<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.2">
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<library name="analog-devices">
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<description>&lt;b&gt;8-Lead Small Outline IC&lt;/b&gt; (SO-8)&lt;p&gt;
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<library name="resistor">
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<package name="R1206">
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</library>
<library name="ng">
<packages>
<package name="SMT_PINS_2">
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<attributes>
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<variantdefs>
</variantdefs>
<classes>
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<designrules>
<description language="en">&lt;b&gt;Design Rules for Fab Lab&lt;/b&gt;
&lt;p&gt;
Optimized for fast milling using 1.0 mm tool
&lt;/p&gt;</description>
<param name="layerSetup" value="(1*16)"/>
<param name="mtCopper" value="0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm"/>
<param name="mtIsolate" value="1.5mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0mil"/>
<param name="mdWireWire" value="15.5mil"/>
<param name="mdWirePad" value="15.5mil"/>
<param name="mdWireVia" value="15mil"/>
<param name="mdPadPad" value="15mil"/>
<param name="mdPadVia" value="15mil"/>
<param name="mdViaVia" value="15mil"/>
<param name="mdSmdPad" value="10mil"/>
<param name="mdSmdVia" value="10mil"/>
<param name="mdSmdSmd" value="10mil"/>
<param name="mdViaViaSameLayer" value="8mil"/>
<param name="mnLayersViaInSmd" value="2"/>
<param name="mdCopperDimension" value="0mil"/>
<param name="mdDrill" value="1mm"/>
<param name="mdSmdStop" value="0mil"/>
<param name="msWidth" value="12mil"/>
<param name="msDrill" value="0.8mm"/>
<param name="msMicroVia" value="9.99mm"/>
<param name="msBlindViaRatio" value="0.5"/>
<param name="rvPadTop" value="0.5"/>
<param name="rvPadInner" value="0.5"/>
<param name="rvPadBottom" value="0.5"/>
<param name="rvViaOuter" value="0.5"/>
<param name="rvViaInner" value="0.5"/>
<param name="rvMicroViaOuter" value="0.5"/>
<param name="rvMicroViaInner" value="0.5"/>
<param name="rlMinPadTop" value="0.2mm"/>
<param name="rlMaxPadTop" value="2mm"/>
<param name="rlMinPadInner" value="0.2mm"/>
<param name="rlMaxPadInner" value="2mm"/>
<param name="rlMinPadBottom" value="0.2mm"/>
<param name="rlMaxPadBottom" value="2mm"/>
<param name="rlMinViaOuter" value="0.2mm"/>
<param name="rlMaxViaOuter" value="2mm"/>
<param name="rlMinViaInner" value="0.2mm"/>
<param name="rlMaxViaInner" value="2mm"/>
<param name="rlMinMicroViaOuter" value="4mil"/>
<param name="rlMaxMicroViaOuter" value="20mil"/>
<param name="rlMinMicroViaInner" value="4mil"/>
<param name="rlMaxMicroViaInner" value="20mil"/>
<param name="psTop" value="1"/>
<param name="psBottom" value="1"/>
<param name="psFirst" value="-1"/>
<param name="psElongationLong" value="100"/>
<param name="psElongationOffset" value="100"/>
<param name="mvStopFrame" value="1"/>
<param name="mvCreamFrame" value="0"/>
