<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<text>M503A</text>
<text>S</text>
</plain>
<libraries>
<library name="rcl">
<packages>
<package name="0207/10">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0207, grid 10 mm</description>
</package>
<package name="C050-025X075">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 5 mm, outline 2.5 x 7.5 mm</description>
</package>
<package name="C075-032X103">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 7.5 mm, outline 3.2 x 10.3 mm</description>
</package>
</packages>
</library>
<library name="dec-con">
<packages>
<package name="SINGLE">
<description>Single-Height DEC board</description>
</package>
<package name="EDGE-CON2">
<description>Single-Height DEC edge connector</description>
</package>
<package name="TO99B">
<description>TO99 with pads stretched to a square grid</description>
</package>
<package name="TO99C">
<description>TO99 rotate 45 degrees.</description>
</package>
<package name="FLIPCHIP">
</package>
</packages>
</library>
<library name="74xx-us">
<packages>
<package name="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="diode">
<packages>
<package name="DO35-10">
<description>&lt;B&gt;DIODE&lt;/B&gt;&lt;p&gt;
diameter 2 mm, horizontal, grid 10.16 mm</description>
</package>
<package name="DO35Z10">
<description>&lt;B&gt;DIODE&lt;/B&gt;&lt;p&gt;
diameter 2 mm, horizontal, grid 10.16mm</description>
</package>
</packages>
</library>
<library name="transistor-npn">
<packages>
<package name="TO39">
<description>&lt;b&gt;TO-39&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="transistor-pnp">
<packages>
<package name="TO39">
<description>&lt;b&gt;TO-39&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="U$4" library="dec-con" package="SINGLE" value="OUTLINE-SINGLE"/>
<element name="C1" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="C2" library="rcl" package="C075-032X103" value=".01uf"/>
<element name="R1" library="rcl" package="0207/10" value="270K"/>
<element name="R2" library="rcl" package="0207/10" value="3.3K"/>
<element name="R3" library="rcl" package="0207/10" value="47K"/>
<element name="E1" library="74xx-us" package="DIL14" value="7400N"/>
<element name="R14" library="rcl" package="0207/10" value="62K"/>
<element name="D1" library="diode" package="DO35-10" value="1N4154"/>
<element name="D2" library="diode" package="DO35-10" value="1N4154"/>
<element name="Q3" library="transistor-npn" package="TO39" value="PN3569"/>
<element name="Q2" library="transistor-pnp" package="TO39" value="BC557"/>
<element name="U$2" library="dec-con" package="EDGE-CON2" value=""/>
<element name="C11" library="rcl" package="C050-025X075" value="120pF"/>
<element name="R44" library="rcl" package="0207/10" value="1K"/>
<element name="D13" library="diode" package="DO35-10" value="1N4154"/>
<element name="Q12" library="transistor-npn" package="TO39" value="PN3569"/>
<element name="R45" library="rcl" package="0207/10" value="1K"/>
<element name="R46" library="rcl" package="0207/10" value="1K"/>
<element name="C12" library="rcl" package="C050-025X075" value="120pF"/>
<element name="D14" library="diode" package="DO35-10" value="1N4154"/>
<element name="E2" library="74xx-us" package="DIL14" value="7400N"/>
<element name="C9" library="rcl" package="C050-025X075" value="120pF"/>
<element name="R41" library="rcl" package="0207/10" value="1K"/>
<element name="D11" library="diode" package="DO35-10" value="1N4154"/>
<element name="Q11" library="transistor-npn" package="TO39" value="PN3569"/>
<element name="R42" library="rcl" package="0207/10" value="1K"/>
<element name="R43" library="rcl" package="0207/10" value="1K"/>
<element name="C10" library="rcl" package="C050-025X075" value="120pF"/>
<element name="D12" library="diode" package="DO35-10" value="1N4154"/>
