Amplification circuit and control method of amplification...

Details Amplification circuit and control method of amplification... Amplification circuit and control method of amplification...

2008-04-08

2008-04-08

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

C330S302000

Reexamination Certificate

active

11201417

ABSTRACT:
An amplification circuit connected with a lowpass filter, which reduces the time required for compensating the amplification characteristic and starting up at turning on the power supply, and a control method thereof are provided. An amplification circuit10, which operates in any one of the operation mode of ordinary operation mode MDN and special operation mode MDT, includes an amplifying section20, a lowpass filter30connected to the amplifying section20, and a lowpass filter setting section40that sets a cut-off frequency fc. In the case of an ordinary operation mode MDN, the cut-off frequency is set to an ordinary cut-off frequency fcn in which error in the output signal does not exceed an output allowable error as an allowable error, and in the case other than that, set to the side higher than the ordinary cut-off frequency fcn.

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