<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="100" y2="0" width="0" layer="20"/>
<wire x1="100" y1="0" x2="100" y2="80" width="0" layer="20"/>
<wire x1="100" y1="80" x2="0" y2="80" width="0" layer="20"/>
<wire x1="0" y1="80" x2="0" y2="0" width="0" layer="20"/>
</plain>
<libraries>
<library name="con-molex">
<description>&lt;b&gt;Molex Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="22-23-2021">
<description>.100" (2.54mm) Center Headers - 2 Pin</description>
</package>
<package name="22-23-2031">
<description>.100" (2.54mm) Center Header - 3 Pin</description>
</package>
</packages>
</library>
<library name="rcl">
<packages>
<package name="C1206">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="CT3528">
<description>&lt;b&gt;TANTALUM CAPACITOR&lt;/b&gt;</description>
</package>
<package name="R1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="linear">
<description>&lt;b&gt;Linear Devices&lt;/b&gt;&lt;p&gt;
Operational amplifiers,  comparators, voltage regulators, ADCs, DACs, etc.&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 8&lt;/b&gt;&lt;br&gt;
NS Package M08A</description>
</package>
</packages>
</library>
<library name="transformer-pulse">
<description>&lt;b&gt;TRANSFORMERS FOR DIGITAL AUDIO DATA TRANSMISSION&lt;/b&gt;&lt;p&gt;
www.pulseeng.com</description>
<packages>
<package name="PE-65612">
<description>&lt;b&gt;TRANSFORMERS FOR DIGITAL AUDIO DATA TRANSMISSION&lt;/b&gt;&lt;p&gt;
Source: &lt;a href="http://ww2.pulseeng.com/products/datasheets/T601.pdf"&gt; Data sheet &lt;/a&gt;&lt;br&gt;
www.pulseeng.com</description>
</package>
</packages>
</library>
<library name="anyma-lib">
<description>10 point smd solder jumper</description>
<packages>
<package name="ALPS_RK09K111">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="AUDIO_IN" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="BP" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="C1" library="rcl" package="C1206" value="1u"/>
<element name="C10" library="rcl" package="C1206" value="100n"/>
<element name="C11" library="rcl" package="C1206" value="100n"/>
<element name="C12" library="rcl" package="C1206" value="100n"/>
<element name="C13" library="rcl" package="C1206" value="100n"/>
<element name="C14" library="rcl" package="C1206" value="100n"/>
<element name="C15" library="rcl" package="C1206" value="100n"/>
<element name="C16" library="rcl" package="C1206" value="100n"/>
<element name="C17" library="rcl" package="C1206" value="100n"/>
<element name="C2" library="rcl" package="C1206" value="47n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="rcl" package="C1206" value="47n"/>
<element name="C4" library="rcl" package="C1206" value="4n7"/>
<element name="C5" library="rcl" package="C1206" value="47n"/>
<element name="C6" library="rcl" package="CT3528" value="10u"/>
<element name="C7" library="rcl" package="CT3528" value="10u"/>
<element name="C8" library="rcl" package="C1206" value="4n7"/>
<element name="C9" library="rcl" package="C1206" value="4n7"/>
<element name="HP" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="IC1" library="linear" package="SO08" value="LM833D"/>
<element name="IC2" library="linear" package="SO08" value="LM833D"/>
<element name="IC3" library="linear" package="SO08" value="LM833D"/>
<element name="IC4" library="linear" package="SO08" value="LM833D"/>
<element name="LP" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="R1" library="rcl" package="R1206" value="2k2"/>
<element name="R10" library="rcl" package="R1206" value="20k"/>
<element name="R11" library="rcl" package="R1206" value="20k"/>
<element name="R12" library="rcl" package="R1206" value="20k"/>
<element name="R13" library="rcl" package="R1206" value="20k"/>
<element name="R14" library="rcl" package="R1206" value="20k"/>
<element name="R15" library="rcl" package="R1206" value="20k"/>
<element name="R17" library="rcl" package="R1206" value="75"/>
<element name="R18" library="rcl" package="R1206" value="75"/>
<element name="R19" library="rcl" package="R1206" value="75"/>
<element name="R2" library="rcl" package="R1206" value="20k"/>
<element name="R20" library="rcl" package="R1206" value="75"/>
<element name="R3" library="rcl" package="R1206" value="20k"/>
<element name="R4" library="rcl" package="R1206" value="20k"/>
<element name="R5" library="rcl" package="R1206" value="20k"/>
<element name="R6" library="rcl" package="R1206" value="20k"/>
<element name="R7" library="rcl" package="R1206" value="20k"/>
<element name="R8" library="rcl" package="R1206" value="20k"/>
<element name="R9" library="rcl" package="R1206" value="20k"/>
<element name="THRU" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="TR1" library="transformer-pulse" package="PE-65612" value="NTE1"/>
<element name="U$1" library="anyma-lib" package="ALPS_RK09K111" value="ALPS_RK09K111_HOHNE-FüSSE"/>
<element name="X1" library="con-molex" package="22-23-2031" value="22-23-2031">
<attribute name="OC_NEWARK" value="30C0862"/>
<attribute name="MPN" value="22-23-2031"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462950"/>
</element>
</elements>
<signals>
<signal name="+5V">
<contactref element="C6" pad="+"/>
<contactref element="X1" pad="3"/>
