Input circuit and semiconductor integrated circuit including...

Details Input circuit and semiconductor integrated circuit including... Input circuit and semiconductor integrated circuit including...

2011-06-28

2011-06-28

Lam, Tuan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C326S026000, C326S082000

Reexamination Certificate

active

07969207

ABSTRACT:
An input circuit, includes a first buffer circuit whose output is couple to an output signal terminal of the input circuit, and whose input is coupled to an input signal terminal of the input circuit, a second buffer circuit, a third buffer circuit, a first differential amplification circuit whose first input is coupled to a first external power source terminal, whose second input is coupled to an output of the second buffer circuit, and whose output is coupled to an input of the second buffer circuit, a second differential amplification circuit whose first input is coupled to a second external power source terminal, whose second input is coupled to an output of the third buffer circuit, and whose output is coupled to an input of the third buffer circuit, a first resistance whose one end is coupled to the output of the first differential amplification circuit, and whose another end is coupled between the input signal terminal of the input circuit and the input of the first buffer circuit, a second resistance whose one end is coupled to the output of the second differential amplification circuit, and whose another end is coupled between the input signal terminal of the input circuit and the input of the first buffer circuit.

REFERENCES:
patent: 6469543 (2002-10-01), Fulkerson
patent: 6515512 (2003-02-01), Chen
patent: 7126377 (2006-10-01), Brooks et al.
patent: 7482837 (2009-01-01), Fagan
patent: 7598780 (2009-10-01), Kibune

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