Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2008-09-16
2008-09-16
Choe, Henry K (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S261000
Reexamination Certificate
active
11241874
ABSTRACT:
A differential input/differential output converter circuit. The circuit comprises differential complementary input modules each comprising cross-coupled devices for biasing current mirror masters to a condition that increases the operating speed in response to a transition in the differential input signals. Certain current mirror masters are biased to a strong threshold condition and other current mirror masters are biased to a weak threshold condition responsive to a state of the differential input signals. According to another embodiment, the converter circuit further comprises a boost circuit capacitively coupled to the converter circuit for providing further speed improvements.
REFERENCES:
patent: 6316998 (2001-11-01), Oikawa
patent: 6392485 (2002-05-01), Doi et al.
patent: 6778014 (2004-08-01), Rennig
Aemireddy Arvind R.
Gleason Jeffrey A.
Rabe Cameron Carroll
Wimmer Robert J.
Agere Systems Inc.
Choe Henry K
Priest & Goldstein PLLC
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