<param name="mlMinStopFrame" value="4mil"/>
<param name="mlMaxStopFrame" value="4mil"/>
<param name="mlMinCreamFrame" value="0mil"/>
<param name="mlMaxCreamFrame" value="0mil"/>
<param name="mlViaStopLimit" value="0mil"/>
<param name="srRoundness" value="0"/>
<param name="srMinRoundness" value="0mil"/>
<param name="srMaxRoundness" value="0mil"/>
<param name="slThermalIsolate" value="1mm"/>
<param name="slThermalsForVias" value="0"/>
<param name="dpMaxLengthDifference" value="10mm"/>
<param name="dpGapFactor" value="2.5"/>
<param name="checkGrid" value="0"/>
<param name="checkAngle" value="0"/>
<param name="checkFont" value="1"/>
<param name="checkRestrict" value="1"/>
<param name="useDiameter" value="13"/>
<param name="maxErrors" value="50"/>
</designrules>
<autorouter>
<pass name="Default">
<param name="RoutingGrid" value="50mil"/>
<param name="tpViaShape" value="round"/>
<param name="PrefDir.1" value="|"/>
<param name="PrefDir.2" value="0"/>
<param name="PrefDir.3" value="0"/>
<param name="PrefDir.4" value="0"/>
<param name="PrefDir.5" value="0"/>
<param name="PrefDir.6" value="0"/>
<param name="PrefDir.7" value="0"/>
<param name="PrefDir.8" value="0"/>
<param name="PrefDir.9" value="0"/>
<param name="PrefDir.10" value="0"/>
<param name="PrefDir.11" value="0"/>
<param name="PrefDir.12" value="0"/>
<param name="PrefDir.13" value="0"/>
<param name="PrefDir.14" value="0"/>
<param name="PrefDir.15" value="0"/>
<param name="PrefDir.16" value="-"/>
<param name="cfVia" value="8"/>
<param name="cfNonPref" value="5"/>
<param name="cfChangeDir" value="2"/>
<param name="cfOrthStep" value="2"/>
<param name="cfDiagStep" value="3"/>
<param name="cfExtdStep" value="0"/>
<param name="cfBonusStep" value="1"/>
<param name="cfMalusStep" value="1"/>
<param name="cfPadImpact" value="4"/>
<param name="cfSmdImpact" value="4"/>
<param name="cfBusImpact" value="0"/>
<param name="cfHugging" value="3"/>
<param name="cfAvoid" value="4"/>
<param name="cfPolygon" value="10"/>
<param name="cfBase.1" value="0"/>
<param name="cfBase.2" value="1"/>
<param name="cfBase.3" value="1"/>
<param name="cfBase.4" value="1"/>
<param name="cfBase.5" value="1"/>
<param name="cfBase.6" value="1"/>
<param name="cfBase.7" value="1"/>
<param name="cfBase.8" value="1"/>
<param name="cfBase.9" value="1"/>
<param name="cfBase.10" value="1"/>
<param name="cfBase.11" value="1"/>
<param name="cfBase.12" value="1"/>
<param name="cfBase.13" value="1"/>
<param name="cfBase.14" value="1"/>
<param name="cfBase.15" value="1"/>
<param name="cfBase.16" value="0"/>
<param name="mnVias" value="20"/>
<param name="mnSegments" value="9999"/>
<param name="mnExtdSteps" value="9999"/>
<param name="mnRipupLevel" value="10"/>
<param name="mnRipupSteps" value="100"/>
<param name="mnRipupTotal" value="100"/>
</pass>
<pass name="Follow-me" refer="Default" active="yes">
</pass>
<pass name="Busses" refer="Default" active="yes">
<param name="cfNonPref" value="4"/>
<param name="cfBusImpact" value="4"/>
<param name="cfHugging" value="0"/>
