EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 21 28
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 1 1 5FC0CEEC
P 3850 2150
AR Path="/5F80B3E6/5FC0CEEC" Ref="U?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CEEC" Ref="U?"  Part="1" 
F 0 "U?" H 3950 2300 60  0000 L CNN
F 1 "MCP6004-I_P" H 3950 2000 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4050 2350 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4050 2450 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4050 2550 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4050 2650 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4050 2750 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4050 2850 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4050 2950 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4050 3050 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4050 3150 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4050 3250 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4050 3350 60  0001 L CNN "Status"
	1    3850 2150
	1    0    0    -1  
$EndComp
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 2 1 5FC0CEFB
P 3850 3950
AR Path="/5F80B3E6/5FC0CEFB" Ref="U?"  Part="2" 
AR Path="/5F80B3E6/5FBF977F/5FC0CEFB" Ref="U?"  Part="2" 
F 0 "U?" H 3950 4050 60  0000 L CNN
F 1 "MCP6004-I_P" H 3950 3800 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4050 4150 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4050 4250 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4050 4350 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4050 4450 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4050 4550 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4050 4650 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4050 4750 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4050 4850 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4050 4950 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4050 5050 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4050 5150 60  0001 L CNN "Status"
	2    3850 3950
	1    0    0    -1  
$EndComp
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 3 1 5FC0CF0A
P 3850 5700
AR Path="/5F80B3E6/5FC0CF0A" Ref="U?"  Part="3" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF0A" Ref="U?"  Part="3" 
F 0 "U?" H 3950 5800 60  0000 L CNN
F 1 "MCP6004-I_P" H 3950 5600 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4050 5900 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4050 6000 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4050 6100 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4050 6200 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4050 6300 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4050 6400 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4050 6500 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4050 6600 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4050 6700 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4050 6800 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4050 6900 60  0001 L CNN "Status"
	3    3850 5700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0CF1F
P 3850 2400
AR Path="/5F80B3E6/5FC0CF1F" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF1F" Ref="#PWR0186"  Part="1" 
F 0 "#PWR0186" H 3850 2150 50  0001 C CNN
F 1 "GND" H 3855 2227 50  0000 C CNN
F 2 "" H 3850 2400 50  0001 C CNN
F 3 "" H 3850 2400 50  0001 C CNN
	1    3850 2400
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 2350 3850 2400
$Comp
L power:+3.3VA #PWR?
U 1 1 5FC0CF26
P 3850 1900
AR Path="/5F80B3E6/5FC0CF26" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF26" Ref="#PWR0187"  Part="1" 
F 0 "#PWR0187" H 3850 1750 50  0001 C CNN
F 1 "+3.3VA" H 3650 1950 50  0000 C CNN
F 2 "" H 3850 1900 50  0001 C CNN
F 3 "" H 3850 1900 50  0001 C CNN
	1    3850 1900
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 1900 3850 1950
$Comp
L Device:R R?
U 1 1 5FC0CF2D
P 2650 2250
AR Path="/5F80B3E6/5FC0CF2D" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF2D" Ref="R?"  Part="1" 
F 0 "R?" H 2720 2296 50  0000 L CNN
F 1 "82k" H 2720 2205 50  0000 L CNN
F 2 "" V 2580 2250 50  0001 C CNN
F 3 "~" H 2650 2250 50  0001 C CNN
	1    2650 2250
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CF33
P 2650 3050
AR Path="/5F80B3E6/5FC0CF33" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF33" Ref="R?"  Part="1" 
F 0 "R?" H 2720 3096 50  0000 L CNN
F 1 "82k" H 2720 3005 50  0000 L CNN
F 2 "" V 2580 3050 50  0001 C CNN
F 3 "~" H 2650 3050 50  0001 C CNN
	1    2650 3050
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 5FC0CF39
P 2650 2650
AR Path="/5F80B3E6/5FC0CF39" Ref="RV?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF39" Ref="RV?"  Part="1" 
F 0 "RV?" H 2581 2696 50  0000 R CNN
F 1 "100k" H 2581 2605 50  0000 R CNN
F 2 "" H 2650 2650 50  0001 C CNN
F 3 "~" H 2650 2650 50  0001 C CNN
	1    2650 2650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0CF3F
P 2650 3200
AR Path="/5F80B3E6/5FC0CF3F" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF3F" Ref="#PWR0188"  Part="1" 
F 0 "#PWR0188" H 2650 2950 50  0001 C CNN
F 1 "GND" H 2655 3027 50  0000 C CNN
F 2 "" H 2650 3200 50  0001 C CNN
F 3 "" H 2650 3200 50  0001 C CNN
	1    2650 3200
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CF45
P 2950 2450
AR Path="/5F80B3E6/5FC0CF45" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF45" Ref="R?"  Part="1" 
F 0 "R?" V 2743 2450 50  0000 C CNN
F 1 "47k" V 2834 2450 50  0000 C CNN
F 2 "" V 2880 2450 50  0001 C CNN
F 3 "~" H 2950 2450 50  0001 C CNN
	1    2950 2450
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CF4B
P 2950 2850
AR Path="/5F80B3E6/5FC0CF4B" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF4B" Ref="R?"  Part="1" 
F 0 "R?" V 3150 2850 50  0000 C CNN
F 1 "47k" V 3050 2850 50  0000 C CNN
F 2 "" V 2880 2850 50  0001 C CNN
F 3 "~" H 2950 2850 50  0001 C CNN
	1    2950 2850
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0CF57
P 2300 2450
AR Path="/5F80B3E6/5FC0CF57" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF57" Ref="#PWR0189"  Part="1" 
F 0 "#PWR0189" H 2300 2200 50  0001 C CNN
F 1 "GND" H 2305 2277 50  0000 C CNN
F 2 "" H 2300 2450 50  0001 C CNN
F 3 "" H 2300 2450 50  0001 C CNN
	1    2300 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 2400 2300 2450
Wire Wire Line
	2650 2100 2650 2050
Wire Wire Line
	2650 2050 2300 2050
Wire Wire Line
	2300 2050 2300 2100
$Comp
L Device:R R?
