Title: Digital control circuit and method for small phase-lock amplifier
Application Number: 200510011984 Application Date: 2005.06.23
Publication Number: 1885043 Publication Date: 2006.12.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01R1/30,G01R1/00,H03D7/00,H03F21/00
Applicant(s) Name: Institute of Electronics, Chinese Academy of Scien Address: 100080
Inventor(s) Name: Gong Xiangpeng
Attorney & Agent: duan chengyun
Abstract:
     The invention relates to a digit control circuit technique, especially providing a digit contriol circuit of small-scale lock-in amplifier and relative method, wherein said method comprises: inputting tested signal and reference signal into multiplier, to generate middle signal; the middle signal via low-pass filter will generate output signal. And the circuit comprises: a programmed oscillator (1), a phase sensitive detector (3), a programmed phase shifter (4), and a low-pass filter (5).
Time: 10
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