Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-12-26
2006-12-26
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S269000
Reexamination Certificate
active
07154332
ABSTRACT:
A differential amplifier includes a differential amplifying stage and an output amplifying stage. The output amplifying stage includes a first transistor for pull-up, a second transistor for pull-down, a capacitor element, and switches. The first transistor for pull-up is connected across an output terminal and a high potential side power supply VDD and has a control terminal to which is connected a first differential output. The second transistor for pull-down is connected across the output terminal and a low potential side power supply VSS and has a control terminal to which is connected a second differential output. The switches interchangeably connect the capacitor element across the output terminal and the control terminal of the first transistor for pull-up or across the output terminal and the control terminal of the second transistor for pull-down.
REFERENCES:
patent: 5311145 (1994-05-01), Huijsing et al.
patent: 6107883 (2000-08-01), Xu
patent: 6208208 (2001-03-01), Komatsu et al.
patent: 6911858 (2005-06-01), Mori
patent: 6-326529 (1994-11-01), None
patent: 2001-156559 (2001-06-01), None
Analog/Digital Hybrid System LSI (low voltage low power dissipation circuit technology), Baihuukan, p. 253.
Choe Henry
Nec Corporation
Nec Electronics Corporation
Young & Thompson
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