Level shift circuit

Details Level shift circuit Level shift circuit

2009-10-23

2011-12-27

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S062000, C326S081000

Reexamination Certificate

active

08085078

ABSTRACT:
A level shift circuit includes a first resistor with one end connected to GND, a first transistor with a drain and a gate connected to the other end of the first resistor, and a source connected to a first power supply, a second transistor with a source connected to the first power supply, and a gate connected to the drain and the gate of the first transistor, a second resistor with one end connected to a drain of the second transistor, a third transistor with a source connected to the other end of the second resistor, and a gate connected to an input terminal, a first current source connected between a second power supply and a drain of the third transistor; and a fourth transistor connected between an output terminal and the first power supply with a gate connected to the drain of the second transistor.

REFERENCES:
patent: 6316971 (2001-11-01), Ohashi
patent: 6359494 (2002-03-01), Kanda et al.
patent: 7239182 (2007-07-01), Fukazawa et al.
patent: 7274218 (2007-09-01), Sommer
patent: 7560972 (2009-07-01), Tiew et al.
patent: 2953006 (1999-07-01), None
patent: 3319406 (2002-06-01), None

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