EESchema Schematic File Version 4
LIBS:mixerin_output-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L power:+15V #PWR0110
U 1 1 5C54757E
P 3700 1700
F 0 "#PWR0110" H 3700 1550 50  0001 C CNN
F 1 "+15V" H 3715 1873 50  0000 C CNN
F 2 "" H 3700 1700 50  0001 C CNN
F 3 "" H 3700 1700 50  0001 C CNN
	1    3700 1700
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0111
U 1 1 5C5477E1
P 1950 1000
F 0 "#PWR0111" H 1950 1100 50  0001 C CNN
F 1 "-15V" H 1965 1173 50  0000 C CNN
F 2 "" H 1950 1000 50  0001 C CNN
F 3 "" H 1950 1000 50  0001 C CNN
	1    1950 1000
	-1   0    0    1   
$EndComp
$Comp
L power:GNDA #PWR0112
U 1 1 5C547AD0
P 2200 1300
F 0 "#PWR0112" H 2200 1050 50  0001 C CNN
F 1 "GNDA" H 2205 1127 50  0000 C CNN
F 2 "" H 2200 1300 50  0001 C CNN
F 3 "" H 2200 1300 50  0001 C CNN
	1    2200 1300
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_02x18_Row_Letter_Last J3
U 1 1 5C5482AB
P 2750 1800
F 0 "J3" H 2800 2817 50  0000 C CNN
F 1 "Conn_02x18_Row_Letter_First" H 2800 2726 50  0000 C CNN
F 2 "footprints:PCIexpress_1x_letters" H 2750 1800 50  0001 C CNN
F 3 "~" H 2750 1800 50  0001 C CNN
	1    2750 1800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1950 1000 2450 1000
Wire Wire Line
	2550 1100 2450 1100
Wire Wire Line
	2450 1100 2450 1000
Connection ~ 2450 1000
Wire Wire Line
	2450 1000 2550 1000
Wire Wire Line
	2550 1200 2450 1200
Wire Wire Line
	2450 1200 2450 1100
Connection ~ 2450 1100
$Comp
L power:+15V #PWR0101
U 1 1 5C548E75
P 1950 1700
F 0 "#PWR0101" H 1950 1550 50  0001 C CNN
F 1 "+15V" H 1965 1873 50  0000 C CNN
F 2 "" H 1950 1700 50  0001 C CNN
F 3 "" H 1950 1700 50  0001 C CNN
	1    1950 1700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3050 1100 3150 1100
Wire Wire Line
	3150 1100 3150 1000
Wire Wire Line
	3150 1000 3050 1000
Wire Wire Line
	3150 1100 3150 1200
Wire Wire Line
	3150 1200 3050 1200
Connection ~ 3150 1100
$Comp
L power:GNDA #PWR0109
U 1 1 5C54A2E8
P 3400 1300
F 0 "#PWR0109" H 3400 1050 50  0001 C CNN
F 1 "GNDA" H 3405 1127 50  0000 C CNN
F 2 "" H 3400 1300 50  0001 C CNN
F 3 "" H 3400 1300 50  0001 C CNN
	1    3400 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	2200 1300 2450 1300
$Comp
L power:-15V #PWR0113
U 1 1 5C54D177
P 3700 1000
F 0 "#PWR0113" H 3700 1100 50  0001 C CNN
F 1 "-15V" H 3715 1173 50  0000 C CNN
F 2 "" H 3700 1000 50  0001 C CNN
F 3 "" H 3700 1000 50  0001 C CNN
	1    3700 1000
	-1   0    0    1   
$EndComp
Wire Wire Line
	3150 1000 3700 1000
Connection ~ 3150 1000
Wire Wire Line
	3050 1300 3150 1300
Wire Wire Line
	2550 1400 2450 1400
Wire Wire Line
	2450 1400 2450 1300
Connection ~ 2450 1300
Wire Wire Line
	2450 1300 2550 1300
Wire Wire Line
	2550 1500 2450 1500
Wire Wire Line
	2450 1500 2450 1400
Connection ~ 2450 1400
Wire Wire Line
	3050 1400 3150 1400
Wire Wire Line
	3150 1400 3150 1300
Connection ~ 3150 1300
Wire Wire Line
	3150 1300 3400 1300
Wire Wire Line
	3150 1400 3150 1500
Wire Wire Line
	3150 1500 3050 1500
Connection ~ 3150 1400
Wire Wire Line
	2550 1600 2450 1600
Wire Wire Line