U 1 1 5FC0CF61
P 3050 2050
AR Path="/5F80B3E6/5FC0CF61" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF61" Ref="R?"  Part="1" 
F 0 "R?" V 3257 2050 50  0000 C CNN
F 1 "100k" V 3166 2050 50  0000 C CNN
F 2 "" V 2980 2050 50  0001 C CNN
F 3 "~" H 3050 2050 50  0001 C CNN
	1    3050 2050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2900 2050 2650 2050
Connection ~ 2650 2050
$Comp
L Device:R R?
U 1 1 5FC0CF69
P 3600 1750
AR Path="/5F80B3E6/5FC0CF69" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF69" Ref="R?"  Part="1" 
F 0 "R?" V 3807 1750 50  0000 C CNN
F 1 "50k" V 3716 1750 50  0000 C CNN
F 2 "" V 3530 1750 50  0001 C CNN
F 3 "~" H 3600 1750 50  0001 C CNN
	1    3600 1750
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CF6F
P 4100 1750
AR Path="/5F80B3E6/5FC0CF6F" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF6F" Ref="R?"  Part="1" 
F 0 "R?" V 4307 1750 50  0000 C CNN
F 1 "100k" V 4216 1750 50  0000 C CNN
F 2 "" V 4030 1750 50  0001 C CNN
F 3 "~" H 4100 1750 50  0001 C CNN
	1    4100 1750
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CF75
P 3850 1500
AR Path="/5F80B3E6/5FC0CF75" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF75" Ref="R?"  Part="1" 
F 0 "R?" H 3920 1546 50  0000 L CNN
F 1 "100k" H 3920 1455 50  0000 L CNN
F 2 "" V 3780 1500 50  0001 C CNN
F 3 "~" H 3850 1500 50  0001 C CNN
	1    3850 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 1750 3850 1750
Wire Wire Line
	3850 1650 3850 1750
Connection ~ 3850 1750
Wire Wire Line
	3850 1750 3950 1750
Text GLabel 3700 1300 0    50   Input ~ 0
AREF_-1.65V
Wire Wire Line
	3700 1300 3850 1300
Wire Wire Line
	3850 1300 3850 1350
Wire Wire Line
	3550 2050 3400 2050
Wire Wire Line
	3450 1750 3400 1750
Wire Wire Line
	3400 1750 3400 2050
Connection ~ 3400 2050
Wire Wire Line
	3400 2050 3200 2050
Wire Wire Line
	3550 2250 3400 2250
Wire Wire Line
	4150 2150 4350 2150
Wire Wire Line
	4350 1750 4250 1750
Wire Wire Line
	4350 2150 4350 1750
Wire Wire Line
	2650 2800 2650 2850
Wire Wire Line
	2800 2450 2650 2450
Wire Wire Line
	2650 2450 2650 2500
Wire Wire Line
	2650 2400 2650 2450
Connection ~ 2650 2450
Wire Wire Line
	2800 2850 2650 2850
Wire Wire Line
	2650 2900 2650 2850
Connection ~ 2650 2850
Wire Wire Line
	2800 2650 3200 2650
Wire Wire Line
	3400 2650 3400 2250
Wire Wire Line
	3100 2450 3200 2450
Wire Wire Line
	3200 2450 3200 2650
Connection ~ 3200 2650
Wire Wire Line
	3200 2650 3400 2650
Wire Wire Line
	3100 2850 3200 2850
Wire Wire Line
	3200 2850 3200 2650
$Comp
L power:GND #PWR?
U 1 1 5FC0CF9B
P 3850 4200
AR Path="/5F80B3E6/5FC0CF9B" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF9B" Ref="#PWR0190"  Part="1" 
F 0 "#PWR0190" H 3850 3950 50  0001 C CNN
F 1 "GND" H 3855 4027 50  0000 C CNN
F 2 "" H 3850 4200 50  0001 C CNN
F 3 "" H 3850 4200 50  0001 C CNN
	1    3850 4200
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 4150 3850 4200
$Comp
L power:+3.3VA #PWR?
U 1 1 5FC0CFA2
P 3850 3700
AR Path="/5F80B3E6/5FC0CFA2" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFA2" Ref="#PWR0191"  Part="1" 
F 0 "#PWR0191" H 3850 3550 50  0001 C CNN
F 1 "+3.3VA" H 3650 3750 50  0000 C CNN
F 2 "" H 3850 3700 50  0001 C CNN
F 3 "" H 3850 3700 50  0001 C CNN
	1    3850 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 3700 3850 3750
$Comp
L Device:R R?
