Amplifiers – With semiconductor amplifying device – Including current mirror amplifier
Reexamination Certificate
2006-06-16
2008-11-11
Pascal, Robert J. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including current mirror amplifier
Reexamination Certificate
active
07449955
ABSTRACT:
A chain-chopping current mirror and a method for stabilizing output currents are disclosed. The current mirror includes multiple output nodes, a bias source unit, multiple current mirroring units and multiple switch components. The bias source unit provides a reference bias according to the received current. Each of the current mirroring units outputs an output current according to the reference bias. The control terminal of each the switch component receives a clock signal and determines whether the first terminal thereof is coupled with the second terminal or the third terminal thereof according to the clock signal, wherein the first terminal of the ithswitch component is coupled with the output terminal of the ithcurrent mirroring unit, the second terminal thereof is coupled with the ithoutput node and the third terminal thereof is coupled with the (i+1)thoutput node, where i is a natural number.
REFERENCES:
patent: 4408190 (1983-10-01), Nagano
patent: 6181206 (2001-01-01), Palmisano et al.
patent: 6714080 (2004-03-01), Burns
patent: 6958719 (2005-10-01), Moon
Jianq Chyun IP Office
Pascal Robert J.
Silicon Touch Technology Inc.
Wong Alan
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