<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="8.6.3">
<drawing>
<schematic>
<libraries>
<library name="myLibrary">
<packages>
<package name="LM2660M">
</package>
</packages>
<symbols>
<symbol name="LM2660M">
<pin name="FC"/>
<pin name="CAP+"/>
<pin name="GND"/>
<pin name="CAP-"/>
<pin name="V+"/>
<pin name="OSC"/>
<pin name="LV"/>
<pin name="OUT"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="LM2660M" prefix="LM2660M" uservalue="yes">
<description>Switched Capacitor Voltage Converter
Operating from a wide 1.5-V to 5.5-V supply voltage, the LM2660 uses two low-cost capacitors to provide 100 mA of output current without the cost, size and EMI related to inductor-based converters. With an operating current of only 120 µA and operating efficiency greater than 90% at most loads, the LM2660 provides ideal performance for battery-powered systems. LM2660 devices can be operated directly in parallel to lower output impedance, thus providing more current at a given voltage.

The FC (frequency control) pin selects between a nominal 10-kHz or 80-kHz oscillator frequency. The oscillator frequency can be lowered by adding an external capacitor to the OSC pin. Also, the OSC pin may be used to drive the LM2660 with an external clock up to 150 kHz. Through these methods, output ripple frequency and harmonics may be controlled.

Additionally, the LM2660 may be configured to divide a positive input voltage precisely in half. In this mode, input voltages as high as 11 V may be used.

- Inverts or Doubles Input Supply Voltage
- Narrow SOIC and VSSOP Packages
- 6.5-Ω Typical Output Resistance
- 88% Typical Conversion Efficiency at 100 mA
- Selectable Oscillator Frequency: 10 kHz/80 kHz
- Optional External Oscillator Input
http://www.ti.com/product/LM2660/description</description>
<gates>
<gate name="G$1" symbol="LM2660M"/>
</gates>
<devices>
<device name="" package="LM2660M">
<connects>
<connect gate="G$1" pin="CAP+" pad="2"/>
<connect gate="G$1" pin="CAP-" pad="4"/>
<connect gate="G$1" pin="FC" pad="1"/>
<connect gate="G$1" pin="GND" pad="3"/>
<connect gate="G$1" pin="LV" pad="6"/>
<connect gate="G$1" pin="OSC" pad="7"/>
<connect gate="G$1" pin="OUT" pad="5"/>
<connect gate="G$1" pin="V+" pad="8"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="fab">
<packages>
<package name="C1206">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="C1206K">
<description>&lt;b&gt;Ceramic Chip Capacitor KEMET 1206 reflow solder&lt;/b&gt;&lt;p&gt;
Metric Code Size 3216</description>
</package>
<package name="C1206FAB">
</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>
<package name="2X02SMD">
</package>
</packages>
<symbols>
<symbol name="C-US">
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
</symbol>
<symbol name="R-US">
<pin name="2" direction="pas"/>
<pin name="1" direction="pas"/>
</symbol>
<symbol name="PINH2X2">
<pin name="1" direction="pas" function="dot"/>
<pin name="2" direction="pas" function="dot"/>
<pin name="3" direction="pas" function="dot"/>
<pin name="4" direction="pas" function="dot"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="CAP-US" prefix="C">
<gates>
<gate name="G$1" symbol="C-US"/>
</gates>
<devices>
<device name="1206" package="C1206">
<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="1206K" package="C1206K">
<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="C1206FAB">
<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>