<param name="mnVias" value="0"/>
</pass>
<pass name="Route" refer="Default" active="yes">
</pass>
<pass name="Optimize1" refer="Default" active="yes">
<param name="cfVia" value="99"/>
<param name="cfExtdStep" value="10"/>
<param name="cfHugging" value="1"/>
<param name="mnExtdSteps" value="1"/>
<param name="mnRipupLevel" value="0"/>
</pass>
<pass name="Optimize2" refer="Optimize1" active="yes">
<param name="cfNonPref" value="0"/>
<param name="cfChangeDir" value="6"/>
<param name="cfExtdStep" value="0"/>
<param name="cfBonusStep" value="2"/>
<param name="cfMalusStep" value="2"/>
<param name="cfPadImpact" value="2"/>
<param name="cfSmdImpact" value="2"/>
<param name="cfHugging" value="0"/>
</pass>
<pass name="Optimize3" refer="Optimize2" active="yes">
<param name="cfChangeDir" value="8"/>
<param name="cfPadImpact" value="0"/>
<param name="cfSmdImpact" value="0"/>
</pass>
<pass name="Optimize4" refer="Optimize3" active="yes">
<param name="cfChangeDir" value="25"/>
</pass>
</autorouter>
<elements>
<element name="SECONDAMP" library="linear" package="SO08" value="CA3140D" x="45.5597" y="15.7937"/>
<element name="INSTAMP" library="analog-devices" package="SO8" value="AD620R" x="17.1724" y="7.3127"/>
<element name="RG" library="resistor" package="R1206" value="2.2k" x="11.6245" y="7.0779" rot="R270"/>
<element name="R2" library="resistor" package="R1206" value="15k" x="36.9098" y="15.4938" rot="R90"/>
<element name="R3" library="resistor" package="R1206" value="15k" x="33.1058" y="15.5146" rot="R90"/>
<element name="R4" library="resistor" package="R1206" value="1M" x="25.0409" y="16.6769"/>
<element name="R5" library="resistor" package="R1206" value="1M" x="41.8774" y="5.5514"/>
<element name="R8" library="resistor" package="R1206" value="2.2k" x="25.6276" y="6.3482"/>
<element name="C1" library="rcl" package="C1206" value="6.8nF" x="42.3118" y="9.5753"/>
<element name="C2" library="rcl" package="C1206" value="1uF" x="26.5082" y="11.9504"/>
<element name="R9" library="resistor" package="R1206" value="25k" x="55.8089" y="13.4984"/>
<element name="R10" library="resistor" package="R1206" value="25k" x="59.963" y="17.4747"/>
<element name="R11" library="resistor" package="R1206" value="25k" x="64.0595" y="13.5557"/>
<element name="C7" library="rcl" package="C1206" value="220nF" x="48.0167" y="6.5005" rot="R270"/>
<element name="C8" library="rcl" package="C1206" value="220nF" x="52.4212" y="6.6294" rot="R90"/>
<element name="C9" library="rcl" package="C1206" value="220nF" x="56.5383" y="6.6276" rot="R270"/>
<element name="5V_IN" library="ng" package="SMT_PINS_2" value="2_PIN_HEADERHEADER" x="6.7348" y="5.6923"/>
<element name="OUTPUT" library="ng" package="SMT_PINS_2" value="2_PIN_HEADERHEADER" x="63.0442" y="6.0178"/>
<element name="ELECTRODES" library="ng" package="SMT_PINS_3" value="" x="6.6777" y="11.0175"/>
<element name="R1" library="resistor" package="R1206" value="0Ohm" x="16.5354" y="15.4432"/>
<element name="R6" library="resistor" package="R1206" value="0Ohm" x="63.0936" y="3.1242" rot="R90"/>