<contactref element="IC1" pad="8"/>
<contactref element="C10" pad="1"/>
<contactref element="C12" pad="1"/>
<contactref element="IC2" pad="8"/>
<contactref element="C14" pad="1"/>
<contactref element="IC3" pad="8"/>
<contactref element="C16" pad="1"/>
<contactref element="IC4" pad="8"/>
</signal>
<signal name="GND">
<contactref element="X1" pad="2"/>
<contactref element="C6" pad="-"/>
<contactref element="IC1" pad="3"/>
<contactref element="IC1" pad="5"/>
<contactref element="THRU" pad="2"/>
<contactref element="IC2" pad="3"/>
<contactref element="IC2" pad="5"/>
<contactref element="LP" pad="2"/>
<contactref element="IC3" pad="3"/>
<contactref element="IC4" pad="3"/>
<contactref element="IC3" pad="5"/>
<contactref element="IC4" pad="5"/>
<contactref element="BP" pad="2"/>
<contactref element="HP" pad="2"/>
<contactref element="C10" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="C12" pad="2"/>
<contactref element="C13" pad="2"/>
<contactref element="C14" pad="2"/>
<contactref element="C15" pad="2"/>
<contactref element="C16" pad="2"/>
<contactref element="C17" pad="2"/>
<contactref element="TR1" pad="4"/>
<contactref element="C7" pad="+"/>
</signal>
<signal name="-5V">
<contactref element="IC1" pad="4"/>
<contactref element="C11" pad="1"/>
<contactref element="C13" pad="1"/>
<contactref element="IC2" pad="4"/>
<contactref element="C15" pad="1"/>
<contactref element="IC3" pad="4"/>
<contactref element="C17" pad="1"/>
<contactref element="IC4" pad="4"/>
<contactref element="C7" pad="-"/>
<contactref element="X1" pad="1"/>
</signal>
<signal name="N$1">
<contactref element="AUDIO_IN" pad="2"/>
<contactref element="TR1" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="AUDIO_IN" pad="1"/>
<contactref element="TR1" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="TR1" pad="3"/>
<contactref element="R1" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="R1" pad="2"/>
<contactref element="IC1" pad="2"/>
<contactref element="U$1" pad="3"/>
</signal>
<signal name="N$5">
<contactref element="IC1" pad="1"/>
<contactref element="C1" pad="1"/>
<contactref element="U$1" pad="1"/>
<contactref element="U$1" pad="2"/>
</signal>
<signal name="N$6">
<contactref element="C1" pad="2"/>
<contactref element="R2" pad="1"/>
<contactref element="R4" pad="1"/>
<contactref element="R8" pad="1"/>
<contactref element="R12" pad="1"/>
</signal>
<signal name="N$7">
<contactref element="R2" pad="2"/>
<contactref element="R3" pad="1"/>
<contactref element="IC1" pad="6"/>
</signal>
<signal name="N$8">
<contactref element="IC1" pad="7"/>
<contactref element="R3" pad="2"/>
<contactref element="R17" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="R4" pad="2"/>
<contactref element="C2" pad="1"/>
<contactref element="R5" pad="1"/>
<contactref element="IC2" pad="2"/>
</signal>
<signal name="N$10">
<contactref element="C2" pad="2"/>
<contactref element="R6" pad="1"/>
<contactref element="IC2" pad="1"/>
<contactref element="R5" pad="2"/>
</signal>
<signal name="N$11">
<contactref element="R6" pad="2"/>
<contactref element="C3" pad="1"/>
<contactref element="R7" pad="1"/>
<contactref element="IC2" pad="6"/>
</signal>
<signal name="N$12">
<contactref element="IC2" pad="7"/>
<contactref element="R7" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="R18" pad="1"/>
</signal>
<signal name="N$13">
<contactref element="C5" pad="1"/>
<contactref element="R10" pad="2"/>
</signal>
<signal name="N$14">
<contactref element="R12" pad="2"/>
<contactref element="C8" pad="1"/>
</signal>
<signal name="N$15">
<contactref element="R8" pad="2"/>
<contactref element="C4" pad="1"/>
<contactref element="IC3" pad="2"/>
<contactref element="R9" pad="1"/>
</signal>
<signal name="N$16">
<contactref element="C8" pad="2"/>
<contactref element="R13" pad="1"/>
<contactref element="IC4" pad="2"/>
</signal>
<signal name="N$17">
<contactref element="IC4" pad="1"/>
<contactref element="R13" pad="2"/>
<contactref element="R14" pad="1"/>
</signal>
<signal name="N$18">
<contactref element="C4" pad="2"/>
<contactref element="R10" pad="1"/>
<contactref element="R9" pad="2"/>
<contactref element="IC3" pad="1"/>
</signal>
<signal name="N$19">
<contactref element="C5" pad="2"/>
<contactref element="R11" pad="1"/>
<contactref element="IC3" pad="6"/>
</signal>
<signal name="N$20">
<contactref element="R11" pad="2"/>
<contactref element="IC3" pad="7"/>
<contactref element="R19" pad="1"/>
</signal>
<signal name="N$21">
<contactref element="R14" pad="2"/>
<contactref element="C9" pad="1"/>
</signal>
<signal name="N$22">
<contactref element="C9" pad="2"/>
<contactref element="R15" pad="1"/>
<contactref element="IC4" pad="6"/>
</signal>
<signal name="N$23">
<contactref element="R15" pad="2"/>
<contactref element="IC4" pad="7"/>
<contactref element="R20" pad="1"/>
</signal>
<signal name="N$24">
<contactref element="R17" pad="2"/>
<contactref element="THRU" pad="1"/>
</signal>
<signal name="N$25">
<contactref element="LP" pad="1"/>
<contactref element="R18" pad="2"/>
</signal>
<signal name="N$26">
<contactref element="BP" pad="1"/>
<contactref element="R19" pad="2"/>
</signal>
<signal name="N$27">
<contactref element="R20" pad="2"/>
<contactref element="HP" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
