of the A.sub.gnd switch is adjusted in accordance with the value of V.sub.ref, to give switch V.sub.GS equality and therefore "ON" resistance matching with the V.sub.ref switch over a wide range of reference voltage. Circuits are shown for developing the A.sub.gnd gate voltage varying with V.sub.ref.

REFERENCES:
patent: 4267550 (1981-05-01), Cecil
patent: 4308467 (1981-12-01), Kolluri et al.
patent: 4338590 (1982-07-01), Connolly, Jr. et al.
patent: 4410880 (1983-10-01), Zaborowski
patent: 4464588 (1984-08-01), Wieser
patent: 4495425 (1985-01-01), McKenzie
Schade, Jr., "Voltage Matching Circuit for Ladder Network", RCA Tech. Notes, TN No. 1271, Princeton, NJ, Mar. 1981, pp. 1-3.

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