Current mode logic driver that employs a level shifting...

Details Current mode logic driver that employs a level shifting... Current mode logic driver that employs a level shifting...

2007-02-20

2007-02-20

Chang, Daniel D. (Department: 2819)

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Field-effect transistor

C326S127000, C327S066000

Reexamination Certificate

active

10445171

ABSTRACT:
Circuit for providing drive signal waveforms. The circuit includes a current mode logic (CML) driver that includes a common mode voltage (VCM), an output node and a complementary output node. The circuit also has a level shifting mechanism that is coupled to the CML driver. The level shifting mechanism adjusts the common mode voltage (VCM) by either drawing a level shifting current from the output node and the complementary output node or injecting a level shifting current into the output node and the complementary output node.

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“A Low Voltage, Rail-to-Rail, Class AB CMOS Amplifier With High Drive and Low Output Impedance Characteristics,” Gabriel A. Rincon-Mora and Richard Stair, IEEE Transactions on Circuits and Systems-II: Analog and Digital Signal Processing, vol. 48, No. 8, pp. 753 to 761, Aug. 2001.
“A Versatile 3.3/2.5/1.8-V I/O Driver Built in a 0.2-mm, 3.5-nm Tox, 1,8-V CMOS Technology,” Hector Sanchez,-Joshua Siegel, Carmine; Nicoletta, James P. Nissen and Jose Alvarez, IEEE Journal of Solid State Circuits, vol. 34, No. 11, pp. 1501 to 1511, Nov. 1999.

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