Cmos digital to analog signal converter circuit

Details Cmos digital to analog signal converter circuit Cmos digital to analog signal converter circuit

H - Electricity

03

M

354/102

H03M 1/66 (2006.01) H03K 17/687 (2006.01)

Patent

CA 1312956

ABSTRACT A digital to analog converter comprising a differential amplifier formed of a pair of similar conductivity type field effect transistors, one transistor being connected to a load for driving the load in synchronism with a digital input signal, means for applying a reference voltage to the gate of the second transistor, and a third field effect transistor of conductivity type complementary to said one transistor, connected with its source-drain circuit in series with the source-drain circuit of the second transistor to a second reference voltage, and means for driving the gates of said one and third transistors together with said digital input signal, whereby the first and third transistors are synchronously and oppositely driven to conduct and cut off, thus ensuring substantially no current flow in the second transistor while the first transistor is conducting.

608742

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