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:switches
LIBS:bmi-8ch-cache
EELAYER 25 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 5
Title "Polymer Sensor Amplifier"
Date "2017-03-31"
Rev "AB"
Comp "Monadnock Systems"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Sheet
S 1230 2240 970  440 
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 4130 1270 0    60   ~ 0
Battery Voltage: 5-30V\nOutput is ±Vbatt/2
$Comp
L C C102
U 1 1 58D54979
P 6470 3560
F 0 "C102" H 6495 3660 50  0000 L CNN
F 1 "1µF" H 6495 3460 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 6508 3410 50  0001 C CNN
F 3 "" H 6470 3560 50  0001 C CNN
	1    6470 3560
	1    0    0    -1  
$EndComp
$Comp
L C C103
U 1 1 58D54A48
P 6470 4060
F 0 "C103" H 6495 4160 50  0000 L CNN
F 1 "1µF" H 6495 3960 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 6508 3910 50  0001 C CNN
F 3 "" H 6470 4060 50  0001 C CNN
	1    6470 4060
	1    0    0    -1  
$EndComp
Text Notes 5870 3210 0    60   ~ 0
Virtual Ground
Text Notes 6530 4610 0    60   ~ 0
Noise Density: 12nV/√Hz\nVoltage Noise (0.1-10Hz): 0.2μV p-p\nDrift: <1.2μV/°C\nSupply Current: <250μA
$Comp
L CONN_01X02 J102
U 1 1 58D60190
P 4670 1730
F 0 "J102" H 4680 1520 50  0000 C CNN
F 1 "Battery" V 4770 1730 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 4670 1730 50  0001 C CNN
F 3 "" H 4670 1730 50  0001 C CNN
	1    4670 1730
	-1   0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG101
U 1 1 58D603F8
P 6020 1580
F 0 "#FLG101" H 6020 1655 50  0001 C CNN
F 1 "PWR_FLAG" H 5820 1680 50  0001 C CNN
F 2 "" H 6020 1580 50  0001 C CNN
F 3 "" H 6020 1580 50  0001 C CNN
	1    6020 1580
	0    1    1    0   
$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
S 1220 4740 990  420 
U 58D6D794
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 #PWR103
U 1 1 58D7085C
P 9190 2080
F 0 "#PWR103" 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 6720 3810
F 0 "J114" H 6720 4080 50  0000 C CNN
F 1 "VGND" H 6720 4010 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Big" H 6920 3810 50  0001 C CNN
F 3 "" H 6920 3810 50  0001 C CNN
	1    6720 3810
	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 #PWR105
U 1 1 58D76D50
P 2970 3390
F 0 "#PWR105" 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 #PWR106
U 1 1 58D76DD7
P 2970 3690
F 0 "#PWR106" 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 #PWR110
U 1 1 58D77F82
P 2970 4290
F 0 "#PWR110" 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 #PWR108
U 1 1 58D78218
P 2970 3990
F 0 "#PWR108" 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+ #PWR104
U 1 1 58D7E8FC
P 4720 3310
F 0 "#PWR104" H 4720 3160 50  0001 C CNN
F 1 "V+" H 4720 3450 50  0000 C CNN
F 2 "" H 4720 3310 50  0000 C CNN
F 3 "" H 4720 3310 50  0000 C CNN
	1    4720 3310
	1    0    0    -1  
$EndComp
$Comp
L V- #PWR109
U 1 1 58D7EC90
P 4720 4210
F 0 "#PWR109" H 4720 4060 50  0001 C CNN
F 1 "V-" H 4720 4350 50  0000 C CNN
F 2 "" H 4720 4210 50  0000 C CNN
F 3 "" H 4720 4210 50  0000 C CNN
	1    4720 4210
	-1   0    0    1   
$EndComp
$Comp
L GNDA #PWR107
U 1 1 58D7EF65