<element name="R7" library="resistor" package="R1206" value="0Ohm" x="51.1556" y="18.796" rot="R313.6"/>
<element name="C3" library="resistor" package="C1206" value="0.1uF" x="8.128" y="6.9342" rot="R90"/>
</elements>
<signals>
<signal name="N$1">
<contactref element="RG" pad="2"/>
<contactref element="INSTAMP" pad="1"/>
<wire x1="15.24" y1="5.08" x2="11.43" y2="5.08" width="0.254" layer="1"/>
<wire x1="11.43" y1="5.08" x2="11.6245" y2="5.6559" width="0.254" layer="1"/>
<wire x1="15.24" y1="5.08" x2="15.2674" y2="4.7127" width="0.254" layer="1"/>
</signal>
<signal name="N$2">
<contactref element="RG" pad="1"/>
<contactref element="INSTAMP" pad="8"/>
<wire x1="15.24" y1="8.89" x2="11.43" y2="8.89" width="0.254" layer="1"/>
<wire x1="11.43" y1="8.89" x2="11.6245" y2="8.4999" width="0.254" layer="1"/>
<wire x1="15.24" y1="8.89" x2="15.2674" y2="9.9127" width="0.254" layer="1"/>
</signal>
<signal name="VIRT_GND">
<contactref element="R2" pad="2"/>
<contactref element="R3" pad="1"/>
<contactref element="ELECTRODES" pad="2"/>
<wire x1="27.94" y1="16.51" x2="27.94" y2="19.05" width="0.254" layer="1"/>
<wire x1="30.48" y1="13.97" x2="27.94" y2="16.51" width="0.254" layer="1"/>
<wire x1="33.02" y1="13.97" x2="30.48" y2="13.97" width="0.254" layer="1"/>
<wire x1="33.7312" y1="13.9192" x2="35.0266" y2="15.2146" width="0.254" layer="1"/>
<wire x1="35.0266" y1="15.2146" x2="36.7792" y2="16.9164" width="0.254" layer="1"/>
<wire x1="33.02" y1="13.97" x2="33.7312" y2="13.9192" width="0.254" layer="1"/>
<wire x1="36.7792" y1="16.9164" x2="36.9098" y2="16.9158" width="0.254" layer="1"/>
<wire x1="33.02" y1="13.97" x2="33.1058" y2="14.0926" width="0.254" layer="1"/>
<wire x1="46.2026" y1="15.0622" x2="42.8244" y2="15.0622" width="0.254" layer="1"/>
<wire x1="42.8244" y1="15.0622" x2="38.227" y2="11.1252" width="0.254" layer="1"/>
<wire x1="38.227" y1="11.1252" x2="35.1028" y2="11.1252" width="0.254" layer="1"/>
<wire x1="35.1028" y1="11.1252" x2="35.0774" y2="11.2522" width="0.254" layer="1"/>
<wire x1="35.0774" y1="11.2522" x2="35.0266" y2="15.2146" width="0.254" layer="1"/>
<contactref element="R1" pad="1"/>
<wire x1="6.6777" y1="13.5575" x2="11.6525" y2="13.5575" width="0.254" layer="1"/>
<wire x1="11.6525" y1="13.5575" x2="13.4874" y2="15.3924" width="0.254" layer="1"/>
<wire x1="13.4874" y1="15.3924" x2="15.0626" y2="15.3924" width="0.254" layer="1"/>
<wire x1="15.0626" y1="15.3924" x2="15.1134" y2="15.4432" width="0.254" layer="1"/>
<wire x1="27.94" y1="19.05" x2="23.7236" y2="19.05" width="0.254" layer="1"/>
<wire x1="23.7236" y1="19.05" x2="23.7236" y2="16.6624" width="0.254" layer="1"/>
<wire x1="46.2026" y1="13.1937" x2="46.2026" y2="15.0622" width="0.254" layer="1"/>
<wire x1="15.1134" y1="15.4432" x2="23.7236" y2="16.6624" width="0" layer="19" extent="1-1"/>
</signal>
<signal name="N$8">
<contactref element="INSTAMP" pad="6"/>
<contactref element="C2" pad="1"/>
<wire x1="17.78" y1="12.7" x2="25.4" y2="12.7" width="0.254" layer="1"/>
<wire x1="17.78" y1="10.16" x2="17.78" y2="12.7" width="0.254" layer="1"/>
