EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:nocko
LIBS:bmi-8ch-cache
EELAYER 25 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 5
Title "Polymer Sensor Amplifier"
Date "2017-03-26"
Rev "AB"
Comp "Monadnock Systems"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Sheet
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U 58D4647E
F0 "channel0-1" 60
F1 "channel0.sch" 60
F2 "Channel0" O R 2200 2400 60 
F3 "Channel1" O R 2200 2530 60 
$EndSheet
Text Notes 6190 1400 0    60   ~ 0
Excitation Supply
Text Notes 6190 1450 0    39   ~ 0
Now directly from battery
$Comp
L C C102
U 1 1 58D54979
P 7570 4250
F 0 "C102" H 7595 4350 50  0000 L CNN
F 1 "1µF" H 7595 4150 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 7608 4100 50  0001 C CNN
F 3 "" H 7570 4250 50  0001 C CNN
	1    7570 4250
	1    0    0    -1  
$EndComp
$Comp
L C C103
U 1 1 58D54A48
P 7570 4750
F 0 "C103" H 7595 4850 50  0000 L CNN
F 1 "1µF" H 7595 4650 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 7608 4600 50  0001 C CNN
F 3 "" H 7570 4750 50  0001 C CNN
	1    7570 4750
	1    0    0    -1  
$EndComp
Text Notes 6970 3900 0    60   ~ 0
Virtual Ground
Text Notes 7630 5300 0    60   ~ 0
Noise Density: 12nV/√Hz\nVoltage Noise (0.1-10Hz): 0.2uV p-p\nOffset: <125uV\nDrift: <1.2uV/°C
$Comp
L CONN_01X02 J102
U 1 1 58D60190
P 6940 1650
F 0 "J102" H 6940 1800 50  0000 C CNN
F 1 "Battery" V 7040 1650 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 6940 1650 50  0001 C CNN
F 3 "" H 6940 1650 50  0001 C CNN
	1    6940 1650
	-1   0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG01
U 1 1 58D603F8
P 7890 1600
F 0 "#FLG01" H 7890 1675 50  0001 C CNN
F 1 "PWR_FLAG" H 7690 1700 50  0001 C CNN
F 2 "" H 7890 1600 50  0001 C CNN
F 3 "" H 7890 1600 50  0001 C CNN
	1    7890 1600
	-1   0    0    1   
$EndComp
$Comp
L C C104
U 1 1 58D627F1
P 5540 4410
F 0 "C104" H 5565 4510 50  0000 L CNN
F 1 "0.1µF" H 5565 4310 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 5578 4260 50  0001 C CNN
F 3 "" H 5540 4410 50  0001 C CNN
	1    5540 4410
	1    0    0    -1  
$EndComp
$Sheet
S 1230 3090 950  480 
U 58D6CBCD
F0 "channel2-3" 60
F1 "channel2.sch" 60
F2 "Channel2" O R 2180 3240 60 
F3 "Channel3" O R 2180 3370 60 
$EndSheet
$Sheet
S 1210 3960 990  430 
U 58D6D2D8
F0 "channel4-5" 60
F1 "channel4.sch" 60
F2 "Channel4" O R 2200 4090 60 
F3 "Channel5" O R 2200 4190 60 
$EndSheet
$Sheet
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F0 "channel6-7" 60
F1 "channel6.sch" 60
F2 "Channel6" O R 2210 4870 60 
F3 "Channel7" O R 2210 5010 60 
$EndSheet
$Comp
L CONN_01X01 J106
U 1 1 58D6FBAE
P 9490 1930
F 0 "J106" H 9590 1930 50  0000 C CNN
F 1 "CONN_01X01" V 9590 1930 50  0001 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 9490 1930 50  0001 C CNN
F 3 "" H 9490 1930 50  0001 C CNN
	1    9490 1930
	1    0    0    1   
$EndComp
$Comp
L CONN_01X01 J105
U 1 1 58D702C5
P 9490 1780
F 0 "J105" H 9590 1780 50  0000 C CNN
F 1 "CONN_01X01" V 9590 1780 50  0001 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 9490 1780 50  0001 C CNN
F 3 "" H 9490 1780 50  0001 C CNN
	1    9490 1780
	1    0    0    1   
$EndComp
$Comp
L CONN_01X01 J104
U 1 1 58D70306
P 9490 1630
F 0 "J104" H 9590 1630 50  0000 C CNN
F 1 "CONN_01X01" V 9590 1630 50  0001 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 9490 1630 50  0001 C CNN
F 3 "" H 9490 1630 50  0001 C CNN
	1    9490 1630
	1    0    0    1   
$EndComp
$Comp
L CONN_01X01 J103
U 1 1 58D7034C
P 9490 1480
F 0 "J103" H 9590 1480 50  0000 C CNN