	2450 1600 2450 1700
Wire Wire Line
	2450 1800 2550 1800
Wire Wire Line
	2550 1700 2450 1700
Connection ~ 2450 1700
Wire Wire Line
	2450 1700 2450 1800
Wire Wire Line
	3050 1600 3150 1600
Wire Wire Line
	3150 1600 3150 1700
Wire Wire Line
	3150 1800 3050 1800
Wire Wire Line
	3050 1700 3150 1700
Connection ~ 3150 1700
Wire Wire Line
	3150 1700 3150 1800
Wire Wire Line
	3700 1700 3150 1700
Wire Wire Line
	1950 1700 2450 1700
$Comp
L Device:Opamp_Dual_Generic U1
U 2 1 5C54CA7D
P 4150 5500
AR Path="/5C54CA7D" Ref="U1"  Part="2" 
AR Path="/5C06F581/5C54CA7D" Ref="U?"  Part="2" 
AR Path="/5C0574B7/5C54CA7D" Ref="U?"  Part="1" 
AR Path="/5C05A497/5C54CA7D" Ref="U?"  Part="2" 
F 0 "U1" H 4150 5200 50  0000 C CNN
F 1 "LM4562" H 4200 5300 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 4150 5500 50  0001 C CNN
F 3 "~" H 4150 5500 50  0001 C CNN
	2    4150 5500
	1    0    0    1   
$EndComp
$Comp
L Device:Opamp_Dual_Generic U1
U 1 1 5C54CA84
P 4150 3650
AR Path="/5C54CA84" Ref="U1"  Part="1" 
AR Path="/5C06F581/5C54CA84" Ref="U?"  Part="3" 
AR Path="/5C0574B7/5C54CA84" Ref="U?"  Part="2" 
AR Path="/5C05A497/5C54CA84" Ref="U?"  Part="1" 
F 0 "U1" H 4200 3350 50  0000 C CNN
F 1 "LM4562" H 4250 3450 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 4150 3650 50  0001 C CNN
F 3 "~" H 4150 3650 50  0001 C CNN
	1    4150 3650
	1    0    0    1   
$EndComp
$Comp
L Device:R RA2
U 1 1 5C54CA8C
P 3550 3550
AR Path="/5C54CA8C" Ref="RA2"  Part="1" 
AR Path="/5C06F581/5C54CA8C" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CA8C" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CA8C" Ref="R?"  Part="1" 
F 0 "RA2" V 3650 3550 50  0000 C CNN
F 1 "10k" V 3550 3550 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3480 3550 50  0001 C CNN
F 3 "~" H 3550 3550 50  0001 C CNN
F 4 "Metallfilm" V 3550 3550 50  0001 C CNN "Notes"
	1    3550 3550
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3850 3550 3800 3550
$Comp
L Device:R RA1
U 1 1 5C54CA95
P 4150 3200
AR Path="/5C54CA95" Ref="RA1"  Part="1" 
AR Path="/5C06F581/5C54CA95" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CA95" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CA95" Ref="R?"  Part="1" 
F 0 "RA1" V 4357 3200 50  0000 C CNN
F 1 "10k" V 4266 3200 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4080 3200 50  0001 C CNN
F 3 "~" H 4150 3200 50  0001 C CNN
F 4 "Metallfilm" V 4150 3200 50  0001 C CNN "Notes"
	1    4150 3200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4450 3650 4450 3200
Wire Wire Line
	4450 3200 4300 3200
Wire Wire Line
	4000 3200 3800 3200
Wire Wire Line
	3800 3200 3800 3550
Wire Wire Line
	3800 3550 3700 3550
Connection ~ 3800 3550
Text Notes 4300 3200 0    50   ~ 0
v = -R2/R1
$Comp
L Device:R RA3
U 1 1 5C54CAA4
P 3350 3750
AR Path="/5C54CAA4" Ref="RA3"  Part="1" 
AR Path="/5C06F581/5C54CAA4" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAA4" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAA4" Ref="R?"  Part="1" 
F 0 "RA3" V 3450 3750 50  0000 C CNN
