Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-12-25
2007-12-25
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S541000, C330S288000
Reexamination Certificate
active
11061619
ABSTRACT:
A current mirror circuit includes a first transistor having a source node connected to a reference potential, a second transistor having a source node coupled to a drain node of the first transistor and a gate node connected to a first predetermined potential, an inverted amplification circuit having a non-inverted input node coupled to a drain node of the second transistor, an inverted input node coupled to a second predetermined potential, and an output node coupled to a gate node of the first transistor, a third transistor having a gate node connected to a potential substantially equal to a potential of the gate node of the first transistor, and a fourth transistor having a gate node connected to a potential substantially equal to a potential of the gate node of the second transistor.
REFERENCES:
patent: 4588941 (1986-05-01), Kerth et al.
patent: 5087891 (1992-02-01), Cytera
patent: 6313692 (2001-11-01), Pease
patent: 6377085 (2002-04-01), Giuroiu
Joseph N. Babanezhad et al., “A Programmable Gain/Loss Circuit,” IEEE Journal of Solid-State Circuits, vol. SC-22, No. 6, Dec. 1987, pp. 1082-1090.
Arent & Fox LLP
Wells Kenneth B.
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