U 1 1 5FC0CFA9
P 2650 4050
AR Path="/5F80B3E6/5FC0CFA9" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFA9" Ref="R?"  Part="1" 
F 0 "R?" H 2720 4096 50  0000 L CNN
F 1 "82k" H 2720 4005 50  0000 L CNN
F 2 "" V 2580 4050 50  0001 C CNN
F 3 "~" H 2650 4050 50  0001 C CNN
	1    2650 4050
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CFAF
P 2650 4850
AR Path="/5F80B3E6/5FC0CFAF" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFAF" Ref="R?"  Part="1" 
F 0 "R?" H 2720 4896 50  0000 L CNN
F 1 "82k" H 2720 4805 50  0000 L CNN
F 2 "" V 2580 4850 50  0001 C CNN
F 3 "~" H 2650 4850 50  0001 C CNN
	1    2650 4850
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 5FC0CFB5
P 2650 4450
AR Path="/5F80B3E6/5FC0CFB5" Ref="RV?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFB5" Ref="RV?"  Part="1" 
F 0 "RV?" H 2581 4496 50  0000 R CNN
F 1 "100k" H 2581 4405 50  0000 R CNN
F 2 "" H 2650 4450 50  0001 C CNN
F 3 "~" H 2650 4450 50  0001 C CNN
	1    2650 4450
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0CFBB
P 2650 5000
AR Path="/5F80B3E6/5FC0CFBB" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFBB" Ref="#PWR0192"  Part="1" 
F 0 "#PWR0192" H 2650 4750 50  0001 C CNN
F 1 "GND" H 2655 4827 50  0000 C CNN
F 2 "" H 2650 5000 50  0001 C CNN
F 3 "" H 2650 5000 50  0001 C CNN
	1    2650 5000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CFC1
P 2950 4250
AR Path="/5F80B3E6/5FC0CFC1" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFC1" Ref="R?"  Part="1" 
F 0 "R?" V 2743 4250 50  0000 C CNN
F 1 "47k" V 2834 4250 50  0000 C CNN
F 2 "" V 2880 4250 50  0001 C CNN
F 3 "~" H 2950 4250 50  0001 C CNN
	1    2950 4250
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CFC7
P 2950 4650
AR Path="/5F80B3E6/5FC0CFC7" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFC7" Ref="R?"  Part="1" 
F 0 "R?" V 3150 4650 50  0000 C CNN
F 1 "47k" V 3050 4650 50  0000 C CNN
F 2 "" V 2880 4650 50  0001 C CNN
F 3 "~" H 2950 4650 50  0001 C CNN
	1    2950 4650
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0CFD3
P 2300 4250
AR Path="/5F80B3E6/5FC0CFD3" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFD3" Ref="#PWR0193"  Part="1" 
F 0 "#PWR0193" H 2300 4000 50  0001 C CNN
F 1 "GND" H 2305 4077 50  0000 C CNN
F 2 "" H 2300 4250 50  0001 C CNN
F 3 "" H 2300 4250 50  0001 C CNN
	1    2300 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 4200 2300 4250
Wire Wire Line
	2650 3900 2650 3850
Wire Wire Line
	2300 3850 2300 3900
$Comp
L Device:R R?
U 1 1 5FC0CFDD
P 3050 3850
AR Path="/5F80B3E6/5FC0CFDD" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFDD" Ref="R?"  Part="1" 
F 0 "R?" V 3257 3850 50  0000 C CNN
F 1 "100k" V 3166 3850 50  0000 C CNN
F 2 "" V 2980 3850 50  0001 C CNN
F 3 "~" H 3050 3850 50  0001 C CNN
	1    3050 3850
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2900 3850 2650 3850
Connection ~ 2650 3850
$Comp
L Device:R R?
U 1 1 5FC0CFE5
P 3600 3550
AR Path="/5F80B3E6/5FC0CFE5" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFE5" Ref="R?"  Part="1" 
F 0 "R?" V 3807 3550 50  0000 C CNN
F 1 "50k" V 3716 3550 50  0000 C CNN
F 2 "" V 3530 3550 50  0001 C CNN
F 3 "~" H 3600 3550 50  0001 C CNN
	1    3600 3550
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CFEB
P 4100 3550
AR Path="/5F80B3E6/5FC0CFEB" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFEB" Ref="R?"  Part="1" 
F 0 "R?" V 4307 3550 50  0000 C CNN
F 1 "100k" V 4216 3550 50  0000 C CNN
F 2 "" V 4030 3550 50  0001 C CNN
F 3 "~" H 4100 3550 50  0001 C CNN
	1    4100 3550
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0CFF1
P 3850 3300
AR Path="/5F80B3E6/5FC0CFF1" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0CFF1" Ref="R?"  Part="1" 
F 0 "R?" H 3920 3346 50  0000 L CNN
F 1 "100k" H 3920 3255 50  0000 L CNN
F 2 "" V 3780 3300 50  0001 C CNN
F 3 "~" H 3850 3300 50  0001 C CNN
	1    3850 3300
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 3550 3850 3550
Wire Wire Line
	3850 3450 3850 3550
Connection ~ 3850 3550
Wire Wire Line
	3850 3550 3950 3550
Text GLabel 3700 3100 0    50   Input ~ 0
AREF_-1.65V
Wire Wire Line
	3700 3100 3850 3100
Wire Wire Line
	3850 3100 3850 3150
Wire Wire Line
	3550 3850 3400 3850
Wire Wire Line
	3450 3550 3400 3550
Wire Wire Line
	3400 3550 3400 3850
Connection ~ 3400 3850
Wire Wire Line
	3400 3850 3200 3850
Wire Wire Line
	3550 4050 3400 4050
Wire Wire Line
	4150 3950 4350 3950
Wire Wire Line
	4350 3550 4250 3550
Wire Wire Line
	4350 3950 4350 3550
Wire Wire Line
	2650 4600 2650 4650
Wire Wire Line
	2800 4250 2650 4250
Wire Wire Line
	2650 4250 2650 4300
Wire Wire Line
	2650 4200 2650 4250
Connection ~ 2650 4250
Wire Wire Line
	2800 4650 2650 4650
Wire Wire Line
	2650 4700 2650 4650
Connection ~ 2650 4650
Wire Wire Line
	2800 4450 3200 4450
Wire Wire Line
	3400 4450 3400 4050
Wire Wire Line
	3100 4250 3200 4250
Wire Wire Line
	3200 4250 3200 4450
Connection ~ 3200 4450
Wire Wire Line
	3200 4450 3400 4450
Wire Wire Line
	3100 4650 3200 4650
Wire Wire Line
	3200 4650 3200 4450
$Comp
L power:GND #PWR?