<element name="Q1" library="transistor-npn" package="TO39" value="PN3569"/>
<element name="Q4" library="transistor-pnp" package="TO39" value="BC557"/>
<element name="E3" library="dec-con" package="TO99C" value="MC1709"/>
<element name="Q5" library="transistor-pnp" package="TO39" value="2N3906"/>
<element name="R4" library="rcl" package="0207/10" value="270K"/>
<element name="R5" library="rcl" package="0207/10" value="3.3K"/>
<element name="R6" library="rcl" package="0207/10" value="47K"/>
<element name="R7" library="rcl" package="0207/10" value="18K"/>
<element name="R8" library="rcl" package="0207/10" value="18K"/>
<element name="R9" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R10" library="rcl" package="0207/10" value="34.8K MF"/>
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<element name="R12" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R13" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R15" library="rcl" package="0207/10" value="1K"/>
<element name="R16" library="rcl" package="0207/10" value="2.2K"/>
<element name="R17" library="rcl" package="0207/10" value="3.3K"/>
<element name="D3" library="diode" package="DO35-10" value="1N4154"/>
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<element name="R39" library="rcl" package="0207/10" value="1K"/>
<element name="D8" library="diode" package="DO35Z10" value="1N752A 5.6V"/>
<element name="D9" library="diode" package="DO35Z10" value="1N752A 5.6V"/>
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<element name="R19" library="rcl" package="0207/10" value="3.3K"/>
<element name="R20" library="rcl" package="0207/10" value="47K"/>
<element name="R31" library="rcl" package="0207/10" value="62K"/>
<element name="D4" library="diode" package="DO35-10" value="1N4154"/>
<element name="D5" library="diode" package="DO35-10" value="1N4154"/>
<element name="Q8" library="transistor-npn" package="TO39" value="PN3569"/>
<element name="Q7" library="transistor-pnp" package="TO39" value="BC557"/>
<element name="Q6" library="transistor-npn" package="TO39" value="PN3569"/>
<element name="Q9" library="transistor-pnp" package="TO39" value="BC557"/>
<element name="E4" library="dec-con" package="TO99B" value="MC1709"/>
<element name="Q10" library="transistor-pnp" package="TO39" value="2N3906"/>
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<element name="R22" library="rcl" package="0207/10" value="3.3K"/>
<element name="R23" library="rcl" package="0207/10" value="47K"/>
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<element name="R25" library="rcl" package="0207/10" value="18K"/>
<element name="R26" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R27" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R28" library="rcl" package="0207/10" value="1K"/>
<element name="R29" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R30" library="rcl" package="0207/10" value="34.8K MF"/>
<element name="R32" library="rcl" package="0207/10" value="1K"/>
<element name="R33" library="rcl" package="0207/10" value="2.2K"/>
<element name="R34" library="rcl" package="0207/10" value="3.3K"/>
<element name="D6" library="diode" package="DO35-10" value="1N4154"/>
<element name="C4" library="rcl" package="C050-025X075" value=".01uf"/>
<element name="R37" library="rcl" package="0207/10" value="750"/>
<element name="D7" library="diode" package="DO35-10" value="1N4154"/>
<element name="C7" library="rcl" package="C050-025X075" value=".01uf"/>
<element name="C8" library="rcl" package="C050-025X075" value=".01uf"/>
<element name="D10" library="diode" package="DO35-10" value="1N4154"/>
<element name="R40" library="rcl" package="0207/10" value="750"/>
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<element name="D15" library="diode" package="DO35-10" value="1N4154"/>
