Amplifiers – With semiconductor amplifying device – Including particular biasing arrangement
Reexamination Certificate
2006-01-03
2006-01-03
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including particular biasing arrangement
C330S288000
Reexamination Certificate
active
06982602
ABSTRACT:
A low voltage current mirror circuit (also referred to as a bias circuit) for establishing a plurality of bias voltages from an input current supplied to an input terminal of the circuit includes an input stage, a current stage connected to the input stage, a feedback stage connected to the current stage, a reference bias stage connected to the feedback stage and the current stage. The circuit establishes first and second bias voltages suitable for biasing current sources of a first type, and third and fourth bias voltages suitable for biasing current sources of a second type complementary to the first type. The bias voltages track the input current over variations in at least one of process, temperature and power supply voltage.
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Choe Henry
Sterne Kessler Goldstein & Fox P.L.L.C.
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