<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>
<deviceset name="PINHD-2X2-SMD">
<gates>
<gate name="G$1" symbol="PINH2X2"/>
</gates>
<devices>
<device name="" package="2X02SMD">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
<connect gate="G$1" pin="3" pad="3"/>
<connect gate="G$1" pin="4" pad="4"/>
</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>
<symbol name="-5V">
<pin name="-5V" direction="sup"/>
</symbol>
<symbol name="+5V">
<pin name="+5V" 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>
<deviceset name="-5V" prefix="P-">
<description>&lt;b&gt;SUPPLY SYMBOL&lt;/b&gt;</description>
<gates>
<gate name="1" symbol="-5V"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="+5V" prefix="P+">
<description>&lt;b&gt;SUPPLY SYMBOL&lt;/b&gt;</description>
<gates>
<gate name="1" symbol="+5V"/>
</gates>
<devices>
<device name="">
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
<library name="con-coax">
<description>&lt;b&gt;Coax Connectors&lt;/b&gt;&lt;p&gt;
Radiall  and M/A COM.&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="AMP_227161">
<description>&lt;b&gt;JACK,  RIGHT ANGLE, 50 OHM, PCB, BNC&lt;/b&gt;&lt;p&gt;
Source: amp_227161.pdf</description>
</package>
</packages>
<symbols>
<symbol name="BU-BNC">
<pin name="1" direction="pas"/>
<pin name="2" direction="pas"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="?227161*" prefix="X">
<description>&lt;b&gt;JACK,  RIGHT ANGLE, 50 OHM, PCB, BNC&lt;/b&gt;&lt;p&gt;
Source: amp_227161.pdf</description>
<gates>
<gate name="G$1" symbol="BU-BNC"/>
</gates>
<devices>
<device name="1-" package="AMP_227161">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name="-0">
<attribute name="MF" value="TYCO ELECTRONICS"/>
<attribute name="MPN" value="1-227161"/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="33B3200"/>
</technology>
<technology name="-2">
<attribute name="MF" value=""/>
<attribute name="MPN" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="unknown"/>
</technology>
<technology name="-6">
<attribute name="MF" value="TYCO ELECTRONICS"/>
<attribute name="MPN" value="1-227161-6"/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="09H7854"/>
</technology>
<technology name="-7">
<attribute name="MF" value="TYCO ELECTRONICS"/>
<attribute name="MPN" value="1-227161-7"/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="09H7855"/>
</technology>
</technologies>
</device>
<device name="" package="AMP_227161">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="2" pad="2"/>
</connects>
<technologies>
<technology name="-8">
<attribute name="MF" value=""/>
<attribute name="MPN" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="unknown"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</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="TO99">
<description>&lt;b&gt;Metal Can Package&lt;/b&gt;</description>
</package>
<package name="SO08">
<description>&lt;b&gt;Small Outline Package 8&lt;/b&gt;&lt;br&gt;
NS Package M08A</description>
</package>
<package name="DIL08">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
<symbols>
<symbol name="2NUL2CMP">
<pin name="ON/CMP" direction="pas"/>
<pin name="-IN" direction="in"/>
<pin name="+IN" direction="in"/>
<pin name="ON" direction="pas"/>
<pin name="OUT" direction="out"/>
<pin name="CMP" direction="pas"/>
<pin name="V+" direction="pwr"/>
<pin name="V-" direction="pwr"/>
