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Recent content by MarkCSI

  1. M

    LM148J Need Replacement

    We are using the LM148J but need better input offset voltage. Needs to be mil temp, same pinout. Any suggestions? Thanks, Mark
  2. M

    [SOLVED] PCAD 2004 Heterogeneous Symbol Question

    Does anyone know how to create the symbol for a Gate that doesn't start at pin 1? I am looking in the "PCAD Lib Exec User Guide, page 86, and it shows the 4 symbols used in a SN54HC7404. These symbols do not have sequential pin numbers that start at 1. The tutorial claims that these were...
  3. M

    Problem with LPF on Output of Class D Amp

    F+ and F- are the output of the MAX9737 Eval board. I have attached the schematic. This problem shows up only with light loads. If I put the 8Ω load on the output of the Eval board, it looks fine (other than a little 300kHz remnant of the class d switching). I have not checked with loads...
  4. M

    Problem with LPF on Output of Class D Amp

    Hi, I am trying to use a Class D Amp to drive a non-audio application (360 - 12000Hz, load will vary), and am getting distortion on the output when no load or lighter load is present. The basic flow is: Class D Amp -> LPF -> Step Up Xfmr -> Output I am using the LPF in the Eval kit...

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