<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.2.2">
<drawing>
<schematic>
<libraries>
<library name="pinhead">
<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="1X03">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X03/90">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
<symbols>
<symbol name="PINHD3">
<pin name="1" direction="pas" function="dot"/>
<pin name="2" direction="pas" function="dot"/>
<pin name="3" direction="pas" function="dot"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="PINHD-1X3" prefix="JP" uservalue="yes">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
<gates>
<gate name="A" symbol="PINHD3"/>
</gates>
<devices>
<device name="" package="1X03">
<connects>
<connect gate="A" pin="1" pad="1"/>
<connect gate="A" pin="2" pad="2"/>
<connect gate="A" pin="3" pad="3"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="/90" package="1X03/90">
<connects>
<connect gate="A" pin="1" pad="1"/>
<connect gate="A" pin="2" pad="2"/>
<connect gate="A" pin="3" pad="3"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="fab">
<packages>
<package name="CSP-4PIN">
<description>Knowles SPU0414HR5H-SB

MEMS microphone, SiSonic series</description>
</package>
<package name="C1206">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="C1206FAB">
</package>
<package name="C2220">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="SOT23">
<description>&lt;b&gt;SOT 23&lt;/b&gt;</description>
</package>
<package name="R1206">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;</description>
</package>
<package name="R1206W">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
wave soldering</description>
</package>
<package name="R1206FAB">
</package>
</packages>
<symbols>
<symbol name="MEMS_MIC_ANALOG">
<description>Knowles SPU0414HR5H-SB

Amplified SiSonic (TM) Microphone</description>
<pin name="OUT"/>
<pin name="GND"/>
<pin name="GAIN"/>
<pin name="VDD"/>
</symbol>
<symbol name="CAP-NONPOLARIZED">
<description>non-polarized capacitor</description>
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
</symbol>
<symbol name="REGULATOR">
<pin name="IN"/>
<pin name="GND"/>
<pin name="OUT"/>
</symbol>
<symbol name="R-US">
<pin name="2" direction="pas"/>
<pin name="1" direction="pas"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="MEMS_MIC_SPU0414HR5H-SB">
<gates>
<gate name="G$1" symbol="MEMS_MIC_ANALOG"/>
</gates>
<devices>
<device name="" package="CSP-4PIN">
<connects>
<connect gate="G$1" pin="GAIN" pad="P$3"/>
<connect gate="G$1" pin="GND" pad="P$2"/>
<connect gate="G$1" pin="OUT" pad="P$4"/>
<connect gate="G$1" pin="VDD" pad="P$1"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="CAP-UNPOLARIZED" prefix="C" uservalue="yes">
<gates>
<gate name="&gt;NAME" symbol="CAP-NONPOLARIZED"/>
</gates>
<devices>
<device name="" package="C1206">
<connects>
<connect gate="&gt;NAME" pin="1" pad="1"/>
<connect gate="&gt;NAME" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="FAB" package="C1206FAB">
<connects>
<connect gate="&gt;NAME" pin="1" pad="1"/>
<connect gate="&gt;NAME" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="2220" package="C2220">
<connects>
<connect gate="&gt;NAME" pin="1" pad="1"/>
<connect gate="&gt;NAME" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="REGULATOR" prefix="IC" uservalue="yes">
<gates>
<gate name="G$1" symbol="REGULATOR"/>
</gates>
<devices>
<device name="SOT23" package="SOT23">
<connects>
<connect gate="G$1" pin="GND" pad="3"/>
<connect gate="G$1" pin="IN" pad="2"/>
<connect gate="G$1" pin="OUT" pad="1"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="RES-US" prefix="R" uservalue="yes">
