Title: Sine-wave generator with high precise frequency
Application Number: 200610039203 Application Date: 2006.03.30
Publication Number: 1852022 Publication Date: 2006.10.25
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03B25/00
Applicant(s) Name: Nanjing Aeronautic Address: 210016
Inventor(s) Name: Liu Chuang
Attorney & Agent: shen genshui
Abstract:
     This invention relates to a sine wave generator based on a general switch capacitance filter integrated chip, which utilizes an integrated band-pass switch capacitance filter, an outside adjustable clock or a crystal oscillator and an operation amplifier to compose a negative feed back circuit, in which, the clock circuit provides a clock signal of constant frequency to the switch capacitance band-pass filter, the output of which is connected with the input of the negative feed back circuit then to be cut in the input of the filter, which does not need any separated elements of capacitors or inductors to compose a sine-wave generator with accurate output frequency and high quality.
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