<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.1">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="40.64" y2="0" width="0.127" layer="20"/>
<wire x1="40.64" y1="0" x2="40.64" y2="73.66" width="0.127" layer="20"/>
<wire x1="40.64" y1="73.66" x2="0" y2="73.66" width="0.127" layer="20"/>
<wire x1="0" y1="73.66" x2="0" y2="0" width="0.127" layer="20"/>
<text>TOP COPPER</text>
<text>BOT COPPER</text>
<text>TOP SILKSCREEN</text>
<text>TOP SOLDERMASK </text>
<text>BOT SOLDERMASK</text>
<text>switch</text>
<text>bat-</text>
<text>bat+</text>
<text>JRS2012</text>
<text>PRE_AMP_V2</text>
<text>A</text>
<text>C</text>
<hole x="36.83" y="3.81" drill="2.8"/>
</plain>
<libraries>
<library name="linear">
<packages>
<package name="DIL08">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="rcl">
<packages>
<package name="0207/7">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0207, grid 7.5 mm</description>
</package>
<package name="C025-025X050">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 2.5 mm, outline 2.5 x 5 mm</description>
</package>
<package name="E2,5-6">
<description>&lt;b&gt;ELECTROLYTIC CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 2.54 mm, diameter 6 mm</description>
</package>
</packages>
</library>
<library name="pinhead">
<packages>
<package name="1X15">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X06">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X02/90">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X02">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X05">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="diode">
<packages>
<package name="DO35-7">
<description>&lt;B&gt;DIODE&lt;/B&gt;&lt;p&gt;
diameter 2 mm, horizontal, grid 7.62 mm</description>
</package>
</packages>
</library>
<library name="v-reg">
<packages>
<package name="TO92">
<description>&lt;b&gt;TO 92&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="jumper">
<packages>
<package name="JP2">
<description>&lt;b&gt;JUMPER&lt;/b&gt;</description>
</package>
<package name="SJ">
<description>&lt;b&gt;Solder jumper&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="IC2" library="linear" package="DIL08" value="LM6142">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="rcl" package="0207/7" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R3" library="rcl" package="0207/7" value="2k7">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="rcl" package="0207/7" value="2k7">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="rcl" package="0207/7" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C22" library="rcl" package="C025-025X050" value="5p6">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="JP9" library="pinhead" package="1X15" value="">
<attribute name="VALUE"/>
</element>
<element name="R9" library="rcl" package="0207/7" value="2k7">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D2" library="diode" package="DO35-7" value="1N4148">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D1" library="diode" package="DO35-7" value="1N4148">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C21" library="rcl" package="C025-025X050" value="100p">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C5" library="rcl" package="C025-025X050" value="5p6">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C9" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="IC1" library="v-reg" package="TO92" value="LP2950CZ-3.3">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C4" library="rcl" package="E2,5-6" value="100u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C20" library="rcl" package="E2,5-6" value="100u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="rcl" package="0207/7" value="1k5">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R7" library="rcl" package="0207/7" value="1k5">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C13" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="rcl" package="0207/7" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C6" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="IC3" library="linear" package="DIL08" value="LM6142">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R16" library="rcl" package="0207/7" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C8" library="rcl" package="C025-025X050" value="5p6">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R17" library="rcl" package="0207/7" value="2k7">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R18" library="rcl" package="0207/7" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C14" library="rcl" package="C025-025X050" value="5p6">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R19" library="rcl" package="0207/7" value="2k7">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R20" library="rcl" package="0207/7" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C15" library="rcl" package="C025-025X050" value="100p">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C11" library="rcl" package="E2,5-6" value="100u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C17" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R13" library="rcl" package="0207/7" value="100">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="JP4" library="pinhead" package="1X06" value="">
<attribute name="VALUE"/>
</element>
<element name="C16" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="rcl" package="E2,5-6" value="100u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="L1" library="rcl" package="0207/7" value="680uH">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="rcl" package="E2,5-6" value="100u">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R8" library="rcl" package="0207/7" value="1k5">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R10" library="rcl" package="0207/7" value="1k5">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C10" library="rcl" package="C025-025X050" value="22n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C23" library="rcl" package="C025-025X050" value="22n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="D4" library="diode" package="DO35-7" value="BAT43">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="JP6" library="pinhead" package="1X02/90" value="">
<attribute name="VALUE"/>
</element>
<element name="JP7" library="pinhead" package="1X02/90" value="">
<attribute name="VALUE"/>
</element>