F 1 "10k" V 3350 3750 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3280 3750 50  0001 C CNN
F 3 "~" H 3350 3750 50  0001 C CNN
F 4 "Metallfilm" V 3350 3750 50  0001 C CNN "Notes"
	1    3350 3750
	0    -1   -1   0   
$EndComp
$Comp
L Device:R RA5
U 1 1 5C54CAAC
P 3650 4150
AR Path="/5C54CAAC" Ref="RA5"  Part="1" 
AR Path="/5C06F581/5C54CAAC" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAAC" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAAC" Ref="R?"  Part="1" 
F 0 "RA5" V 3857 4150 50  0000 C CNN
F 1 "10k" V 3766 4150 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3580 4150 50  0001 C CNN
F 3 "~" H 3650 4150 50  0001 C CNN
F 4 "Metallfilm" V 3650 4150 50  0001 C CNN "Notes"
	1    3650 4150
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 3750 3650 3750
Connection ~ 3650 3750
Wire Wire Line
	3200 3750 3100 3750
$Comp
L Device:R RA4
U 1 1 5C54CAB9
P 3100 4150
AR Path="/5C54CAB9" Ref="RA4"  Part="1" 
AR Path="/5C06F581/5C54CAB9" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAB9" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAB9" Ref="R?"  Part="1" 
F 0 "RA4" V 3307 4150 50  0000 C CNN
F 1 "10" V 3216 4150 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3030 4150 50  0001 C CNN
F 3 "~" H 3100 4150 50  0001 C CNN
F 4 "Metallfilm" V 3100 4150 50  0001 C CNN "Notes"
	1    3100 4150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0102
U 1 1 5C54CAC0
P 3100 4300
AR Path="/5C54CAC0" Ref="#PWR0102"  Part="1" 
AR Path="/5C06F581/5C54CAC0" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CAC0" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CAC0" Ref="#PWR?"  Part="1" 
F 0 "#PWR0102" H 3100 4050 50  0001 C CNN
F 1 "GNDA" H 3105 4127 50  0000 C CNN
F 2 "" H 3100 4300 50  0001 C CNN
F 3 "" H 3100 4300 50  0001 C CNN
	1    3100 4300
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0103
U 1 1 5C54CAC6
P 3650 4300
AR Path="/5C54CAC6" Ref="#PWR0103"  Part="1" 
AR Path="/5C06F581/5C54CAC6" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CAC6" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CAC6" Ref="#PWR?"  Part="1" 
F 0 "#PWR0103" H 3650 4050 50  0001 C CNN
F 1 "GNDA" H 3655 4127 50  0000 C CNN
F 2 "" H 3650 4300 50  0001 C CNN
F 3 "" H 3650 4300 50  0001 C CNN
	1    3650 4300
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x02_Male JA2
U 1 1 5C54CACC
P 2900 3800
AR Path="/5C54CACC" Ref="JA2"  Part="1" 
AR Path="/5C06F581/5C54CACC" Ref="J?"  Part="1" 
AR Path="/5C0574B7/5C54CACC" Ref="J?"  Part="1" 
AR Path="/5C05A497/5C54CACC" Ref="J?"  Part="1" 
F 0 "JA2" H 2950 3550 50  0000 C CNN
F 1 "Jumper" H 2950 3650 50  0000 C CNN
F 2 "Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm" H 2900 3800 50  0001 C CNN
F 3 "~" H 2900 3800 50  0001 C CNN
	1    2900 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 4000 3100 3900
Wire Wire Line
	3100 3800 3100 3750
Wire Wire Line
	3650 3750 3650 4000
$Comp
L Device:R RB2
U 1 1 5C54CAD8
P 3400 5400
AR Path="/5C54CAD8" Ref="RB2"  Part="1" 
