Conversion circuit of orthogonal sine signal

Conversion circuit of orthogonal sine signal

  • CN 101,674,048 B
  • Filed: 08/04/2009
  • Issued: 03/05/2014
  • Est. Priority Date: 08/04/2009
  • Status: Active Grant
First Claim
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1. a conversion circuit of orthogonal sine signal, is characterized in that, described change-over circuit comprises SH module (101), comparator (102) and control module (103),Described SH module (101) is sampled to the orthogonal sine signal receiving from outside and is amplified summation, exports a voltage signal (Vout);

  • Described comparator (102) receives from the voltage signal (Vout) of described SH module (101) output, and exports a comparison signal;

    Described control module (103) receives outside clock signal (clk), and according to the comparison signal receiving from described comparator (102), to described SH module (101) output control signal, make described SH module (101) adjust gain amplifier according to this control signal, and be operated in phase place judgment model or mode changeover signalDescribed SH module (101) comprises a SC network (201) and holding circuit (202),A described SC network (201) receives from the control signal of described control module (103) output, within half clock cycle of sample phase, described orthogonal sine signal is sampled, and to described holding circuit (202), export the first sampled signal within half clock cycle that keeps the stage;

    Described holding circuit (202) receives from the control signal of described control module (103) output, and the described voltage signal (Vout) of output.

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