</symbol>
<symbol name="2NUL">
<pin name="ON2" direction="pas"/>
<pin name="ON1" direction="pas"/>
<pin name="-IN" direction="in"/>
<pin name="+IN" direction="in"/>
<pin name="OUT" direction="out"/>
<pin name="OPT" direction="pas"/>
<pin name="V+" direction="pwr"/>
<pin name="V-" direction="pwr"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="CA3140" prefix="IC">
<description>&lt;b&gt;OP AMP&lt;/b&gt;</description>
<gates>
<gate name="A" symbol="2NUL2CMP"/>
</gates>
<devices>
<device name="T" package="TO99">
<connects>
<connect gate="A" pin="+IN" pad="3"/>
<connect gate="A" pin="-IN" pad="2"/>
<connect gate="A" pin="CMP" pad="8"/>
<connect gate="A" pin="ON" pad="5"/>
<connect gate="A" pin="ON/CMP" pad="1"/>
<connect gate="A" pin="OUT" pad="6"/>
<connect gate="A" pin="V+" pad="7"/>
<connect gate="A" pin="V-" pad="4"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="D" package="SO08">
<connects>
<connect gate="A" pin="+IN" pad="3"/>
<connect gate="A" pin="-IN" pad="2"/>
<connect gate="A" pin="CMP" pad="8"/>
<connect gate="A" pin="ON" pad="5"/>
<connect gate="A" pin="ON/CMP" pad="1"/>
<connect gate="A" pin="OUT" pad="6"/>
<connect gate="A" pin="V+" pad="7"/>
<connect gate="A" pin="V-" pad="4"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="N" package="DIL08">
<connects>
<connect gate="A" pin="+IN" pad="3"/>
<connect gate="A" pin="-IN" pad="2"/>
<connect gate="A" pin="CMP" pad="8"/>
<connect gate="A" pin="ON" pad="5"/>
<connect gate="A" pin="ON/CMP" pad="1"/>
<connect gate="A" pin="OUT" pad="6"/>
<connect gate="A" pin="V+" pad="7"/>
<connect gate="A" pin="V-" pad="4"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="TL081" prefix="IC">
<description>&lt;b&gt;OP AMP&lt;/b&gt;</description>
<gates>
<gate name="A" symbol="2NUL"/>
</gates>
<devices>
<device name="P" package="DIL08">
<connects>
<connect gate="A" pin="+IN" pad="3"/>
<connect gate="A" pin="-IN" pad="2"/>
<connect gate="A" pin="ON1" pad="1"/>
<connect gate="A" pin="ON2" pad="5"/>
<connect gate="A" pin="OPT" pad="8"/>
<connect gate="A" pin="OUT" pad="6"/>
<connect gate="A" pin="V+" pad="7"/>
<connect gate="A" pin="V-" pad="4"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
<device name="D" package="SO08">
<connects>
<connect gate="A" pin="+IN" pad="3"/>
<connect gate="A" pin="-IN" pad="2"/>
<connect gate="A" pin="ON1" pad="1"/>
<connect gate="A" pin="ON2" pad="5"/>
<connect gate="A" pin="OPT" pad="8"/>
<connect gate="A" pin="OUT" pad="6"/>
<connect gate="A" pin="V+" pad="7"/>
<connect gate="A" pin="V-" pad="4"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<parts>
<part name="LM2660M1" library="myLibrary" deviceset="LM2660M" device=""/>
<part name="C1" library="fab" deviceset="CAP-US" device="1206FAB" value="100uF"/>
<part name="C2" library="fab" deviceset="CAP-US" device="1206FAB" value="100uF"/>
<part name="X1" library="con-coax" deviceset="?227161*" device="1-" technology="-0"/>
<part name="R1" library="fab" deviceset="RES-US" device="1206FAB" value="4.7M"/>
<part name="R2" library="fab" deviceset="RES-US" device="1206FAB" value="2.2k"/>
<part name="R3" library="fab" deviceset="RES-US" device="1206FAB" value="5k"/>
<part name="R4" library="fab" deviceset="RES-US" device="1206FAB" value="1k"/>
<part name="R5" library="fab" deviceset="RES-US" device="1206FAB" value="30k"/>
<part name="R6" library="fab" deviceset="RES-US" device="1206FAB" value="75k"/>
