(kicad_sch (version 20211123) (generator eeschema)

  (uuid eb91eb52-3351-442d-b23a-038cad3b3ca2)

  (paper "A4")

  (lib_symbols
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      (property "Reference" "J" (id 0) (at 0 5.08 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "Conn_01x04_Female" (id 1) (at 0 -7.62 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (id 2) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "connector" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/)" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "Connector*:*_1x??_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "Conn_01x04_Female_1_1"
        (arc (start 0 -4.572) (mid -0.508 -5.08) (end 0 -5.588)
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (arc (start 0 -2.032) (mid -0.508 -2.54) (end 0 -3.048)
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -1.27 -5.08)
            (xy -0.508 -5.08)
          )
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -1.27 -2.54)
            (xy -0.508 -2.54)
          )
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -1.27 0)
            (xy -0.508 0)
          )
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -1.27 2.54)
            (xy -0.508 2.54)
          )
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (arc (start 0 0.508) (mid -0.508 0) (end 0 -0.508)
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (arc (start 0 3.048) (mid -0.508 2.54) (end 0 2.032)
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (pin passive line (at -5.08 2.54 0) (length 3.81)
          (name "Pin_1" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at -5.08 0 0) (length 3.81)
          (name "Pin_2" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at -5.08 -2.54 0) (length 3.81)
          (name "Pin_3" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at -5.08 -5.08 0) (length 3.81)
          (name "Pin_4" (effects (font (size 1.27 1.27))))
          (number "4" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:C" (pin_numbers hide) (pin_names (offset 0.254)) (in_bom yes) (on_board yes)
      (property "Reference" "C" (id 0) (at 0.635 2.54 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Value" "C" (id 1) (at 0.635 -2.54 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Footprint" "" (id 2) (at 0.9652 -3.81 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "cap capacitor" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Unpolarized capacitor" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "C_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "C_0_1"
        (polyline
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            (xy 2.032 -0.762)
          )
          (stroke (width 0.508) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -2.032 0.762)
            (xy 2.032 0.762)
          )
          (stroke (width 0.508) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "C_1_1"
        (pin passive line (at 0 3.81 270) (length 2.794)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 0 -3.81 90) (length 2.794)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:R" (pin_numbers hide) (pin_names (offset 0)) (in_bom yes) (on_board yes)
      (property "Reference" "R" (id 0) (at 2.032 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "R" (id 1) (at 0 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (id 2) (at -1.778 0 90)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "R res resistor" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Resistor" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "R_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "R_0_1"
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          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "R_1_1"
        (pin passive line (at 0 3.81 270) (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 0 -3.81 90) (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "max:MAX4468EKA+" (pin_names (offset 0.254)) (in_bom yes) (on_board yes)
      (property "Reference" "U" (id 0) (at 35.56 10.16 0)
        (effects (font (size 1.524 1.524)))
      )
      (property "Value" "MAX4468EKA+" (id 1) (at 35.56 7.62 0)
        (effects (font (size 1.524 1.524)))
      )
      (property "Footprint" "21-0078H_MXM" (id 2) (at 35.56 6.096 0)
        (effects (font (size 1.524 1.524)) hide)
      )
      (property "Datasheet" "" (id 3) (at 0 0 0)
        (effects (font (size 1.524 1.524)))
      )
      (property "ki_locked" "" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "ki_fp_filters" "21-0078H_MXM 21-0078H_MXM-M 21-0078H_MXM-L" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "MAX4468EKA+_1_1"
        (polyline
          (pts
            (xy 7.62 -12.7)
            (xy 63.5 -12.7)
          )
          (stroke (width 0.127) (type default) (color 0 0 0 0))
          (fill (type none))
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        (polyline
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          (stroke (width 0.127) (type default) (color 0 0 0 0))
          (fill (type none))
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          )
          (stroke (width 0.127) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (pin power_in line (at 0 0 0) (length 7.62)
          (name "GND" (effects (font (size 1.4986 1.4986))))
          (number "1" (effects (font (size 1.4986 1.4986))))
        )
        (pin input line (at 0 -2.54 0) (length 7.62)
          (name "IN+" (effects (font (size 1.4986 1.4986))))
          (number "2" (effects (font (size 1.4986 1.4986))))
        )
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          (number "3" (effects (font (size 1.4986 1.4986))))
        )
        (pin output line (at 0 -7.62 0) (length 7.62)
          (name "MIC_BIAS" (effects (font (size 1.4986 1.4986))))
          (number "4" (effects (font (size 1.4986 1.4986))))
        )
        (pin no_connect line (at 71.12 -7.62 180) (length 7.62)
          (name "NC" (effects (font (size 1.4986 1.4986))))
          (number "5" (effects (font (size 1.4986 1.4986))))
        )
        (pin input line (at 71.12 -5.08 180) (length 7.62)
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          (number "6" (effects (font (size 1.4986 1.4986))))
        )
        (pin power_in line (at 71.12 -2.54 180) (length 7.62)
          (name "VCC" (effects (font (size 1.4986 1.4986))))
          (number "7" (effects (font (size 1.4986 1.4986))))
        )
        (pin output line (at 71.12 0 180) (length 7.62)
          (name "OUT" (effects (font (size 1.4986 1.4986))))
          (number "8" (effects (font (size 1.4986 1.4986))))
        )
      )
    )
    (symbol "power:Earth" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
      (property "Reference" "#PWR" (id 0) (at 0 -6.35 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Value" "Earth" (id 1) (at 0 -3.81 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Footprint" "" (id 2) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "power-flag ground gnd" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Power symbol creates a global label with name \"Earth\"" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
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        (polyline
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          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
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        (polyline
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      )
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          (number "1" (effects (font (size 1.27 1.27))))
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  (junction (at 41.91 77.47) (diameter 0) (color 0 0 0 0)
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