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Transducer circuit coupled to a control unit through a cable

  • US 7,583,562 B2
  • Filed: 11/14/2006
  • Issued: 09/01/2009
  • Est. Priority Date: 11/14/2005
  • Status: Expired due to Fees
First Claim
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1. A transducer circuit coupled to a control unit via a cable, comprising:

  • a transducer component;

    a control port for connecting to the cable;

    a data port;

    a modulator having an input port and an output port, said input port being coupled to said data port for receiving a data signal; and

    a drive circuit coupled to said transducer component, the drive circuit comprising;

    an input-output stage coupled to said control port, andan output stage coupled to the output port of said modulator for outputting a modulated signal to the control unit corresponding to said received data signal,wherein said modulator comprises a pulse amplitude modulator and converts said data signal into a pulse amplitude modulated signal for the control unit.

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