U 1 1 5FC0D017
P 3850 5950
AR Path="/5F80B3E6/5FC0D017" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D017" Ref="#PWR0194"  Part="1" 
F 0 "#PWR0194" H 3850 5700 50  0001 C CNN
F 1 "GND" H 3855 5777 50  0000 C CNN
F 2 "" H 3850 5950 50  0001 C CNN
F 3 "" H 3850 5950 50  0001 C CNN
	1    3850 5950
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 5900 3850 5950
$Comp
L power:+3.3VA #PWR?
U 1 1 5FC0D01E
P 3850 5450
AR Path="/5F80B3E6/5FC0D01E" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D01E" Ref="#PWR0195"  Part="1" 
F 0 "#PWR0195" H 3850 5300 50  0001 C CNN
F 1 "+3.3VA" H 3650 5500 50  0000 C CNN
F 2 "" H 3850 5450 50  0001 C CNN
F 3 "" H 3850 5450 50  0001 C CNN
	1    3850 5450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3850 5450 3850 5500
$Comp
L Device:R R?
U 1 1 5FC0D025
P 2650 5800
AR Path="/5F80B3E6/5FC0D025" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D025" Ref="R?"  Part="1" 
F 0 "R?" H 2720 5846 50  0000 L CNN
F 1 "82k" H 2720 5755 50  0000 L CNN
F 2 "" V 2580 5800 50  0001 C CNN
F 3 "~" H 2650 5800 50  0001 C CNN
	1    2650 5800
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D02B
P 2650 6600
AR Path="/5F80B3E6/5FC0D02B" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D02B" Ref="R?"  Part="1" 
F 0 "R?" H 2720 6646 50  0000 L CNN
F 1 "82k" H 2720 6555 50  0000 L CNN
F 2 "" V 2580 6600 50  0001 C CNN
F 3 "~" H 2650 6600 50  0001 C CNN
	1    2650 6600
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 5FC0D031
P 2650 6200
AR Path="/5F80B3E6/5FC0D031" Ref="RV?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D031" Ref="RV?"  Part="1" 
F 0 "RV?" H 2581 6246 50  0000 R CNN
F 1 "100k" H 2581 6155 50  0000 R CNN
F 2 "" H 2650 6200 50  0001 C CNN
F 3 "~" H 2650 6200 50  0001 C CNN
	1    2650 6200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0D037
P 2650 6750
AR Path="/5F80B3E6/5FC0D037" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D037" Ref="#PWR0196"  Part="1" 
F 0 "#PWR0196" H 2650 6500 50  0001 C CNN
F 1 "GND" H 2655 6577 50  0000 C CNN
F 2 "" H 2650 6750 50  0001 C CNN
F 3 "" H 2650 6750 50  0001 C CNN
	1    2650 6750
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D03D
P 2950 6000
AR Path="/5F80B3E6/5FC0D03D" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D03D" Ref="R?"  Part="1" 
F 0 "R?" V 2743 6000 50  0000 C CNN
F 1 "47k" V 2834 6000 50  0000 C CNN
F 2 "" V 2880 6000 50  0001 C CNN
F 3 "~" H 2950 6000 50  0001 C CNN
	1    2950 6000
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D043
P 2950 6400
AR Path="/5F80B3E6/5FC0D043" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D043" Ref="R?"  Part="1" 
F 0 "R?" V 3150 6400 50  0000 C CNN
F 1 "47k" V 3050 6400 50  0000 C CNN
F 2 "" V 2880 6400 50  0001 C CNN
F 3 "~" H 2950 6400 50  0001 C CNN
	1    2950 6400
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0D04F
P 2300 6000
AR Path="/5F80B3E6/5FC0D04F" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D04F" Ref="#PWR0197"  Part="1" 
F 0 "#PWR0197" H 2300 5750 50  0001 C CNN
F 1 "GND" H 2305 5827 50  0000 C CNN
F 2 "" H 2300 6000 50  0001 C CNN
F 3 "" H 2300 6000 50  0001 C CNN
	1    2300 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 5950 2300 6000
Wire Wire Line
	2650 5650 2650 5600
Wire Wire Line
	2650 5600 2300 5600
Wire Wire Line
	2300 5600 2300 5650
$Comp
L Device:R R?
U 1 1 5FC0D059
P 3050 5600
AR Path="/5F80B3E6/5FC0D059" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D059" Ref="R?"  Part="1" 
F 0 "R?" V 3257 5600 50  0000 C CNN
F 1 "100k" V 3166 5600 50  0000 C CNN
F 2 "" V 2980 5600 50  0001 C CNN
F 3 "~" H 3050 5600 50  0001 C CNN
	1    3050 5600
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2900 5600 2650 5600
Connection ~ 2650 5600
$Comp
L Device:R R?