<wire x1="25.4" y1="12.7" x2="25.1082" y2="11.9504" width="0.254" layer="1"/>
<wire x1="17.78" y1="10.16" x2="17.8074" y2="9.9127" width="0.254" layer="1"/>
</signal>
<signal name="N$9">
<contactref element="R4" pad="2"/>
<contactref element="R8" pad="1"/>
<contactref element="C2" pad="2"/>
<wire x1="26.67" y1="13.97" x2="27.94" y2="12.7" width="0.254" layer="1"/>
<wire x1="26.67" y1="16.51" x2="26.67" y2="13.97" width="0.254" layer="1"/>
<wire x1="27.94" y1="12.7" x2="27.9082" y2="11.9504" width="0.254" layer="1"/>
<wire x1="26.67" y1="16.51" x2="26.4629" y2="16.6769" width="0.254" layer="1"/>
<wire x1="27.94" y1="10.16" x2="24.13" y2="6.35" width="0.254" layer="1"/>
<wire x1="27.94" y1="11.43" x2="27.94" y2="10.16" width="0.254" layer="1"/>
<wire x1="24.13" y1="6.35" x2="24.2056" y2="6.3482" width="0.254" layer="1"/>
<wire x1="27.94" y1="11.43" x2="27.9082" y2="11.9504" width="0.254" layer="1"/>
</signal>
<signal name="N$15">
<contactref element="INSTAMP" pad="2"/>
<contactref element="ELECTRODES" pad="1"/>
<wire x1="16.5374" y1="4.7127" x2="16.5608" y2="4.7127" width="0.254" layer="1"/>
<wire x1="16.5608" y1="4.7127" x2="16.4846" y2="2.6416" width="0.254" layer="1"/>
<wire x1="16.4846" y1="2.6416" x2="3.175" y2="2.6416" width="0.254" layer="1"/>
<wire x1="3.175" y1="2.6416" x2="3.2512" y2="11.1252" width="0.254" layer="1"/>
<wire x1="3.2512" y1="11.1252" x2="6.8555" y2="11.1252" width="0.254" layer="1"/>
<wire x1="6.8555" y1="11.1252" x2="6.6777" y2="11.0175" width="0.254" layer="1"/>
</signal>
<signal name="VCC">
<contactref element="R3" pad="2"/>
<contactref element="INSTAMP" pad="7"/>
<contactref element="SECONDAMP" pad="7"/>
<contactref element="5V_IN" pad="2"/>
<wire x1="29.21" y1="16.51" x2="33.02" y2="16.51" width="0.254" layer="1"/>
<wire x1="29.21" y1="19.05" x2="29.21" y2="16.51" width="0.254" layer="1"/>
<wire x1="27.94" y1="20.32" x2="29.21" y2="19.05" width="0.254" layer="1"/>
<wire x1="16.51" y1="20.32" x2="27.94" y2="20.32" width="0.254" layer="1"/>
<wire x1="16.51" y1="10.16" x2="16.51" y2="12.1412" width="0.254" layer="1"/>
<wire x1="16.51" y1="12.1412" x2="16.51" y2="20.32" width="0.254" layer="1"/>
<wire x1="33.02" y1="16.51" x2="33.1058" y2="16.9366" width="0.254" layer="1"/>
<wire x1="16.51" y1="10.16" x2="16.5374" y2="9.9127" width="0.254" layer="1"/>
<wire x1="33.1058" y1="16.9366" x2="33.1216" y2="16.9366" width="0.254" layer="1"/>
<wire x1="33.1216" y1="16.9366" x2="33.1216" y2="20.701" width="0.254" layer="1"/>
<wire x1="33.1216" y1="20.701" x2="44.9247" y2="20.701" width="0.254" layer="1"/>
<wire x1="44.9247" y1="20.701" x2="44.9247" y2="18.3937" width="0.254" layer="1"/>
<wire x1="6.7348" y1="8.2323" x2="8.4593" y2="9.9568" width="0.254" layer="1"/>
<wire x1="8.4593" y1="9.9568" x2="10.7696" y2="9.9568" width="0.254" layer="1"/>
<wire x1="10.7696" y1="9.9568" x2="12.954" y2="12.1412" width="0.254" layer="1"/>
<wire x1="12.954" y1="12.1412" x2="16.51" y2="12.1412" width="0.254" layer="1"/>
</signal>
<signal name="GND">
<contactref element="R2" pad="1"/>