F 1 "CONN_01X01" V 9590 1480 50  0001 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 9490 1480 50  0001 C CNN
F 3 "" H 9490 1480 50  0001 C CNN
	1    9490 1480
	1    0    0    1   
$EndComp
$Comp
L GNDA #PWR02
U 1 1 58D7085C
P 9190 2080
F 0 "#PWR02" H 9190 1830 50  0001 C CNN
F 1 "GNDA" H 9190 1930 50  0000 C CNN
F 2 "" H 9190 2080 50  0001 C CNN
F 3 "" H 9190 2080 50  0001 C CNN
	1    9190 2080
	1    0    0    -1  
$EndComp
Text Notes 9290 1380 0    60   ~ 0
Mounting Holes
$Comp
L TEST_1P J114
U 1 1 58D70C8E
P 7820 4500
F 0 "J114" H 7820 4770 50  0000 C CNN
F 1 "VGND" H 7820 4700 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Big" H 8020 4500 50  0001 C CNN
F 3 "" H 8020 4500 50  0001 C CNN
	1    7820 4500
	1    0    0    -1  
$EndComp
$Comp
L CONN_01X12 J112
U 1 1 58D765D3
P 3170 3740
F 0 "J112" V 3280 4250 50  0000 C CNN
F 1 "ANALOG_OUT" V 3270 3740 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x12_Pitch2.54mm" H 3170 3740 50  0001 C CNN
F 3 "" H 3170 3740 50  0001 C CNN
	1    3170 3740
	1    0    0    -1  
$EndComp
$Comp
L GNDA #PWR03
U 1 1 58D76D50
P 2970 3390
F 0 "#PWR03" H 2970 3140 50  0001 C CNN
F 1 "GNDA" H 2970 3240 50  0000 C CNN
F 2 "" H 2970 3390 50  0001 C CNN
F 3 "" H 2970 3390 50  0001 C CNN
	1    2970 3390
	0    1    1    0   
$EndComp
$Comp
L GNDA #PWR04
U 1 1 58D76DD7
P 2970 3690
F 0 "#PWR04" H 2970 3440 50  0001 C CNN
F 1 "GNDA" H 2970 3540 50  0000 C CNN
F 2 "" H 2970 3690 50  0001 C CNN
F 3 "" H 2970 3690 50  0001 C CNN
	1    2970 3690
	0    1    1    0   
$EndComp
$Comp
L GNDA #PWR05
U 1 1 58D77F82
P 2970 4290
F 0 "#PWR05" H 2970 4040 50  0001 C CNN
F 1 "GNDA" H 2970 4140 50  0000 C CNN
F 2 "" H 2970 4290 50  0001 C CNN
F 3 "" H 2970 4290 50  0001 C CNN
	1    2970 4290
	0    1    1    0   
$EndComp
$Comp
L GNDA #PWR06
U 1 1 58D78218
P 2970 3990
F 0 "#PWR06" H 2970 3740 50  0001 C CNN
F 1 "GNDA" H 2970 3840 50  0000 C CNN
F 2 "" H 2970 3990 50  0001 C CNN
F 3 "" H 2970 3990 50  0001 C CNN
	1    2970 3990
	0    1    1    0   
$EndComp
$Comp
L V+ #PWR07
U 1 1 58D7E8FC
P 5820 4000
F 0 "#PWR07" H 5820 3850 50  0001 C CNN
F 1 "V+" H 5820 4140 50  0000 C CNN
F 2 "" H 5820 4000 50  0000 C CNN
F 3 "" H 5820 4000 50  0000 C CNN
	1    5820 4000
	1    0    0    -1  
$EndComp
$Comp
L V- #PWR08
U 1 1 58D7EC90
P 5820 4900
F 0 "#PWR08" H 5820 4750 50  0001 C CNN
F 1 "V-" H 5820 5040 50  0000 C CNN
F 2 "" H 5820 4900 50  0000 C CNN
F 3 "" H 5820 4900 50  0000 C CNN
	1    5820 4900
	-1   0    0    1   
$EndComp
$Comp
L GNDA #PWR09
U 1 1 58D7EF65
P 8020 4500
F 0 "#PWR09" H 8020 4250 50  0001 C CNN
F 1 "GNDA" H 8020 4350 50  0000 C CNN
F 2 "" H 8020 4500 50  0001 C CNN
F 3 "" H 8020 4500 50  0001 C CNN
	1    8020 4500
	1    0    0    -1  
$EndComp
$Comp
L AD8622 U101
U 1 1 58D8019A
P 6870 4500
F 0 "U101" H 7070 4650 50  0000 L CNN
F 1 "AD8622" H 7070 4350 50  0000 L CNN
F 2 "Housings_SSOP:MSOP-8_3x3mm_Pitch0.65mm" H 6870 4500 50  0001 C CNN
F 3 "" H 6870 4500 50  0001 C CNN
	1    6870 4500
	1    0    0    -1  
$EndComp
$Comp
L V+ #PWR010
U 1 1 58D80748
P 7890 1600
F 0 "#PWR010" H 7890 1450 50  0001 C CNN
F 1 "V+" H 7890 1740 50  0000 C CNN
F 2 "" H 7890 1600 50  0000 C CNN
F 3 "" H 7890 1600 50  0000 C CNN
	1    7890 1600
	1    0    0    -1  
$EndComp
$Comp
L V- #PWR011
U 1 1 58D807E6
P 7890 2000
F 0 "#PWR011" H 7890 1850 50  0001 C CNN
F 1 "V-" H 7890 2140 50  0000 C CNN
F 2 "" H 7890 2000 50  0000 C CNN
F 3 "" H 7890 2000 50  0000 C CNN
	1    7890 2000
	-1   0    0    1   
$EndComp
$Comp