<element name="D16" library="diode" package="DO35-10" value="1N4154"/>
<element name="D17" library="diode" package="DO35-10" value="1N4154"/>
<element name="C13" library="rcl" package="C050-025X075" value=".01uf"/>
<element name="C5" library="rcl" package="C050-025X075" value=".01uf"/>
<element name="C6" library="rcl" package="C050-025X075" value=".01uf"/>
<element name="U$1" library="dec-con" package="FLIPCHIP" value=""/>
</elements>
<signals>
<signal name="GND">
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="E1" pad="7"/>
<contactref element="U$2" pad="C2"/>
<contactref element="Q12" pad="1"/>
<contactref element="E2" pad="7"/>
<contactref element="Q11" pad="1"/>
<contactref element="D3" pad="A"/>
<contactref element="C14" pad="2"/>
<contactref element="D6" pad="A"/>
<contactref element="D17" pad="C"/>
<contactref element="C13" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="C3" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="C4" pad="2"/>
<contactref element="C15" pad="2"/>
</signal>
<signal name="VCC">
<contactref element="C1" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="E1" pad="14"/>
<contactref element="U$2" pad="A2"/>
<contactref element="R44" pad="2"/>
<contactref element="R45" pad="2"/>
<contactref element="R46" pad="2"/>
<contactref element="E2" pad="14"/>
<contactref element="R41" pad="2"/>
<contactref element="R42" pad="2"/>
<contactref element="R43" pad="2"/>
<contactref element="R47" pad="2"/>
</signal>
<signal name="N$1">
<contactref element="E1" pad="1"/>
<contactref element="E1" pad="9"/>
<contactref element="E1" pad="2"/>
<contactref element="E1" pad="6"/>
<contactref element="U$2" pad="R1"/>
</signal>
<signal name="N$2">
<contactref element="U$2" pad="V2"/>
<contactref element="E1" pad="5"/>
<contactref element="E1" pad="8"/>
</signal>
<signal name="N$4">
<contactref element="E1" pad="11"/>
<contactref element="C11" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="C11" pad="2"/>
<contactref element="E1" pad="4"/>
<contactref element="R44" pad="1"/>
<contactref element="D13" pad="A"/>
</signal>
<signal name="N$3">
<contactref element="E1" pad="13"/>
<contactref element="E1" pad="12"/>
<contactref element="U$2" pad="U2"/>
</signal>
<signal name="+2.1V">
<contactref element="D13" pad="C"/>
<contactref element="D11" pad="C"/>
<contactref element="R47" pad="1"/>
<contactref element="D15" pad="A"/>
<contactref element="C13" pad="1"/>
<contactref element="D14" pad="C"/>
<contactref element="D12" pad="C"/>
</signal>
<signal name="N$8">
<contactref element="R45" pad="1"/>
<contactref element="Q12" pad="2"/>
<contactref element="C12" pad="2"/>
</signal>
<signal name="N$9">
<contactref element="E1" pad="3"/>
<contactref element="C12" pad="1"/>
</signal>
<signal name="N$6">
<contactref element="E1" pad="10"/>
<contactref element="R46" pad="1"/>
<contactref element="Q12" pad="3"/>
<contactref element="D14" pad="A"/>
</signal>
<signal name="N$10">
<contactref element="E2" pad="12"/>
<contactref element="E2" pad="5"/>
<contactref element="E2" pad="13"/>
<contactref element="E2" pad="8"/>
<contactref element="U$2" pad="S1"/>
</signal>
<signal name="N$11">
<contactref element="E2" pad="9"/>
<contactref element="E2" pad="6"/>
<contactref element="U$2" pad="T2"/>
</signal>
<signal name="N$12">
<contactref element="E2" pad="3"/>
<contactref element="C9" pad="1"/>
</signal>
<signal name="N$14">
<contactref element="C9" pad="2"/>
<contactref element="E2" pad="10"/>
<contactref element="R41" pad="1"/>
<contactref element="D11" pad="A"/>
</signal>
<signal name="N$15">
<contactref element="E2" pad="2"/>
<contactref element="E2" pad="1"/>
<contactref element="U$2" pad="S2"/>
</signal>
<signal name="N$17">
<contactref element="R42" pad="1"/>