U 1 1 5FC0D061
P 3600 5300
AR Path="/5F80B3E6/5FC0D061" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D061" Ref="R?"  Part="1" 
F 0 "R?" V 3807 5300 50  0000 C CNN
F 1 "50k" V 3716 5300 50  0000 C CNN
F 2 "" V 3530 5300 50  0001 C CNN
F 3 "~" H 3600 5300 50  0001 C CNN
	1    3600 5300
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D067
P 4100 5300
AR Path="/5F80B3E6/5FC0D067" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D067" Ref="R?"  Part="1" 
F 0 "R?" V 4307 5300 50  0000 C CNN
F 1 "100k" V 4216 5300 50  0000 C CNN
F 2 "" V 4030 5300 50  0001 C CNN
F 3 "~" H 4100 5300 50  0001 C CNN
	1    4100 5300
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D06D
P 3850 5050
AR Path="/5F80B3E6/5FC0D06D" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D06D" Ref="R?"  Part="1" 
F 0 "R?" H 3920 5096 50  0000 L CNN
F 1 "100k" H 3920 5005 50  0000 L CNN
F 2 "" V 3780 5050 50  0001 C CNN
F 3 "~" H 3850 5050 50  0001 C CNN
	1    3850 5050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 5300 3850 5300
Wire Wire Line
	3850 5200 3850 5300
Connection ~ 3850 5300
Wire Wire Line
	3850 5300 3950 5300
Text GLabel 3700 4850 0    50   Input ~ 0
AREF_-1.65V
Wire Wire Line
	3700 4850 3850 4850
Wire Wire Line
	3850 4850 3850 4900
Wire Wire Line
	3550 5600 3400 5600
Wire Wire Line
	3450 5300 3400 5300
Wire Wire Line
	3400 5300 3400 5600
Connection ~ 3400 5600
Wire Wire Line
	3400 5600 3200 5600
Wire Wire Line
	3550 5800 3400 5800
Wire Wire Line
	4150 5700 4350 5700
Wire Wire Line
	4350 5300 4250 5300
Wire Wire Line
	4350 5700 4350 5300
Wire Wire Line
	2650 6350 2650 6400
Wire Wire Line
	2800 6000 2650 6000
Wire Wire Line
	2650 6000 2650 6050
Wire Wire Line
	2650 5950 2650 6000
Connection ~ 2650 6000
Wire Wire Line
	2800 6400 2650 6400
Wire Wire Line
	2650 6450 2650 6400
Connection ~ 2650 6400
Wire Wire Line
	2800 6200 3200 6200
Wire Wire Line
	3400 6200 3400 5800
Wire Wire Line
	3100 6000 3200 6000
Wire Wire Line
	3200 6000 3200 6200
Connection ~ 3200 6200
Wire Wire Line
	3200 6200 3400 6200
Wire Wire Line
	3100 6400 3200 6400
Wire Wire Line
	3200 6400 3200 6200
Wire Wire Line
	9450 3650 9450 3250
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 5FC773B4
P 1700 2050
F 0 "J?" H 1705 2392 50  0000 C CNN
F 1 "VOICE1_CV" H 1705 2301 50  0000 C CNN
F 2 "" H 1700 2050 50  0001 C CNN
F 3 "" H 1700 2050 50  0001 C CNN
	1    1700 2050
	1    0    0    -1  
$EndComp
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 5FC78060
P 1650 3850
F 0 "J?" H 1655 4192 50  0000 C CNN
F 1 "VOICE2_CV" H 1655 4101 50  0000 C CNN
F 2 "" H 1650 3850 50  0001 C CNN
F 3 "" H 1650 3850 50  0001 C CNN
	1    1650 3850
	1    0    0    -1  
$EndComp
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 5FC78A18
P 1650 5600
F 0 "J?" H 1655 5942 50  0000 C CNN
F 1 "VOICE3_CV" H 1655 5851 50  0000 C CNN
F 2 "" H 1650 5600 50  0001 C CNN
F 3 "" H 1650 5600 50  0001 C CNN
	1    1650 5600
	1    0    0    -1  
$EndComp
$Comp
L Device:D_TVS D?
U 1 1 5FC93E25
P 2300 2250
F 0 "D?" V 2254 2330 50  0000 L CNN
F 1 "B72500D0160H060" V 2345 2330 50  0000 L CNN
F 2 "" H 2300 2250 50  0001 C CNN
F 3 "~" H 2300 2250 50  0001 C CNN
	1    2300 2250
	0    1    1    0   
$EndComp
$Comp
L Device:D_TVS D?
U 1 1 5FC944E7
P 2300 5800
F 0 "D?" V 2254 5880 50  0000 L CNN
F 1 "B72500D0160H060" V 2345 5880 50  0000 L CNN
F 2 "" H 2300 5800 50  0001 C CNN
F 3 "~" H 2300 5800 50  0001 C CNN
	1    2300 5800
	0    1    1    0   
$EndComp
$Comp
L Device:D_TVS D?