AR Path="/5C06F581/5C54CAD8" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAD8" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAD8" Ref="R?"  Part="1" 
F 0 "RB2" V 3607 5400 50  0000 C CNN
F 1 "10k" V 3516 5400 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3330 5400 50  0001 C CNN
F 3 "~" H 3400 5400 50  0001 C CNN
F 4 "Metallfilm" V 3400 5400 50  0001 C CNN "Notes"
	1    3400 5400
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4000 5050 3800 5050
Wire Wire Line
	3800 5050 3800 5400
Connection ~ 3800 5400
$Comp
L Device:R RB3
U 1 1 5C54CAE4
P 3200 5600
AR Path="/5C54CAE4" Ref="RB3"  Part="1" 
AR Path="/5C06F581/5C54CAE4" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAE4" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAE4" Ref="R?"  Part="1" 
F 0 "RB3" V 3100 5600 50  0000 C CNN
F 1 "10k" V 3000 5600 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3130 5600 50  0001 C CNN
F 3 "~" H 3200 5600 50  0001 C CNN
F 4 "Metallfilm" V 3200 5600 50  0001 C CNN "Notes"
	1    3200 5600
	0    -1   -1   0   
$EndComp
$Comp
L Device:R RB5
U 1 1 5C54CAEC
P 3500 6000
AR Path="/5C54CAEC" Ref="RB5"  Part="1" 
AR Path="/5C06F581/5C54CAEC" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAEC" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAEC" Ref="R?"  Part="1" 
F 0 "RB5" V 3707 6000 50  0000 C CNN
F 1 "10k" V 3616 6000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3430 6000 50  0001 C CNN
F 3 "~" H 3500 6000 50  0001 C CNN
F 4 "Metallfilm" V 3500 6000 50  0001 C CNN "Notes"
	1    3500 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3350 5600 3500 5600
Connection ~ 3500 5600
$Comp
L Device:R RB4
U 1 1 5C54CAF8
P 2950 6000
AR Path="/5C54CAF8" Ref="RB4"  Part="1" 
AR Path="/5C06F581/5C54CAF8" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAF8" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAF8" Ref="R?"  Part="1" 
F 0 "RB4" V 3157 6000 50  0000 C CNN
F 1 "10" V 3066 6000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2880 6000 50  0001 C CNN
F 3 "~" H 2950 6000 50  0001 C CNN
F 4 "Metallfilm" V 2950 6000 50  0001 C CNN "Notes"
	1    2950 6000
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0104
U 1 1 5C54CAFF
P 2950 6150
AR Path="/5C54CAFF" Ref="#PWR0104"  Part="1" 
AR Path="/5C06F581/5C54CAFF" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CAFF" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CAFF" Ref="#PWR?"  Part="1" 
F 0 "#PWR0104" H 2950 5900 50  0001 C CNN
F 1 "GNDA" H 2955 5977 50  0000 C CNN
F 2 "" H 2950 6150 50  0001 C CNN
F 3 "" H 2950 6150 50  0001 C CNN
	1    2950 6150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0105
U 1 1 5C54CB05
P 3500 6150
AR Path="/5C54CB05" Ref="#PWR0105"  Part="1" 
AR Path="/5C06F581/5C54CB05" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB05" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB05" Ref="#PWR?"  Part="1" 
F 0 "#PWR0105" H 3500 5900 50  0001 C CNN
F 1 "GNDA" H 3505 5977 50  0000 C CNN
F 2 "" H 3500 6150 50  0001 C CNN
F 3 "" H 3500 6150 50  0001 C CNN
	1    3500 6150
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x02_Male JB1
