Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2007-03-20
2007-03-20
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S065000, C327S560000, C330S257000, C330S261000
Reexamination Certificate
active
10191173
ABSTRACT:
An operational amplifier has a bias circuit, a differential amplifier, an output stage, and a feed forward circuit. The bias circuit provides a reference. The differential amplifier is coupled to a pair of input terminals and provides a differential output based on the first and second inputs. The output stage responds to the reference and to the differential output so as to supply a current to an output terminal. The feed forward circuit responds to the differential output in order to increase and decrease current to the output terminal. As a result, the feed forward circuit extends the dynamic range of the operational amplifier.
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Paul R. Gray et al., “MOS Operational Amplifier Design—A Tutorial Overview”, IEEE Journal of Solid-State Circuits, vol. SC-17, No. 6, Dec. 1982, pp. 969-982.
Honeywell International , Inc.
Lam Tuan T.
McDonnell Boehnen & Hulbert & Berghoff LLP
Nguyen Hiep
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