L AD8622 U101
U 2 1 58D81B44
P 6820 5700
F 0 "U101" H 7020 5850 50  0000 L CNN
F 1 "AD8622" H 7020 5550 50  0000 L CNN
F 2 "Housings_SSOP:MSOP-8_3x3mm_Pitch0.65mm" H 6820 5700 50  0001 C CNN
F 3 "" H 6820 5700 50  0001 C CNN
	2    6820 5700
	1    0    0    -1  
$EndComp
$Comp
L V+ #PWR012
U 1 1 58D81C02
P 6770 5450
F 0 "#PWR012" H 6770 5300 50  0001 C CNN
F 1 "V+" H 6770 5590 50  0000 C CNN
F 2 "" H 6770 5450 50  0000 C CNN
F 3 "" H 6770 5450 50  0000 C CNN
	1    6770 5450
	1    0    0    -1  
$EndComp
$Comp
L V- #PWR013
U 1 1 58D81C79
P 6770 5950
F 0 "#PWR013" H 6770 5800 50  0001 C CNN
F 1 "V-" H 6770 6090 50  0000 C CNN
F 2 "" H 6770 5950 50  0000 C CNN
F 3 "" H 6770 5950 50  0000 C CNN
	1    6770 5950
	-1   0    0    1   
$EndComp
$Comp
L GNDA #PWR014
U 1 1 58D81D91
P 6520 5600
F 0 "#PWR014" H 6520 5350 50  0001 C CNN
F 1 "GNDA" H 6520 5450 50  0000 C CNN
F 2 "" H 6520 5600 50  0001 C CNN
F 3 "" H 6520 5600 50  0001 C CNN
	1    6520 5600
	0    1    1    0   
$EndComp
Text Notes 7270 5650 0    60   ~ 0
Unused
$Comp
L PWR_FLAG #FLG015
U 1 1 58D93F01
P 7890 2000
F 0 "#FLG015" H 7890 2075 50  0001 C CNN
F 1 "PWR_FLAG" H 7690 2100 50  0001 C CNN
F 2 "" H 7890 2000 50  0001 C CNN
F 3 "" H 7890 2000 50  0001 C CNN
	1    7890 2000
	1    0    0    -1  
$EndComp
$Comp
L R_Pack02 RN101
U 1 1 58DA8D84
P 6090 4450
F 0 "RN101" V 5890 4450 50  0000 C CNN
F 1 "100k" V 6190 4450 50  0000 C CNN
F 2 "footprints:Sutumu_2012A" V 6265 4450 50  0001 C CNN
F 3 "" H 6090 4450 50  0001 C CNN
	1    6090 4450
	0    -1   1    0   
$EndComp
$Comp
L Polyfuse F101
U 1 1 58DA9C3F
P 7310 1600
F 0 "F101" V 7210 1600 50  0000 C CNN
F 1 "Polyfuse" V 7410 1600 50  0000 C CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 7360 1400 50  0001 L CNN
F 3 "" H 7310 1600 50  0001 C CNN
	1    7310 1600
	0    -1   -1   0   
$EndComp
$Comp
L D D101
U 1 1 58DA9D32
P 7480 1800
F 0 "D101" H 7480 1900 50  0000 C CNN
F 1 "D" H 7480 1700 50  0000 C CNN
F 2 "Diodes_SMD:D_SOD-123" H 7480 1800 50  0001 C CNN
F 3 "" H 7480 1800 50  0001 C CNN
	1    7480 1800
	0    1    1    0   
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
	7570 4000 7570 4100
Connection ~ 6820 4000
Wire Wire Line
	7570 4400 7570 4600
Connection ~ 7570 4500
Wire Wire Line
	7420 4500 7420 4800
Wire Wire Line
	7420 4800 6570 4800
Wire Wire Line
	7140 1700 7140 2000
Wire Wire Line
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Wire Wire Line
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Connection ~ 9290 1630
Connection ~ 9290 1780
Connection ~ 9290 1930
Wire Wire Line
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Connection ~ 5820 4900
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 7820 4500
Wire Wire Line
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Connection ~ 6820 4900
Connection ~ 7420 4500
Wire Wire Line
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Wire Wire Line
	5540 4000 5540 4260
Connection ~ 5820 4000
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
	5890 4450 5820 4450
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
	6570 4400 6290 4400
Connection ~ 6290 4400
Wire Wire Line
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Wire Wire Line
	7460 1600 7890 1600
Wire Wire Line
	7480 1950 7480 2000
Connection ~ 7480 2000
Wire Wire Line
	7480 1650 7480 1600
Connection ~ 7480 1600
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
	2570 4090 2970 4090
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
	2680 4190 2970 4190
$EndSCHEMATC