<part name="R7" library="fab" deviceset="RES-US" device="1206FAB" value="30k"/>
<part name="C3" library="fab" deviceset="CAP-US" device="1206FAB" value="2.2nF"/>
<part name="C4" library="fab" deviceset="CAP-US" device="1206FAB" value="10uF"/>
<part name="C5" library="fab" deviceset="CAP-US" device="1206FAB" value="100nF"/>
<part name="C6" library="fab" deviceset="CAP-US" device="1206FAB" value="10uF"/>
<part name="C7" library="fab" deviceset="CAP-US" device="1206FAB" value="100nF"/>
<part name="C8" library="fab" deviceset="CAP-US" device="1206FAB" value="10uF"/>
<part name="C9" library="fab" deviceset="CAP-US" device="1206FAB" value="100nF"/>
<part name="IC1" library="linear" deviceset="CA3140" device="D"/>
<part name="C10" library="fab" deviceset="CAP-US" device="1206FAB" value="10uF"/>
<part name="C11" library="fab" deviceset="CAP-US" device="1206FAB" value="100nF"/>
<part name="C12" library="fab" deviceset="CAP-US" device="1206FAB" value="1uF"/>
<part name="IC2" library="linear" deviceset="TL081" device="D"/>
<part name="U$1" library="fab" deviceset="PINHD-2X2-SMD" device="" value="2X2-SMD"/>
<part name="P-2" library="supply1" deviceset="-5V" device=""/>
<part name="P-3" library="supply1" deviceset="-5V" device=""/>
<part name="P-4" library="supply1" deviceset="-5V" device=""/>
<part name="P-5" library="supply1" deviceset="-5V" device=""/>
<part name="P+1" library="supply1" deviceset="+5V" device=""/>
<part name="P+2" library="supply1" deviceset="+5V" device=""/>
<part name="P+3" library="supply1" deviceset="+5V" device=""/>
<part name="P+4" library="supply1" deviceset="+5V" device=""/>
<part name="GND11" library="supply1" deviceset="GND" device=""/>
<part name="GND12" library="supply1" deviceset="GND" device=""/>
<part name="GND13" library="supply1" deviceset="GND" device=""/>
<part name="GND14" library="supply1" deviceset="GND" device=""/>
<part name="GND15" library="supply1" deviceset="GND" device=""/>
<part name="GND16" library="supply1" deviceset="GND" device=""/>
<part name="GND17" library="supply1" deviceset="GND" device=""/>
<part name="GND18" library="supply1" deviceset="GND" device=""/>
<part name="GND19" library="supply1" deviceset="GND" device=""/>
<part name="GND20" library="supply1" deviceset="GND" device=""/>
<part name="P-1" library="supply1" deviceset="-5V" device=""/>
<part name="P-6" library="supply1" deviceset="-5V" device=""/>
<part name="R8" library="fab" deviceset="RES-US" device="1206FAB" value="0"/>
<part name="GND1" library="supply1" deviceset="GND" device=""/>
<part name="GND21" library="supply1" deviceset="GND" device=""/>
</parts>
<sheets>
<sheet>
<plain>
</plain>
<busses>
</busses>
<nets>
<net name="N$1">
<segment>
<pinref part="LM2660M1" gate="G$1" pin="CAP+"/>
<pinref part="C1" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$2">
<segment>
<pinref part="C1" gate="G$1" pin="2"/>
<pinref part="LM2660M1" gate="G$1" pin="CAP-"/>
</segment>
</net>
<net name="N$3">
<segment>
<pinref part="X1" gate="G$1" pin="1"/>
<pinref part="R1" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$4">
<segment>
<pinref part="R1" gate="G$1" pin="2"/>
<pinref part="C3" gate="G$1" pin="2"/>
<pinref part="IC1" gate="A" pin="+IN"/>
</segment>
</net>
<net name="N$6">
<segment>
<pinref part="IC1" gate="A" pin="OUT"/>
<pinref part="R2" gate="G$1" pin="2"/>
<pinref part="C12" gate="G$1" pin="2"/>
<pinref part="R5" gate="G$1" pin="2"/>
</segment>
</net>