P 6920 3810
F 0 "#PWR107" H 6920 3560 50  0001 C CNN
F 1 "GNDA" H 6920 3660 50  0000 C CNN
F 2 "" H 6920 3810 50  0001 C CNN
F 3 "" H 6920 3810 50  0001 C CNN
	1    6920 3810
	1    0    0    -1  
$EndComp
$Comp
L AD8622 U101
U 1 1 58D8019A
P 5770 3810
F 0 "U101" H 5970 3960 50  0000 L CNN
F 1 "AD8622" H 5970 3660 50  0000 L CNN
F 2 "Housings_SSOP:MSOP-8_3x3mm_Pitch0.65mm" H 5770 3810 50  0001 C CNN
F 3 "" H 5770 3810 50  0001 C CNN
	1    5770 3810
	1    0    0    -1  
$EndComp
$Comp
L V+ #PWR101
U 1 1 58D80748
P 6020 1580
F 0 "#PWR101" H 6020 1430 50  0001 C CNN
F 1 "V+" H 6020 1720 50  0000 C CNN
F 2 "" H 6020 1580 50  0000 C CNN
F 3 "" H 6020 1580 50  0000 C CNN
	1    6020 1580
	1    0    0    -1  
$EndComp
$Comp
L V- #PWR102
U 1 1 58D807E6
P 5620 2080
F 0 "#PWR102" H 5620 1930 50  0001 C CNN
F 1 "V-" H 5620 2220 50  0000 C CNN
F 2 "" H 5620 2080 50  0000 C CNN
F 3 "" H 5620 2080 50  0000 C CNN
	1    5620 2080
	-1   0    0    1   
$EndComp
$Comp
L AD8622 U101
U 2 1 58D81B44
P 8950 5670
F 0 "U101" H 9150 5820 50  0000 L CNN
F 1 "AD8622" H 9150 5520 50  0000 L CNN
F 2 "Housings_SSOP:MSOP-8_3x3mm_Pitch0.65mm" H 8950 5670 50  0001 C CNN
F 3 "" H 8950 5670 50  0001 C CNN
	2    8950 5670
	1    0    0    -1  
$EndComp
$Comp
L V+ #PWR111
U 1 1 58D81C02
P 8900 5420
F 0 "#PWR111" H 8900 5270 50  0001 C CNN
F 1 "V+" H 8900 5560 50  0000 C CNN
F 2 "" H 8900 5420 50  0000 C CNN
F 3 "" H 8900 5420 50  0000 C CNN
	1    8900 5420
	1    0    0    -1  
$EndComp
$Comp
L V- #PWR113
U 1 1 58D81C79
P 8900 5920
F 0 "#PWR113" H 8900 5770 50  0001 C CNN
F 1 "V-" H 8900 6060 50  0000 C CNN
F 2 "" H 8900 5920 50  0000 C CNN
F 3 "" H 8900 5920 50  0000 C CNN
	1    8900 5920
	-1   0    0    1   
$EndComp
$Comp
L GNDA #PWR112
U 1 1 58D81D91
P 8650 5570
F 0 "#PWR112" H 8650 5320 50  0001 C CNN
F 1 "GNDA" H 8650 5420 50  0000 C CNN
F 2 "" H 8650 5570 50  0001 C CNN
F 3 "" H 8650 5570 50  0001 C CNN
	1    8650 5570
	0    1    1    0   
$EndComp
Text Notes 8380 5270 0    60   ~ 0
Unused
$Comp
L PWR_FLAG #FLG102
U 1 1 58D93F01
P 5620 2080
F 0 "#FLG102" H 5620 2155 50  0001 C CNN
F 1 "PWR_FLAG" H 5420 2180 50  0001 C CNN
F 2 "" H 5620 2080 50  0001 C CNN
F 3 "" H 5620 2080 50  0001 C CNN
	1    5620 2080
	1    0    0    -1  
$EndComp
$Comp
L R_Pack02 RN101
U 1 1 58DA8D84
P 4990 3760
F 0 "RN101" V 4790 3760 50  0000 C CNN
F 1 "100k" V 5090 3760 50  0000 C CNN
F 2 "footprints:Sutumu_2012A" V 5165 3760 50  0001 C CNN
F 3 "" H 4990 3760 50  0001 C CNN
	1    4990 3760
	0    -1   1    0   
$EndComp
$Comp
L Polyfuse F101
U 1 1 58DA9C3F
P 5040 1680
F 0 "F101" V 4940 1680 50  0000 C CNN
F 1 "Poly 0.1A" V 5140 1680 50  0000 C CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" H 5090 1480 50  0001 L CNN
F 3 "" H 5040 1680 50  0001 C CNN
	1    5040 1680
	0    -1   -1   0   
$EndComp
$Comp
L D D101
U 1 1 58DA9D32
P 5210 1880
F 0 "D101" H 5240 1790 50  0000 C CNN
F 1 "1N4148" H 5210 2010 50  0000 C CNN
F 2 "Diodes_SMD:D_SOD-123" H 5210 1880 50  0001 C CNN
F 3 "" H 5210 1880 50  0001 C CNN
	1    5210 1880
	0    1    1    0   
$EndComp
Wire Wire Line
	5470 3910 5470 4110
Wire Wire Line
