<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="17" y1="21" x2="29" y2="21" width="0" layer="20"/>
<wire x1="29" y1="21" x2="29" y2="69.1" width="0" layer="20"/>
<wire x1="29" y1="69.1" x2="17" y2="69.1" width="0" layer="20"/>
<wire x1="17" y1="69.1" x2="17" y2="21" width="0" layer="20"/>
</plain>
<libraries>
<library name="burr-brown">
<description>&lt;b&gt;Burr-Brown Components&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="SO08">
<description>&lt;b&gt;Small Outline Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="adafruit">
<packages>
<package name="TOPHEADPHONE">
</package>
<package name="P120KGP">
</package>
<package name="FCIMICROUSB">
</package>
<package name="SOT23-6">
</package>
<package name="C1206">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="CT7343">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip
tantalum</description>
</package>
<package name="R1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="KYCONSMDUSB">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="OPA" library="burr-brown" package="SO08" value="OPA2130U">
<attribute name="OC_NEWARK" value="35C1841"/>
<attribute name="MPN" value="OPA2130UA"/>
<attribute name="MF" value="TEXAS INSTRUMENTS"/>
<attribute name="OC_FARNELL" value="1459554"/>
</element>
<element name="INPUT" library="adafruit" package="TOPHEADPHONE" value="TOPHEADPHONE"/>
<element name="OUTPUT" library="adafruit" package="TOPHEADPHONE" value="TOPHEADPHONE"/>
<element name="U$3" library="adafruit" package="P120KGP" value="P120KGP"/>
<element name="U$5" library="adafruit" package="FCIMICROUSB" value="FCIMICROUSB"/>
<element name="V-" library="adafruit" package="SOT23-6" value="LM2664">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="adafruit" package="C1206" value=""/>
<element name="C2" library="adafruit" package="C1206" value=""/>
<element name="C3" library="adafruit" package="CT7343" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="adafruit" package="R1206" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U$1" library="adafruit" package="KYCONSMDUSB" value="KYCONSMDUSB"/>
</elements>
<signals>
<signal name="GND">
<contactref element="U$5" pad="GND"/>
<contactref element="U$5" pad="SHIELD1"/>
<contactref element="U$5" pad="SHIELD2"/>
<contactref element="U$1" pad="GND"/>
<contactref element="U$1" pad="SHIELD1"/>
<contactref element="U$1" pad="SHIELD2"/>
<contactref element="OUTPUT" pad="GND"/>
<contactref element="INPUT" pad="GND"/>
<contactref element="U$3" pad="A3"/>
<contactref element="U$3" pad="B3"/>
<contactref element="V-" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="C3" pad="-"/>
</signal>
<signal name="N$3">
<contactref element="OPA" pad="1"/>
<contactref element="OUTPUT" pad="RIGHT"/>
<contactref element="U$3" pad="B1"/>
</signal>
<signal name="N$4">
<contactref element="OPA" pad="2"/>
<contactref element="U$3" pad="B2"/>
</signal>
<signal name="N$5">
<contactref element="OPA" pad="6"/>
<contactref element="U$3" pad="A2"/>
</signal>
<signal name="N$6">
<contactref element="OPA" pad="7"/>
<contactref element="OUTPUT" pad="LEFT"/>
<contactref element="U$3" pad="A1"/>
</signal>
<signal name="N$1">
<contactref element="OPA" pad="3"/>
<contactref element="INPUT" pad="RIGHT"/>
</signal>
<signal name="N$7">
<contactref element="OPA" pad="5"/>
<contactref element="INPUT" pad="LEFT"/>
</signal>
<signal name="N$9">
<contactref element="U$5" pad="DATA-"/>
<contactref element="U$1" pad="-DATA"/>
</signal>
<signal name="N$10">
<contactref element="U$5" pad="+DATA"/>
<contactref element="U$1" pad="+DATA"/>
</signal>
<signal name="N$2">
<contactref element="U$5" pad="VCC"/>
<contactref element="R1" pad="1"/>
<contactref element="U$1" pad="VCC"/>
</signal>
<signal name="N$11">
<contactref element="V-" pad="2"/>
<contactref element="OPA" pad="4"/>
<contactref element="C2" pad="2"/>
</signal>
<signal name="N$12">
<contactref element="V-" pad="3"/>
<contactref element="C1" pad="1"/>
</signal>
<signal name="N$13">
<contactref element="V-" pad="6"/>
<contactref element="C1" pad="2"/>
</signal>
<signal name="5VCLEAN">
<contactref element="V-" pad="5"/>
<contactref element="V-" pad="4"/>
<contactref element="C3" pad="+"/>
<contactref element="R1" pad="2"/>
<contactref element="OPA" pad="8"/>
</signal>
<signal name="N$14">
</signal>
<signal name="N$8">
</signal>
</signals>
</board>
</drawing>
</eagle>