U 1 1 5FC94AA6
P 2300 4050
F 0 "D?" V 2254 4130 50  0000 L CNN
F 1 "B72500D0160H060" V 2345 4130 50  0000 L CNN
F 2 "" H 2300 4050 50  0001 C CNN
F 3 "~" H 2300 4050 50  0001 C CNN
	1    2300 4050
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC95165
P 2000 2250
AR Path="/5F80B3E6/5FC95165" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC95165" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2000 2000 50  0001 C CNN
F 1 "GND" H 2005 2077 50  0000 C CNN
F 2 "" H 2000 2250 50  0001 C CNN
F 3 "" H 2000 2250 50  0001 C CNN
	1    2000 2250
	1    0    0    -1  
$EndComp
Wire Wire Line
	1900 2150 2000 2150
Wire Wire Line
	2000 2150 2000 2250
Wire Wire Line
	1900 2050 2100 2050
Connection ~ 2300 2050
$Comp
L power:GND #PWR?
U 1 1 5FCABA24
P 2000 1800
AR Path="/5F80B3E6/5FCABA24" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FCABA24" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2000 1550 50  0001 C CNN
F 1 "GND" H 2005 1627 50  0000 C CNN
F 2 "" H 2000 1800 50  0001 C CNN
F 3 "" H 2000 1800 50  0001 C CNN
	1    2000 1800
	-1   0    0    1   
$EndComp
Wire Wire Line
	2000 1950 1900 1950
Wire Wire Line
	2000 1800 2000 1950
Wire Wire Line
	1850 3950 2100 3950
Wire Wire Line
	2100 3950 2100 2050
Connection ~ 2100 2050
Wire Wire Line
	2100 2050 2300 2050
Wire Wire Line
	1850 3850 1950 3850
Connection ~ 2300 3850
Wire Wire Line
	2300 3850 2650 3850
$Comp
L power:GND #PWR?
U 1 1 5FCF3F17
P 1950 3650
AR Path="/5F80B3E6/5FCF3F17" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FCF3F17" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 1950 3400 50  0001 C CNN
F 1 "GND" H 1955 3477 50  0000 C CNN
F 2 "" H 1950 3650 50  0001 C CNN
F 3 "" H 1950 3650 50  0001 C CNN
	1    1950 3650
	-1   0    0    1   
$EndComp
Wire Wire Line
	1950 3650 1950 3750
Wire Wire Line
	1950 3750 1850 3750
Wire Wire Line
	1850 5600 2300 5600
Connection ~ 2300 5600
Wire Wire Line
	1850 5700 1950 5700
Wire Wire Line
	1950 5700 1950 3850
Connection ~ 1950 3850
Wire Wire Line
	1950 3850 2300 3850
Text GLabel 4600 5700 2    50   Input ~ 0
VOICE3_CV_ADC
Wire Wire Line
	4600 5700 4350 5700
Connection ~ 4350 5700
Text GLabel 4600 3950 2    50   Input ~ 0
VOICE2_CV_ADC
Wire Wire Line
	4600 3950 4350 3950
Connection ~ 4350 3950
Text GLabel 4650 2150 2    50   Input ~ 0
VOICE1_CV_ADC
Wire Wire Line
	4650 2150 4350 2150
Connection ~ 4350 2150
$Comp
L power:GND #PWR?
U 1 1 5FD450AD
P 5550 1150
AR Path="/5F80B3E6/5FD450AD" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FD450AD" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 5550 900 50  0001 C CNN
F 1 "GND" H 5555 977 50  0000 C CNN
F 2 "" H 5550 1150 50  0001 C CNN
F 3 "" H 5550 1150 50  0001 C CNN
	1    5550 1150
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3VA #PWR?
U 1 1 5FD4558A
P 5550 850
AR Path="/5F80B3E6/5FD4558A" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FD4558A" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 5550 700 50  0001 C CNN
F 1 "+3.3VA" H 5350 900 50  0000 C CNN
F 2 "" H 5550 850 50  0001 C CNN
F 3 "" H 5550 850 50  0001 C CNN
	1    5550 850 
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5FD460D4
P 5550 1000
F 0 "C?" H 5665 1046 50  0000 L CNN
F 1 "100n" H 5665 955 50  0000 L CNN
F 2 "" H 5588 850 50  0001 C CNN
F 3 "~" H 5550 1000 50  0001 C CNN
	1    5550 1000
	1    0    0    -1  
$EndComp
Text Notes 6050 850  0    197  ~ 0
-5 to 5 Volts
$Comp
L Device:D_TVS D?
U 1 1 5FC8B5B8
P 7400 3750
F 0 "D?" V 7354 3830 50  0000 L CNN
F 1 "B72500D0160H060" V 7445 3830 50  0000 L CNN
F 2 "" H 7400 3750 50  0001 C CNN
F 3 "~" H 7400 3750 50  0001 C CNN
	1    7400 3750
	0    1    1    0   
$EndComp
Wire Wire Line
	8300 4350 8300 4150
Wire Wire Line
	8200 4350 8300 4350
Wire Wire Line
	8300 4150 8500 4150
Connection ~ 8300 4150
Wire Wire Line
	8300 3950 8300 4150
Wire Wire Line
	8200 3950 8300 3950
Wire Wire Line
	8500 4150 8500 3750
Wire Wire Line
	7900 4150 8300 4150
Connection ~ 7750 4350
Wire Wire Line
	7750 4400 7750 4350
Wire Wire Line
	7900 4350 7750 4350
Connection ~ 7750 3950
Wire Wire Line
	7750 3900 7750 3950
Wire Wire Line
	7750 3950 7750 4000
Wire Wire Line
	7900 3950 7750 3950
Wire Wire Line
	7750 4300 7750 4350
Wire Wire Line
	9450 3250 9350 3250
Wire Wire Line
	9250 3650 9450 3650
Wire Wire Line
	8650 3750 8500 3750
Wire Wire Line
	8500 3550 8300 3550
Connection ~ 8500 3550
Wire Wire Line
	8500 3250 8500 3550
Wire Wire Line
	8550 3250 8500 3250
Wire Wire Line
	8650 3550 8500 3550
Wire Wire Line
	8950 2800 8950 2850
Wire Wire Line
	8800 2800 8950 2800
Text GLabel 8800 2800 0    50   Input ~ 0
AREF_-1.65V
Wire Wire Line
	8950 3250 9050 3250
Connection ~ 8950 3250
Wire Wire Line
	8950 3150 8950 3250
Wire Wire Line
	8850 3250 8950 3250
$Comp
L Device:R R?
