Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2007-01-30
2008-12-02
Nguyen, Linh V (Department: 2819)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S250000, C330S260000, C330S261000
Reexamination Certificate
active
07459975
ABSTRACT:
An amplifier comprises an input circuit that receives an input to the amplifier. A start-up circuit communicates with the input circuit, generates a start-up signal, and turns off the start-up signal when an output of the amplifier reaches a threshold voltage. The start-up circuit includes a first transistor having first and second terminals and a base terminal and a second transistor having first and second terminals and a base terminal. The base terminals of the first and second transistors receive a bias input, the first terminals of the first and second transistors communicate with each other and with a first current source, and the second terminals of the first and second transistors communicate with the input circuit.
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Cui Donghong
Song Yonghua
Marvell International Ltd.
Nguyen Linh V
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