<description>&lt;b&gt;Resistor (US Symbol)&lt;/b&gt;
&lt;p&gt;
Variants with postfix FAB are widened to allow the routing of internal traces</description>
<gates>
<gate name="G$1" symbol="R-US"/>
</gates>
<devices>
<device name="1206" package="R1206">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="1206W" package="R1206W">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="1206FAB" package="R1206FAB">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="supply1">
<description>&lt;b&gt;Supply Symbols&lt;/b&gt;&lt;p&gt;
 GND, VCC, 0V, +5V, -5V, etc.&lt;p&gt;
 Please keep in mind, that these devices are necessary for the
 automatic wiring of the supply signals.&lt;p&gt;
 The pin name defined in the symbol is identical to the net which is to be wired automatically.&lt;p&gt;
 In this library the device names are the same as the pin names of the symbols, therefore the correct signal names appear next to the supply symbols in the schematic.&lt;p&gt;
 &lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
</packages>
<symbols>
<symbol name="GND">
<pin name="GND" direction="sup"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="GND" prefix="GND">
<description>&lt;b&gt;SUPPLY SYMBOL&lt;/b&gt;</description>
<gates>
<gate name="1" symbol="GND"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<parts>
<part name="JP1" library="pinhead" deviceset="PINHD-1X3" device=""/>
<part name="U$1" library="fab" deviceset="MEMS_MIC_SPU0414HR5H-SB" device=""/>
<part name="C1" library="fab" deviceset="CAP-UNPOLARIZED" device="FAB" value="10uF"/>
<part name="C2" library="fab" deviceset="CAP-UNPOLARIZED" device="FAB" value="0.1uF"/>
<part name="C3" library="fab" deviceset="CAP-UNPOLARIZED" device="FAB" value="0.1uF"/>
<part name="IC1" library="fab" deviceset="REGULATOR" device="SOT23" value="3.3V"/>
<part name="R1" library="fab" deviceset="RES-US" device="1206FAB" value="1k"/>
<part name="GND1" library="supply1" deviceset="GND" device=""/>
<part name="GND2" library="supply1" deviceset="GND" device=""/>
<part name="GND3" library="supply1" deviceset="GND" device=""/>
<part name="GND4" library="supply1" deviceset="GND" device=""/>
<part name="GND5" library="supply1" deviceset="GND" device=""/>
</parts>
<sheets>
<sheet>
<plain>
</plain>
<busses>
</busses>
<nets>
<net name="VDD">
<segment>
<pinref part="U$1" gate="G$1" pin="VDD"/>
<pinref part="IC1" gate="G$1" pin="OUT"/>
<pinref part="C2" gate="&gt;NAME" pin="1"/>
</segment>
</net>
<net name="N$3">
<segment>
<pinref part="U$1" gate="G$1" pin="GAIN"/>
<pinref part="C1" gate="&gt;NAME" pin="1"/>
</segment>
</net>
<net name="VIN">
<segment>
<pinref part="IC1" gate="G$1" pin="IN"/>
<pinref part="JP1" gate="A" pin="1"/>
</segment>
</net>
<net name="OUT">
<segment>
<pinref part="JP1" gate="A" pin="2"/>
<pinref part="R1" gate="G$1" pin="2"/>
<pinref part="C3" gate="&gt;NAME" pin="1"/>
</segment>
</net>
<net name="N$5">
<segment>
<pinref part="U$1" gate="G$1" pin="OUT"/>
<pinref part="R1" gate="G$1" pin="1"/>
</segment>
</net>
<net name="GND">
<segment>
<pinref part="IC1" gate="G$1" pin="GND"/>
<pinref part="GND3" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="U$1" gate="G$1" pin="GND"/>
<pinref part="C2" gate="&gt;NAME" pin="2"/>
<pinref part="GND1" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C1" gate="&gt;NAME" pin="2"/>
<pinref part="GND2" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C3" gate="&gt;NAME" pin="2"/>
<pinref part="GND4" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="JP1" gate="A" pin="3"/>
<pinref part="GND5" gate="1" pin="GND"/>
</segment>
</net>
</nets>
</sheet>
</sheets>
</schematic>
</drawing>
</eagle>