U 1 1 5FC0D0E9
P 8950 3000
AR Path="/5F80B3E6/5FC0D0E9" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0E9" Ref="R?"  Part="1" 
F 0 "R?" H 9020 3046 50  0000 L CNN
F 1 "100k" H 9020 2955 50  0000 L CNN
F 2 "" V 8880 3000 50  0001 C CNN
F 3 "~" H 8950 3000 50  0001 C CNN
	1    8950 3000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D0E3
P 9200 3250
AR Path="/5F80B3E6/5FC0D0E3" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0E3" Ref="R?"  Part="1" 
F 0 "R?" V 9407 3250 50  0000 C CNN
F 1 "100k" V 9316 3250 50  0000 C CNN
F 2 "" V 9130 3250 50  0001 C CNN
F 3 "~" H 9200 3250 50  0001 C CNN
	1    9200 3250
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D0DD
P 8700 3250
AR Path="/5F80B3E6/5FC0D0DD" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0DD" Ref="R?"  Part="1" 
F 0 "R?" V 8907 3250 50  0000 C CNN
F 1 "50k" V 8816 3250 50  0000 C CNN
F 2 "" V 8630 3250 50  0001 C CNN
F 3 "~" H 8700 3250 50  0001 C CNN
	1    8700 3250
	0    -1   -1   0   
$EndComp
Connection ~ 7750 3550
Wire Wire Line
	8000 3550 7750 3550
$Comp
L Device:R R?
U 1 1 5FC0D0D5
P 8150 3550
AR Path="/5F80B3E6/5FC0D0D5" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0D5" Ref="R?"  Part="1" 
F 0 "R?" V 8357 3550 50  0000 C CNN
F 1 "100k" V 8266 3550 50  0000 C CNN
F 2 "" V 8080 3550 50  0001 C CNN
F 3 "~" H 8150 3550 50  0001 C CNN
	1    8150 3550
	0    -1   -1   0   
$EndComp
Wire Wire Line
	7400 3550 7400 3600
Wire Wire Line
	7750 3550 7400 3550
Wire Wire Line
	7750 3600 7750 3550
Wire Wire Line
	7400 3900 7400 3950
$Comp
L power:GND #PWR?
U 1 1 5FC0D0CB
P 7400 3950
AR Path="/5F80B3E6/5FC0D0CB" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0CB" Ref="#PWR0201"  Part="1" 
F 0 "#PWR0201" H 7400 3700 50  0001 C CNN
F 1 "GND" H 7405 3777 50  0000 C CNN
F 2 "" H 7400 3950 50  0001 C CNN
F 3 "" H 7400 3950 50  0001 C CNN
	1    7400 3950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D0BF
P 8050 4350
AR Path="/5F80B3E6/5FC0D0BF" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0BF" Ref="R?"  Part="1" 
F 0 "R?" V 8250 4350 50  0000 C CNN
F 1 "47k" V 8150 4350 50  0000 C CNN
F 2 "" V 7980 4350 50  0001 C CNN
F 3 "~" H 8050 4350 50  0001 C CNN
	1    8050 4350
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D0B9
P 8050 3950
AR Path="/5F80B3E6/5FC0D0B9" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0B9" Ref="R?"  Part="1" 
F 0 "R?" V 7843 3950 50  0000 C CNN
F 1 "47k" V 7934 3950 50  0000 C CNN
F 2 "" V 7980 3950 50  0001 C CNN
F 3 "~" H 8050 3950 50  0001 C CNN
	1    8050 3950
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FC0D0B3
P 7750 4700
AR Path="/5F80B3E6/5FC0D0B3" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0B3" Ref="#PWR0200"  Part="1" 
F 0 "#PWR0200" H 7750 4450 50  0001 C CNN
F 1 "GND" H 7755 4527 50  0000 C CNN
F 2 "" H 7750 4700 50  0001 C CNN
F 3 "" H 7750 4700 50  0001 C CNN
	1    7750 4700
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 5FC0D0AD
P 7750 4150
AR Path="/5F80B3E6/5FC0D0AD" Ref="RV?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0AD" Ref="RV?"  Part="1" 
F 0 "RV?" H 7681 4196 50  0000 R CNN
F 1 "100k" H 7681 4105 50  0000 R CNN
F 2 "" H 7750 4150 50  0001 C CNN
F 3 "~" H 7750 4150 50  0001 C CNN
	1    7750 4150
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D0A7
P 7750 4550
AR Path="/5F80B3E6/5FC0D0A7" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0A7" Ref="R?"  Part="1" 
F 0 "R?" H 7820 4596 50  0000 L CNN
F 1 "82k" H 7820 4505 50  0000 L CNN
F 2 "" V 7680 4550 50  0001 C CNN
F 3 "~" H 7750 4550 50  0001 C CNN
	1    7750 4550
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FC0D0A1
P 7750 3750
AR Path="/5F80B3E6/5FC0D0A1" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D0A1" Ref="R?"  Part="1" 
F 0 "R?" H 7820 3796 50  0000 L CNN
F 1 "82k" H 7820 3705 50  0000 L CNN
F 2 "" V 7680 3750 50  0001 C CNN
F 3 "~" H 7750 3750 50  0001 C CNN
	1    7750 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	8950 3400 8950 3450
$Comp
L power:+3.3VA #PWR?