<contactref element="Q11" pad="2"/>
<contactref element="C10" pad="2"/>
</signal>
<signal name="N$18">
<contactref element="E2" pad="11"/>
<contactref element="C10" pad="1"/>
</signal>
<signal name="N$19">
<contactref element="E2" pad="4"/>
<contactref element="R43" pad="1"/>
<contactref element="Q11" pad="3"/>
<contactref element="D12" pad="A"/>
</signal>
<signal name="-15V">
<contactref element="R38" pad="1"/>
<contactref element="U$2" pad="E2"/>
<contactref element="R40" pad="1"/>
</signal>
<signal name="N$16">
<contactref element="Q1" pad="2"/>
<contactref element="R1" pad="1"/>
<contactref element="Q2" pad="1"/>
</signal>
<signal name="N$20">
<contactref element="Q2" pad="2"/>
<contactref element="D1" pad="A"/>
<contactref element="R2" pad="2"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="N$21">
<contactref element="R2" pad="1"/>
<contactref element="U$2" pad="H1"/>
</signal>
<signal name="N$22">
<contactref element="Q1" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="R9" pad="1"/>
</signal>
<signal name="N$23">
<contactref element="U$2" pad="H2"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="N$24">
<contactref element="R5" pad="2"/>
<contactref element="D2" pad="A"/>
<contactref element="Q4" pad="2"/>
<contactref element="R6" pad="2"/>
</signal>
<signal name="N$25">
<contactref element="R4" pad="1"/>
<contactref element="Q4" pad="1"/>
<contactref element="Q3" pad="2"/>
</signal>
<signal name="N$26">
<contactref element="R8" pad="2"/>
<contactref element="Q3" pad="1"/>
<contactref element="R12" pad="1"/>
</signal>
<signal name="N$27">
<contactref element="R13" pad="1"/>
<contactref element="R12" pad="2"/>
<contactref element="E3" pad="3"/>
</signal>
<signal name="N$28">
<contactref element="R9" pad="2"/>
<contactref element="R10" pad="1"/>
<contactref element="E3" pad="2"/>
</signal>
<signal name="N$29">
<contactref element="R10" pad="2"/>
<contactref element="R11" pad="1"/>
<contactref element="C14" pad="1"/>
</signal>
<signal name="N$30">
<contactref element="R15" pad="2"/>
<contactref element="R14" pad="1"/>
<contactref element="R13" pad="2"/>
</signal>
<signal name="N$31">
<contactref element="Q5" pad="2"/>
<contactref element="E3" pad="8"/>
</signal>
<signal name="N$32">
<contactref element="R14" pad="2"/>
<contactref element="Q5" pad="3"/>
<contactref element="R16" pad="2"/>
</signal>
<signal name="V+">
<contactref element="R1" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="Q1" pad="3"/>
<contactref element="Q3" pad="3"/>
<contactref element="Q5" pad="1"/>
<contactref element="R35" pad="1"/>
<contactref element="R36" pad="2"/>
<contactref element="R18" pad="2"/>
<contactref element="R21" pad="2"/>
<contactref element="Q6" pad="3"/>
<contactref element="Q8" pad="3"/>
<contactref element="Q10" pad="1"/>
<contactref element="E3" pad="7"/>
<contactref element="E4" pad="7"/>
<contactref element="C4" pad="1"/>
<contactref element="C15" pad="1"/>
</signal>
<signal name="V-">
<contactref element="R7" pad="1"/>
<contactref element="R8" pad="1"/>
<contactref element="R38" pad="2"/>
<contactref element="R39" pad="1"/>
<contactref element="R17" pad="1"/>
<contactref element="R24" pad="1"/>
<contactref element="R25" pad="1"/>
<contactref element="R34" pad="1"/>
<contactref element="E4" pad="4"/>
<contactref element="E3" pad="4"/>
<contactref element="C6" pad="2"/>
<contactref element="C3" pad="2"/>
</signal>
<signal name="+15V">
<contactref element="U$2" pad="D2"/>
<contactref element="R35" pad="2"/>
<contactref element="R37" pad="2"/>
</signal>
<signal name="AGND">
<contactref element="D8" pad="A"/>
<contactref element="D9" pad="C"/>
<contactref element="U$2" pad="F2"/>
<contactref element="R6" pad="1"/>
<contactref element="R3" pad="1"/>
<contactref element="R15" pad="1"/>
