TO-CMOS buffers, comparators, folded cascode amplifiers, systems

Details TO-CMOS buffers, comparators, folded cascode amplifiers, systems TO-CMOS buffers, comparators, folded cascode amplifiers, systems

1991-01-24

1992-12-29

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340798, 307455, 307448, 330253, 330258, G09G 128

Patent

active

051755335

ABSTRACT:
An integrated circuit buffer includes an input differential amplifier with a first current source transistor and a network with second current source transistors and cascode transistors loading the differential amplifier. Further included is a network having transistors and a resistance connected to introduce bias voltages to the first and second current source transistors to set a common mode level for the cascode transistors wherein the bias voltages are generated by the network independently of said common mode level. The bias voltages establish a respective lesser current from the first current source transistor and a greater current from the second current source transistors connected to the cascode transistors. Other circuits, devices, systems and methods are also disclosed.

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patent: 4887048 (1989-12-01), Krenik et al.
patent: 4963834 (1990-10-01), Yukawa
patent: 5047664 (1991-09-01), Moyal
patent: 5056041 (1991-10-01), Guttag et al.

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