U 1 1 5FC0D09A
P 8950 3400
AR Path="/5F80B3E6/5FC0D09A" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D09A" Ref="#PWR0199"  Part="1" 
F 0 "#PWR0199" H 8950 3250 50  0001 C CNN
F 1 "+3.3VA" H 8750 3450 50  0000 C CNN
F 2 "" H 8950 3400 50  0001 C CNN
F 3 "" H 8950 3400 50  0001 C CNN
	1    8950 3400
	1    0    0    -1  
$EndComp
Wire Wire Line
	8950 3850 8950 3900
$Comp
L power:GND #PWR?
U 1 1 5FC0D093
P 8950 3900
AR Path="/5F80B3E6/5FC0D093" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/5FC0D093" Ref="#PWR0198"  Part="1" 
F 0 "#PWR0198" H 8950 3650 50  0001 C CNN
F 1 "GND" H 8955 3727 50  0000 C CNN
F 2 "" H 8950 3900 50  0001 C CNN
F 3 "" H 8950 3900 50  0001 C CNN
	1    8950 3900
	1    0    0    -1  
$EndComp
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 4 1 5FC0CF19
P 8950 3650
AR Path="/5F80B3E6/5FC0CF19" Ref="U?"  Part="4" 
AR Path="/5F80B3E6/5FBF977F/5FC0CF19" Ref="U?"  Part="4" 
F 0 "U?" H 9050 3750 60  0000 L CNN
F 1 "MCP6004-I_P" H 9050 3550 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 9150 3850 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 9150 3950 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 9150 4050 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 9150 4150 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 9150 4250 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 9150 4350 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 9150 4450 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 9150 4550 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 9150 4650 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 9150 4750 60  0001 L CNN "Manufacturer"
F 12 "Active" H 9150 4850 60  0001 L CNN "Status"
	4    8950 3650
	1    0    0    -1  
$EndComp
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 600DDB85
P 6900 3550
F 0 "J?" H 6905 3892 50  0000 C CNN
F 1 "FILTER_CUTOFF_CV" H 6905 3801 50  0000 C CNN
F 2 "" H 6900 3550 50  0001 C CNN
F 3 "" H 6900 3550 50  0001 C CNN
	1    6900 3550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 600DE4AC
P 7200 3700
AR Path="/5F80B3E6/600DE4AC" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/600DE4AC" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 7200 3450 50  0001 C CNN
F 1 "GND" H 7205 3527 50  0000 C CNN
F 2 "" H 7200 3700 50  0001 C CNN
F 3 "" H 7200 3700 50  0001 C CNN
	1    7200 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	7100 3650 7200 3650
Wire Wire Line
	7200 3650 7200 3700
Wire Wire Line
	7100 3450 7200 3450
Wire Wire Line
	7200 3450 7200 3650
Connection ~ 7200 3650
Wire Wire Line
	7100 3550 7400 3550
Connection ~ 7400 3550
$Comp
L Connector:TestPoint TP?
U 1 1 60135534
P 4350 1750
F 0 "TP?" V 4304 1938 50  0000 L CNN
F 1 "TestPoint" V 4395 1938 50  0000 L CNN
F 2 "" H 4550 1750 50  0001 C CNN
F 3 "~" H 4550 1750 50  0001 C CNN
	1    4350 1750
	0    1    1    0   
$EndComp
Connection ~ 4350 1750
$Comp
L Connector:TestPoint TP?
U 1 1 60135BFC
P 4350 3550
F 0 "TP?" V 4304 3738 50  0000 L CNN
F 1 "TestPoint" V 4395 3738 50  0000 L CNN
F 2 "" H 4550 3550 50  0001 C CNN
F 3 "~" H 4550 3550 50  0001 C CNN
	1    4350 3550
	0    1    1    0   
$EndComp
Connection ~ 4350 3550
$Comp
L Connector:TestPoint TP?
U 1 1 60136217
P 4350 5300
F 0 "TP?" V 4304 5488 50  0000 L CNN
F 1 "TestPoint" V 4395 5488 50  0000 L CNN
F 2 "" H 4550 5300 50  0001 C CNN
F 3 "~" H 4550 5300 50  0001 C CNN
	1    4350 5300
	0    1    1    0   
$EndComp
Connection ~ 4350 5300
$Comp
L Connector:TestPoint TP?
U 1 1 6013689A
P 9450 3250
F 0 "TP?" V 9404 3438 50  0000 L CNN
F 1 "TestPoint" V 9495 3438 50  0000 L CNN
F 2 "" H 9650 3250 50  0001 C CNN
F 3 "~" H 9650 3250 50  0001 C CNN
	1    9450 3250
	0    1    1    0   
$EndComp
Connection ~ 9450 3250
Text GLabel 9650 3650 2    50   Input ~ 0
FILTER_CUTOFF_CV_ADC
Wire Wire Line
	9650 3650 9450 3650
Connection ~ 9450 3650
$EndSCHEMATC