<net name="N$7">
<segment>
<pinref part="R2" gate="G$1" pin="1"/>
<pinref part="R3" gate="G$1" pin="2"/>
</segment>
</net>
<net name="N$8">
<segment>
<pinref part="IC1" gate="A" pin="-IN"/>
<pinref part="C12" gate="G$1" pin="1"/>
</segment>
</net>
<net name="N$10">
<segment>
<pinref part="R5" gate="G$1" pin="1"/>
<pinref part="R6" gate="G$1" pin="1"/>
<pinref part="R7" gate="G$1" pin="1"/>
<pinref part="IC2" gate="A" pin="-IN"/>
</segment>
</net>
<net name="N$16">
<segment>
<pinref part="R7" gate="G$1" pin="2"/>
<pinref part="IC2" gate="A" pin="OUT"/>
<pinref part="U$1" gate="G$1" pin="1"/>
</segment>
</net>
<net name="-5V">
<segment>
<pinref part="LM2660M1" gate="G$1" pin="OUT"/>
<pinref part="C2" gate="G$1" pin="2"/>
</segment>
<segment>
<pinref part="C10" gate="G$1" pin="2"/>
<pinref part="C11" gate="G$1" pin="2"/>
<pinref part="IC1" gate="A" pin="V-"/>
</segment>
<segment>
<pinref part="R6" gate="G$1" pin="2"/>
</segment>
<segment>
<pinref part="IC2" gate="A" pin="V-"/>
<pinref part="C8" gate="G$1" pin="1"/>
<pinref part="C9" gate="G$1" pin="1"/>
</segment>
<segment>
<pinref part="R8" gate="G$1" pin="2"/>
<pinref part="P-6" gate="1" pin="-5V"/>
</segment>
<segment>
<pinref part="P-1" gate="1" pin="-5V"/>
<pinref part="R8" gate="G$1" pin="1"/>
</segment>
</net>
<net name="+5V">
<segment>
<pinref part="LM2660M1" gate="G$1" pin="V+"/>
<pinref part="P+1" gate="1" pin="+5V"/>
</segment>
<segment>
<pinref part="IC1" gate="A" pin="V+"/>
<pinref part="C4" gate="G$1" pin="2"/>
<pinref part="C5" gate="G$1" pin="2"/>
<pinref part="P+4" gate="1" pin="+5V"/>
</segment>
<segment>
<pinref part="IC2" gate="A" pin="V+"/>
<pinref part="C6" gate="G$1" pin="1"/>
<pinref part="C7" gate="G$1" pin="1"/>
<pinref part="P+3" gate="1" pin="+5V"/>
</segment>
<segment>
<pinref part="U$1" gate="G$1" pin="2"/>
<pinref part="P+2" gate="1" pin="+5V"/>
</segment>
</net>
<net name="GND">
<segment>
<pinref part="LM2660M1" gate="G$1" pin="GND"/>
<pinref part="GND11" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C2" gate="G$1" pin="1"/>
<pinref part="GND12" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="LM2660M1" gate="G$1" pin="LV"/>
<pinref part="GND13" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C10" gate="G$1" pin="1"/>
<pinref part="C11" gate="G$1" pin="1"/>
<pinref part="GND14" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="X1" gate="G$1" pin="2"/>
<pinref part="GND15" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C3" gate="G$1" pin="1"/>
<pinref part="GND16" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C5" gate="G$1" pin="1"/>
<pinref part="C4" gate="G$1" pin="1"/>
<pinref part="GND17" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C6" gate="G$1" pin="2"/>
<pinref part="C7" gate="G$1" pin="2"/>
<pinref part="GND18" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="U$1" gate="G$1" pin="3"/>
<pinref part="GND20" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="C9" gate="G$1" pin="2"/>
<pinref part="C8" gate="G$1" pin="2"/>
<pinref part="GND19" gate="1" pin="GND"/>
</segment>
<segment>
<pinref part="GND1" gate="1" pin="GND"/>
<pinref part="R4" gate="G$1" pin="2"/>
</segment>
<segment>
<pinref part="IC2" gate="A" pin="+IN"/>
</segment>
</net>
<net name="N$9">
<segment>
<pinref part="R3" gate="G$1" pin="1"/>
<pinref part="R4" gate="G$1" pin="1"/>
</segment>
</net>
</nets>
</sheet>
</sheets>
</schematic>
</drawing>
</eagle>