<element name="LED" library="pinhead" package="1X02" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R11" library="rcl" package="0207/7" value="1k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C7" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C12" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C18" library="rcl" package="C025-025X050" value="100n">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="JP10" library="jumper" package="JP2" value="">
<attribute name="VALUE"/>
</element>
<element name="JP11" library="jumper" package="JP2" value="">
<attribute name="VALUE"/>
</element>
<element name="JP1" library="pinhead" package="1X05" value="">
<attribute name="VALUE"/>
</element>
<element name="SJ1" library="jumper" package="SJ" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="SJ2" library="jumper" package="SJ" value=""/>
</elements>
<signals>
<signal name="N$8">
<contactref element="R3" pad="1"/>
<contactref element="C23" pad="1"/>
</signal>
<signal name="GND">
<contactref element="IC1" pad="2"/>
<contactref element="R7" pad="1"/>
<contactref element="C3" pad="1"/>
<contactref element="C4" pad="-"/>
<contactref element="D2" pad="C"/>
<contactref element="C20" pad="-"/>
<contactref element="C9" pad="1"/>
<contactref element="JP9" pad="3"/>
<contactref element="IC2" pad="4"/>
<contactref element="C6" pad="1"/>
<contactref element="IC3" pad="4"/>
<contactref element="C11" pad="-"/>
<contactref element="C17" pad="1"/>
<contactref element="C16" pad="1"/>
<contactref element="C2" pad="-"/>
<contactref element="C1" pad="-"/>
<contactref element="JP7" pad="1"/>
<contactref element="R11" pad="2"/>
<contactref element="C12" pad="1"/>
<contactref element="C18" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="C13" pad="1"/>
<contactref element="JP10" pad="3"/>
<contactref element="JP11" pad="3"/>
<contactref element="SJ1" pad="2"/>
<contactref element="SJ2" pad="2"/>
</signal>
<signal name="N$24">
<contactref element="D1" pad="C"/>
<contactref element="D2" pad="A"/>
</signal>
<signal name="V+">
<contactref element="C16" pad="2"/>
<contactref element="IC2" pad="8"/>
<contactref element="IC1" pad="3"/>
<contactref element="C3" pad="2"/>
<contactref element="L1" pad="2"/>
<contactref element="IC3" pad="8"/>
<contactref element="C6" pad="2"/>
<contactref element="C2" pad="+"/>
</signal>
<signal name="MIC+">
<contactref element="C9" pad="2"/>
<contactref element="C20" pad="+"/>
<contactref element="R9" pad="1"/>
<contactref element="D1" pad="A"/>
<contactref element="C17" pad="2"/>
<contactref element="JP10" pad="1"/>
<contactref element="JP11" pad="1"/>
</signal>
<signal name="M1">
<contactref element="C21" pad="1"/>
<contactref element="JP11" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="R2" pad="1"/>
<contactref element="IC2" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="C22" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="IC2" pad="1"/>
<contactref element="R2" pad="2"/>
<contactref element="C22" pad="2"/>
<contactref element="C23" pad="2"/>
</signal>
<signal name="3V3/2">
<contactref element="R4" pad="1"/>
<contactref element="R6" pad="1"/>
<contactref element="R1" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="C11" pad="+"/>
<contactref element="IC2" pad="5"/>
<contactref element="IC3" pad="5"/>
<contactref element="C7" pad="2"/>
<contactref element="R20" pad="1"/>
<contactref element="R19" pad="1"/>
<contactref element="C18" pad="2"/>
<contactref element="C12" pad="2"/>
<contactref element="C13" pad="2"/>
</signal>
<signal name="P0.28">
<contactref element="R10" pad="2"/>
<contactref element="JP1" pad="1"/>
</signal>
<signal name="MOSI0">
<contactref element="R8" pad="2"/>
<contactref element="JP4" pad="4"/>
</signal>
<signal name="N$1">
<contactref element="C21" pad="2"/>
<contactref element="IC2" pad="3"/>
<contactref element="R6" pad="2"/>
</signal>
<signal name="N$9">
<contactref element="R17" pad="1"/>
<contactref element="C10" pad="1"/>
</signal>
<signal name="N$11">
<contactref element="C15" pad="2"/>
<contactref element="R20" pad="2"/>
<contactref element="IC3" pad="3"/>
</signal>
<signal name="N$12">
<contactref element="R19" pad="2"/>
<contactref element="R18" pad="1"/>
<contactref element="C14" pad="1"/>
<contactref element="IC3" pad="2"/>
</signal>
<signal name="N$15">
<contactref element="R18" pad="2"/>
<contactref element="C14" pad="2"/>
<contactref element="IC3" pad="1"/>
<contactref element="C10" pad="2"/>
</signal>
<signal name="N$18">
<contactref element="C5" pad="1"/>
<contactref element="R5" pad="1"/>
<contactref element="R3" pad="2"/>
<contactref element="IC2" pad="6"/>
</signal>
<signal name="N$5">
<contactref element="R16" pad="1"/>
<contactref element="C8" pad="1"/>
<contactref element="R17" pad="2"/>
<contactref element="IC3" pad="6"/>
</signal>
<signal name="M2">
<contactref element="C15" pad="1"/>
<contactref element="JP10" pad="2"/>
</signal>
<signal name="3V3">
<contactref element="R1" pad="2"/>
<contactref element="R9" pad="2"/>
<contactref element="R13" pad="1"/>
<contactref element="IC1" pad="1"/>
<contactref element="C4" pad="+"/>
</signal>
<signal name="VIN">
<contactref element="L1" pad="1"/>
<contactref element="JP9" pad="2"/>
<contactref element="C1" pad="+"/>
<contactref element="D4" pad="C"/>
</signal>
<signal name="OUT1">
<contactref element="C5" pad="2"/>
<contactref element="R5" pad="2"/>
<contactref element="IC2" pad="7"/>
<contactref element="R8" pad="1"/>
</signal>
<signal name="OUT2">
<contactref element="C8" pad="2"/>
<contactref element="R16" pad="2"/>
<contactref element="IC3" pad="7"/>
<contactref element="R10" pad="1"/>
</signal>
<signal name="N$2">
</signal>
<signal name="N$6">
</signal>
<signal name="N$7">
<contactref element="JP6" pad="2"/>
<contactref element="D4" pad="A"/>
</signal>
<signal name="N$13">
<contactref element="JP7" pad="2"/>
<contactref element="JP6" pad="1"/>
</signal>
<signal name="P1.21">
<contactref element="LED" pad="1"/>
<contactref element="JP9" pad="8"/>
</signal>
<signal name="N$14">
<contactref element="LED" pad="2"/>
<contactref element="R11" pad="1"/>
</signal>
<signal name="VREF">
<contactref element="R13" pad="2"/>
<contactref element="JP1" pad="4"/>
</signal>
<signal name="N$10">
<contactref element="SJ1" pad="1"/>
<contactref element="JP1" pad="5"/>
</signal>
<signal name="N$16">
<contactref element="SJ2" pad="1"/>
<contactref element="JP4" pad="6"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