<contactref element="INSTAMP" pad="4"/>
<contactref element="SECONDAMP" pad="4"/>
<contactref element="C7" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="5V_IN" pad="1"/>
<wire x1="50.8" y1="7.62" x2="48.1838" y2="5.08" width="0.254" layer="1"/>
<wire x1="52.07" y1="7.62" x2="50.8" y2="7.62" width="0.254" layer="1"/>
<wire x1="53.34" y1="7.62" x2="55.88" y2="5.08" width="0.254" layer="1"/>
<wire x1="52.07" y1="7.62" x2="53.34" y2="7.62" width="0.254" layer="1"/>
<wire x1="55.88" y1="5.08" x2="56.5383" y2="5.2276" width="0.254" layer="1"/>
<wire x1="52.07" y1="7.62" x2="52.4212" y2="8.0294" width="0.254" layer="1"/>
<wire x1="68.58" y1="2.54" x2="68.58" y2="20.1422" width="0.254" layer="1"/>
<wire x1="68.58" y1="20.1422" x2="68.58" y2="20.32" width="0.254" layer="1"/>
<wire x1="68.5546" y1="1.7022" x2="68.6054" y2="2.54" width="0.254" layer="1"/>
<wire x1="68.6054" y1="2.54" x2="68.58" y2="2.54" width="0.254" layer="1"/>
<wire x1="48.1838" y1="5.08" x2="48.133" y2="2.0574" width="0.254" layer="1"/>
<wire x1="48.133" y1="2.0574" x2="48.3108" y2="1.7272" width="0.254" layer="1"/>
<wire x1="36.83" y1="13.97" x2="36.9098" y2="14.0718" width="0.254" layer="1"/>
<wire x1="48.1838" y1="5.08" x2="48.0167" y2="5.1005" width="0.254" layer="1"/>
<wire x1="27.94" y1="3.81" x2="19.05" y2="3.81" width="0.254" layer="1"/>
<wire x1="29.083" y1="2.1082" x2="27.94" y2="3.81" width="0.254" layer="1"/>
<wire x1="48.133" y1="2.0574" x2="31.4706" y2="2.0574" width="0.254" layer="1"/>
<wire x1="31.4706" y1="2.0574" x2="29.083" y2="2.1082" width="0.254" layer="1"/>
<wire x1="19.05" y1="3.81" x2="19.0774" y2="4.7127" width="0.254" layer="1"/>
<wire x1="36.83" y1="13.97" x2="38.8112" y2="13.97" width="0.254" layer="1"/>
<wire x1="38.8112" y1="13.97" x2="41.0464" y2="16.2052" width="0.254" layer="1"/>
<wire x1="41.0464" y1="16.2052" x2="48.514" y2="16.3322" width="0.254" layer="1"/>
<wire x1="48.514" y1="16.3322" x2="52.6034" y2="20.2692" width="0.254" layer="1"/>
<wire x1="52.6034" y1="20.2692" x2="68.4276" y2="20.2946" width="0.254" layer="1"/>
<wire x1="68.4276" y1="20.2946" x2="68.58" y2="20.1422" width="0.254" layer="1"/>
<wire x1="47.4647" y1="13.1937" x2="47.4647" y2="14.9781" width="0.254" layer="1"/>
<wire x1="47.4647" y1="14.9781" x2="48.514" y2="16.3322" width="0.254" layer="1"/>
<wire x1="6.7348" y1="5.6923" x2="7.6989" y2="5.6923" width="0.254" layer="1"/>
<wire x1="7.6989" y1="5.6923" x2="9.0424" y2="7.0358" width="0.254" layer="1"/>
<wire x1="9.0424" y1="7.0358" x2="19.0774" y2="7.0358" width="0.254" layer="1"/>
<wire x1="19.0774" y1="7.0358" x2="19.0774" y2="4.7127" width="0.254" layer="1"/>
<wire x1="31.5976" y1="3.8354" x2="31.4706" y2="2.0574" width="0.254" layer="1"/>
<contactref element="R6" pad="1"/>
<wire x1="48.3108" y1="1.7272" x2="63.1444" y2="1.7272" width="0.254" layer="1"/>
<wire x1="63.1444" y1="1.7272" x2="63.0936" y2="1.7022" width="0.254" layer="1"/>
<wire x1="63.0936" y1="1.7022" x2="68.5546" y2="1.7022" width="0.254" layer="1"/>
<wire x1="68.5546" y1="1.7022" x2="68.5546" y2="3.3274" width="0.254" layer="1"/>