	5720 3310 5720 3560
Wire Wire Line
	6470 3310 6470 3410
Connection ~ 5720 3310
Wire Wire Line
	6470 3710 6470 3910
Connection ~ 6470 3810
Wire Wire Line
	6320 3810 6320 4110
Wire Wire Line
	6320 4110 5470 4110
Wire Wire Line
	4870 1780 4870 2080
Wire Wire Line
	9290 1480 9290 1930
Wire Wire Line
	9190 1930 9190 2080
Connection ~ 9290 1630
Connection ~ 9290 1780
Connection ~ 9290 1930
Connection ~ 4720 4210
Wire Wire Line
	5720 4210 5720 4060
Wire Wire Line
	8650 5770 8450 5770
Wire Wire Line
	8450 5770 8450 6220
Wire Wire Line
	8450 6220 9650 6220
Wire Wire Line
	9650 6220 9650 5670
Wire Wire Line
	9650 5670 9250 5670
Wire Wire Line
	6070 3810 6920 3810
Connection ~ 6720 3810
Wire Wire Line
	4870 2080 6490 2080
Connection ~ 5720 4210
Connection ~ 6320 3810
Wire Wire Line
	9290 1930 9190 1930
Connection ~ 4720 3310
Wire Wire Line
	4790 3660 4720 3660
Wire Wire Line
	4720 3660 4720 3310
Wire Wire Line
	4790 3760 4720 3760
Wire Wire Line
	4720 3760 4720 4210
Wire Wire Line
	5190 3660 5190 3760
Wire Wire Line
	5470 3710 5190 3710
Connection ~ 5190 3710
Wire Wire Line
	4870 1680 4890 1680
Wire Wire Line
	5190 1680 5620 1680
Wire Wire Line
	5210 2030 5210 2080
Connection ~ 5210 2080
Wire Wire Line
	5210 1730 5210 1680
Connection ~ 5210 1680
Wire Wire Line
	2200 2400 2970 2400
Wire Wire Line
	2970 2400 2970 3190
Wire Wire Line
	2200 2530 2870 2530
Wire Wire Line
	2870 2530 2870 3290
Wire Wire Line
	2870 3290 2970 3290
Wire Wire Line
	2180 3240 2720 3240
Wire Wire Line
	2720 3240 2720 3490
Wire Wire Line
	2720 3490 2970 3490
Wire Wire Line
	2180 3370 2650 3370
Wire Wire Line
	2650 3370 2650 3590
Wire Wire Line
	2650 3590 2970 3590
Wire Wire Line
	2200 4090 2360 4090
Wire Wire Line
	2360 4090 2360 3790
Wire Wire Line
	2360 3790 2970 3790
Wire Wire Line
	2200 4190 2440 4190
Wire Wire Line
	2440 4190 2440 3890
Wire Wire Line
	2440 3890 2970 3890
Wire Wire Line
	2210 4870 2570 4870
Wire Wire Line
	2570 4870 2570 4090
Wire Wire Line
	2570 4090 2970 4090
Wire Wire Line
	2210 5010 2680 5010
Wire Wire Line
	2680 5010 2680 4190
Wire Wire Line
	2680 4190 2970 4190
Text Notes 8530 6370 0    60   ~ 0
Supply Current: <250μA
Wire Wire Line
	4720 3310 6470 3310
Wire Wire Line
	4720 4210 6470 4210
$Comp
L SW_SP3T SW101
U 1 1 58DEFA27
P 5820 1680
F 0 "SW101" H 5710 1770 50  0000 C CNN
F 1 "SW_SP3T" H 5710 1560 50  0000 C CNN
F 2 "" H 5195 1855 50  0001 C CNN
F 3 "" H 5195 1855 50  0001 C CNN
	1    5820 1680
	1    0    0    -1  
$EndComp
NoConn ~ 6020 1780
$Comp
L LED D102
U 1 1 58DF01CB
P 6340 1680
F 0 "D102" H 6340 1780 50  0000 C CNN
F 1 "LED" H 6340 1580 50  0000 C CNN
F 2 "" H 6340 1680 50  0001 C CNN
F 3 "" H 6340 1680 50  0001 C CNN
	1    6340 1680
	-1   0    0    1   
$EndComp
$Comp
L R R101
U 1 1 58DF037A
P 6490 1880
F 0 "R101" V 6570 1880 50  0000 C CNN
F 1 "1.4k" V 6490 1880 50  0000 C CNN
F 2 "" V 6420 1880 50  0001 C CNN
F 3 "" H 6490 1880 50  0001 C CNN
	1    6490 1880
	1    0    0    -1  
$EndComp
Wire Wire Line
	6490 1730 6490 1680
Wire Wire Line
	6020 1680 6190 1680
Wire Wire Line
	6490 2080 6490 2030
Connection ~ 5620 2080
$EndSCHEMATC