Patent ID: 7053671

Claim:
Differential-to-single-ended conversion circuitry that converts digital data that is represented as first and second complementary differential input signals to a single-ended signal that is referenced to ground, comprising: a positive power supply voltage terminal; a ground power supply voltage terminal; first, second, third, and fourth transistors each having a drain, source, and gate; a load having first and second terminals, wherein the first terminal of the load is connected to the positive power supply voltage terminal; and an output terminal at which the single-ended signal is provided, wherein: the gates of the first and second transistors respectively receive the first and second differential input data signals; the drains of the first and second transistors are connected to the positive power supply voltage terminal; the drains of the third and fourth transistors are respectively connected to the sources of the first and second transistors; the drain of the fourth transistor and the source of the second transistor are connected to the output terminal; the sources of the third and fourth transistors are connected to the ground power supply voltage terminal; the gates of the third and fourth transistors are connected to the drain of the third transistor and the source of the first transistor; and the second terminal of the load is connected to the gates of the third and fourth transistors, wherein the first and second transistors comprise p-channel metal-oxide-semiconductor transistors, wherein the third and fourth transistors comprise n-channel metal-oxide-semiconductor transistors, and wherein the load comprises an n-channel transistor having a gate and drain connected to the positive power supply voltage terminal and a source connected to the gates of the third and fourth transistors.