</signal>
<signal name="N$4">
<contactref element="R5" pad="2"/>
<contactref element="C1" pad="2"/>
<contactref element="R9" pad="1"/>
<wire x1="43.18" y1="6.35" x2="43.18" y2="8.89" width="0.254" layer="1"/>
<wire x1="43.18" y1="8.89" x2="43.7118" y2="9.5753" width="0.254" layer="1"/>
<wire x1="49.53" y1="12.7" x2="51.7144" y2="12.7" width="0.254" layer="1"/>
<wire x1="51.7144" y1="12.7" x2="54.61" y2="12.7" width="0.254" layer="1"/>
<wire x1="43.18" y1="6.35" x2="49.53" y2="12.7" width="0.254" layer="1"/>
<wire x1="54.61" y1="12.7" x2="54.3869" y2="13.4984" width="0.254" layer="1"/>
<wire x1="43.18" y1="6.35" x2="43.2994" y2="5.5514" width="0.254" layer="1"/>
<contactref element="R7" pad="2"/>
<wire x1="52.1362375" y1="17.766225" x2="51.7144" y2="17.3443875" width="0.254" layer="1"/>
<wire x1="51.7144" y1="17.3443875" x2="51.7144" y2="12.7" width="0.254" layer="1"/>
</signal>
<signal name="N$5">
<contactref element="R8" pad="2"/>
<contactref element="R5" pad="1"/>
<contactref element="SECONDAMP" pad="2"/>
<contactref element="C1" pad="1"/>
<wire x1="40.64" y1="6.35" x2="40.64" y2="8.89" width="0.254" layer="1"/>
<wire x1="40.64" y1="6.35" x2="40.4554" y2="5.5514" width="0.254" layer="1"/>
<wire x1="29.21" y1="8.89" x2="26.67" y2="6.35" width="0.254" layer="1"/>
<wire x1="40.64" y1="8.89" x2="29.21" y2="8.89" width="0.254" layer="1"/>
<wire x1="26.67" y1="6.35" x2="27.0496" y2="6.3482" width="0.254" layer="1"/>
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<wire x1="40.9194" y1="9.5753" x2="40.9194" y2="11.2014" width="0.254" layer="1"/>
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</signal>
<signal name="N$3">
<contactref element="INSTAMP" pad="3"/>
<contactref element="ELECTRODES" pad="3"/>
<wire x1="17.8074" y1="4.7127" x2="17.8054" y2="4.7127" width="0.254" layer="1"/>
<wire x1="17.8054" y1="4.7127" x2="17.8054" y2="1.524" width="0.254" layer="1"/>
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<wire x1="6.6777" y1="16.129" x2="6.6777" y2="16.0975" width="0.254" layer="1"/>
<wire x1="6.6777" y1="16.129" x2="2.3114" y2="16.129" width="0.254" layer="1"/>
<wire x1="2.3114" y1="16.129" x2="2.3114" y2="1.524" width="0.254" layer="1"/>
</signal>
<signal name="N$12">
<contactref element="R9" pad="2"/>
<contactref element="R10" pad="1"/>
<contactref element="C7" pad="1"/>
<wire x1="52.07" y1="11.43" x2="48.26" y2="7.62" width="0.254" layer="1"/>
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<wire x1="48.26" y1="7.62" x2="48.0167" y2="7.9005" width="0.254" layer="1"/>
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<wire x1="57.15" y1="13.97" x2="57.2309" y2="13.4984" width="0.254" layer="1"/>
</signal>
<signal name="N$20">
<contactref element="R10" pad="2"/>
<contactref element="R11" pad="1"/>
<contactref element="C8" pad="1"/>
<wire x1="54.61" y1="3.0988" x2="52.07" y2="5.08" width="0.254" layer="1"/>
<wire x1="67.2084" y1="3.1496" x2="54.61" y2="3.0988" width="0.254" layer="1"/>
<wire x1="67.2084" y1="15.2908" x2="67.2084" y2="3.1496" width="0.254" layer="1"/>
