LM 13600 Voltage controled low pass filter

Discussion in 'Homework Help' started by Stanislav Maťa, Jan 5, 2016.

  1. Stanislav Maťa

    Thread Starter New Member

    Jan 5, 2016
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    I have homework to do LM13600 Voltage controlled low pass filter. I draw circuit in microcap and i think i have it correct. But in simulation i have strange data. Can you help me? :) I up circuit and image with simulation.
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    Can you post your schematic as a .png or .jpg file?
    I can not read the .cir file.

    Here is the low-pass filter schematic from the datasheet:

    LM13600_low_pass_filter.png

    Bertus
     
  3. Stanislav Maťa

    Thread Starter New Member

    Jan 5, 2016
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    0
    Yep here is it... :)
    I do this circuit according your schematic that you post.
     
  4. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    That is odd. Your schematic shows a chip with 12 pins.
    The LM13600 has 16 pins.

    LM13600_pins.png

    Are you sure you are using the correct chip.

    Bertus
     
  5. Stanislav Maťa

    Thread Starter New Member

    Jan 5, 2016
    3
    0
    Yes its correct, because you are using on low pass only one half of chip. Its a second chip on the picture.. :)
     
  6. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    You have the bias on pin 5 in stead of pin 1.

    Bertus
     
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