<contactref element="R23" pad="1"/>
<contactref element="R20" pad="1"/>
<contactref element="R32" pad="1"/>
<contactref element="C7" pad="2"/>
<contactref element="C8" pad="1"/>
</signal>
<signal name="VSS">
<contactref element="R39" pad="2"/>
<contactref element="D9" pad="A"/>
<contactref element="Q2" pad="3"/>
<contactref element="Q4" pad="3"/>
<contactref element="Q7" pad="3"/>
<contactref element="Q9" pad="3"/>
<contactref element="D10" pad="A"/>
</signal>
<signal name="VDD">
<contactref element="R36" pad="1"/>
<contactref element="D8" pad="C"/>
<contactref element="D1" pad="C"/>
<contactref element="D2" pad="C"/>
<contactref element="D4" pad="C"/>
<contactref element="D5" pad="C"/>
<contactref element="D7" pad="C"/>
</signal>
<signal name="N$33">
<contactref element="U$2" pad="J2"/>
<contactref element="R11" pad="2"/>
</signal>
<signal name="N$34">
<contactref element="R16" pad="1"/>
<contactref element="R17" pad="2"/>
<contactref element="U$2" pad="P2"/>
<contactref element="D3" pad="C"/>
</signal>
<signal name="N$7">
<contactref element="Q6" pad="2"/>
<contactref element="R18" pad="1"/>
<contactref element="Q7" pad="1"/>
</signal>
<signal name="N$35">
<contactref element="Q7" pad="2"/>
<contactref element="D4" pad="A"/>
<contactref element="R19" pad="2"/>
<contactref element="R20" pad="2"/>
</signal>
<signal name="N$37">
<contactref element="Q6" pad="1"/>
<contactref element="R24" pad="2"/>
<contactref element="R26" pad="1"/>
</signal>
<signal name="N$39">
<contactref element="R22" pad="2"/>
<contactref element="D5" pad="A"/>
<contactref element="Q9" pad="2"/>
<contactref element="R23" pad="2"/>
</signal>
<signal name="N$40">
<contactref element="R21" pad="1"/>
<contactref element="Q9" pad="1"/>
<contactref element="Q8" pad="2"/>
</signal>
<signal name="N$41">
<contactref element="R25" pad="2"/>
<contactref element="Q8" pad="1"/>
<contactref element="R29" pad="1"/>
</signal>
<signal name="N$42">
<contactref element="R30" pad="1"/>
<contactref element="R29" pad="2"/>
<contactref element="E4" pad="3"/>
</signal>
<signal name="N$43">
<contactref element="R26" pad="2"/>
<contactref element="R27" pad="1"/>
<contactref element="E4" pad="2"/>
</signal>
<signal name="N$44">
<contactref element="R27" pad="2"/>
<contactref element="R28" pad="1"/>
<contactref element="C5" pad="1"/>
</signal>
<signal name="N$45">
<contactref element="R32" pad="2"/>
<contactref element="R31" pad="1"/>
<contactref element="R30" pad="2"/>
</signal>
<signal name="N$46">
<contactref element="Q10" pad="2"/>
<contactref element="E4" pad="8"/>
</signal>
<signal name="N$47">
<contactref element="R31" pad="2"/>
<contactref element="Q10" pad="3"/>
<contactref element="R33" pad="2"/>
</signal>
<signal name="N$48">
<contactref element="R28" pad="2"/>
<contactref element="U$2" pad="L2"/>
</signal>
<signal name="N$49">
<contactref element="R33" pad="1"/>
<contactref element="R34" pad="2"/>
<contactref element="D6" pad="C"/>
<contactref element="U$2" pad="R2"/>
</signal>
<signal name="N$36">
<contactref element="R22" pad="1"/>
<contactref element="U$2" pad="K2"/>
</signal>
<signal name="N$38">
<contactref element="R19" pad="1"/>
<contactref element="U$2" pad="K1"/>
</signal>
<signal name="N$50">
<contactref element="U$2" pad="D1"/>
<contactref element="R37" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="D7" pad="A"/>
</signal>
<signal name="N$51">
<contactref element="U$2" pad="E1"/>
<contactref element="C8" pad="2"/>
<contactref element="D10" pad="C"/>
<contactref element="R40" pad="2"/>
</signal>
<signal name="N$53">
<contactref element="D15" pad="C"/>
<contactref element="D16" pad="A"/>
</signal>
<signal name="N$54">
<contactref element="D17" pad="A"/>
<contactref element="D16" pad="C"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