<wire x1="62.23" y1="15.24" x2="67.2084" y2="15.2908" width="0.254" layer="1"/>
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<wire x1="60.96" y1="17.78" x2="61.385" y2="17.4747" width="0.254" layer="1"/>
</signal>
<signal name="N$25">
<contactref element="R11" pad="2"/>
<contactref element="C9" pad="1"/>
<contactref element="OUTPUT" pad="2"/>
<wire x1="64.77" y1="7.62" x2="57.15" y2="7.62" width="0.254" layer="1"/>
<wire x1="64.77" y1="12.7" x2="64.77" y2="7.62" width="0.254" layer="1"/>
<wire x1="57.15" y1="7.62" x2="56.5383" y2="8.0276" width="0.254" layer="1"/>
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<wire x1="63.8322" y1="8.5578" x2="63.0442" y2="8.5578" width="0.254" layer="1"/>
</signal>
<signal name="N$7">
</signal>
<signal name="N$11">
</signal>
<signal name="N$13">
</signal>
<signal name="N$19">
<wire x1="38.1762" y1="5.5372" x2="40.259" y2="5.5372" width="0.254" layer="1"/>
</signal>
<signal name="N$6">
<wire x1="16.5608" y1="9.8298" x2="16.51" y2="9.8298" width="0.254" layer="1"/>
<wire x1="16.51" y1="9.8298" x2="16.51" y2="8.0518" width="0.254" layer="1"/>
<wire x1="16.51" y1="8.0518" x2="21.4376" y2="8.0518" width="0.254" layer="1"/>
<wire x1="21.4376" y1="8.0518" x2="21.4376" y2="4.7244" width="0.254" layer="1"/>
<wire x1="21.4376" y1="4.7244" x2="29.4132" y2="4.7244" width="0.254" layer="1"/>
<wire x1="29.4132" y1="4.7244" x2="29.4132" y2="6.9088" width="0.254" layer="1"/>
<wire x1="29.4132" y1="6.9088" x2="31.5976" y2="6.9088" width="0.254" layer="1"/>
</signal>
<signal name="N$10">
<contactref element="R4" pad="1"/>
<contactref element="SECONDAMP" pad="3"/>
<contactref element="R1" pad="2"/>
<wire x1="17.9574" y1="15.4432" x2="22.3852" y2="15.4432" width="0.254" layer="1"/>
<wire x1="22.3852" y1="15.4432" x2="23.6189" y2="16.6769" width="0.254" layer="1"/>
<wire x1="23.6189" y1="16.6769" x2="46.1947" y2="13.1937" width="0" layer="19" extent="1-1"/>
</signal>
<signal name="N$17">
<contactref element="R6" pad="2"/>
<contactref element="OUTPUT" pad="1"/>
<wire x1="63.0936" y1="4.5462" x2="63.0442" y2="4.5462" width="0.254" layer="1"/>
<wire x1="63.0442" y1="4.5462" x2="63.0442" y2="6.0178" width="0.254" layer="1"/>
</signal>
<signal name="N$18">
<contactref element="SECONDAMP" pad="6"/>
<contactref element="R7" pad="1"/>
<wire x1="46.1947" y1="18.3937" x2="46.2534" y2="18.3937" width="0.254" layer="1"/>
<wire x1="46.2534" y1="18.3937" x2="46.2534" y2="20.7518" width="0.254" layer="1"/>
<wire x1="46.2534" y1="20.7518" x2="46.3042" y2="20.8026" width="0.254" layer="1"/>
<wire x1="46.3042" y1="20.8026" x2="48.7172" y2="20.8026" width="0.254" layer="1"/>
<wire x1="48.7172" y1="20.8026" x2="49.694028125" y2="19.825771875" width="0.254" layer="1"/>
<wire x1="49.694028125" y1="19.825771875" x2="50.174959375" y2="19.825771875" width="0.254" layer="1"/>
</signal>
<signal name="N$21">
<contactref element="C3" pad="1"/>
</signal>
<signal name="N$22">
<contactref element="C3" pad="2"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
