Input buffer circuit, and semiconductor apparatus having the...

Details Input buffer circuit, and semiconductor apparatus having the... Input buffer circuit, and semiconductor apparatus having the...

2006-06-13

2006-06-13

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S112000, C326S081000

Reexamination Certificate

active

07061297

ABSTRACT:
According to the present invention, an input buffer circuit comprises a first and a second buffer circuits operated at different first and second drive voltages and connected in turn, and an output potential control circuit is provided for carrying out a control so that, in spite of a voltage value of the first drive voltage, a threshold of an output potential of the first buffer circuit becomes a threshold of an input potential of the second buffer circuit. Further, the output potential control circuit is configured such that the first buffer circuit is constituted by a pair of complementary current mirror amplifiers, and comprises feedback control means for carrying out feedback-control to the generation of the output potential for the first buffer circuit on the basis of an output potential on a reference side of this current mirror amplifier.

REFERENCES:
patent: 6043699 (2000-03-01), Shimizu
patent: 6236255 (2001-05-01), Oguri
patent: 6242949 (2001-06-01), Wilford
patent: 6265896 (2001-07-01), Podlesny et al.
patent: 6373285 (2002-04-01), Konishi
patent: 06-021800 (1994-01-01), None

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