U 1 1 5C54CB0B
P 2750 5650
AR Path="/5C54CB0B" Ref="JB1"  Part="1" 
AR Path="/5C06F581/5C54CB0B" Ref="J?"  Part="1" 
AR Path="/5C0574B7/5C54CB0B" Ref="J?"  Part="1" 
AR Path="/5C05A497/5C54CB0B" Ref="J?"  Part="1" 
F 0 "JB1" H 2856 5828 50  0000 C CNN
F 1 "Jumper" H 2800 5500 50  0000 C CNN
F 2 "Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm" H 2750 5650 50  0001 C CNN
F 3 "~" H 2750 5650 50  0001 C CNN
	1    2750 5650
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 5850 2950 5750
Wire Wire Line
	2950 5650 2950 5600
Wire Wire Line
	3500 5600 3500 5850
Wire Wire Line
	3800 5400 3850 5400
Wire Wire Line
	3500 5600 3850 5600
$Comp
L Device:R RB1
U 1 1 5C54CB19
P 4150 5050
AR Path="/5C54CB19" Ref="RB1"  Part="1" 
AR Path="/5C06F581/5C54CB19" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CB19" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CB19" Ref="R?"  Part="1" 
F 0 "RB1" V 4357 5050 50  0000 C CNN
F 1 "10k" V 4266 5050 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4080 5050 50  0001 C CNN
F 3 "~" H 4150 5050 50  0001 C CNN
F 4 "Metallfilm" V 4150 5050 50  0001 C CNN "Notes"
	1    4150 5050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4450 5500 4450 5050
Wire Wire Line
	4450 5050 4300 5050
Text Notes 2350 4050 0    50   ~ 0
Connect for \nunbalanced\ninput signal
Connection ~ 4450 3650
$Comp
L Device:Opamp_Dual_Generic U1
U 3 1 5C54CB24
P 1400 1400
AR Path="/5C54CB24" Ref="U1"  Part="3" 
AR Path="/5C06F581/5C54CB24" Ref="U?"  Part="1" 
AR Path="/5C0574B7/5C54CB24" Ref="U?"  Part="3" 
AR Path="/5C05A497/5C54CB24" Ref="U?"  Part="3" 
F 0 "U1" H 1400 1550 50  0000 L CNN
F 1 "LM4562" H 1400 1250 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 1400 1400 50  0001 C CNN
F 3 "~" H 1400 1400 50  0001 C CNN
	3    1400 1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C1
U 1 1 5C54CB2B
P 1100 1250
AR Path="/5C54CB2B" Ref="C1"  Part="1" 
AR Path="/5C06F581/5C54CB2B" Ref="CU1+?"  Part="1" 
AR Path="/5C0574B7/5C54CB2B" Ref="CU1+?"  Part="1" 
AR Path="/5C05A497/5C54CB2B" Ref="CU1+?"  Part="1" 
F 0 "C1" H 750 1300 50  0000 L CNN
F 1 "100n" H 800 1200 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 1138 1100 50  0001 C CNN
F 3 "~" H 1100 1250 50  0001 C CNN
	1    1100 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 1750 1300 1700
Wire Wire Line
	1300 1100 1300 1050
$Comp
L power:GNDA #PWR0106
U 1 1 5C54CB34
P 900 1400
AR Path="/5C54CB34" Ref="#PWR0106"  Part="1" 
AR Path="/5C06F581/5C54CB34" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB34" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB34" Ref="#PWR?"  Part="1" 
F 0 "#PWR0106" H 900 1150 50  0001 C CNN
F 1 "GNDA" H 905 1227 50  0000 C CNN
F 2 "" H 900 1400 50  0001 C CNN
F 3 "" H 900 1400 50  0001 C CNN
	1    900  1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5C54CB3A
P 1100 1550
AR Path="/5C54CB3A" Ref="C2"  Part="1" 
AR Path="/5C06F581/5C54CB3A" Ref="CU1-?"  Part="1" 
AR Path="/5C0574B7/5C54CB3A" Ref="CU1-?"  Part="1" 
AR Path="/5C05A497/5C54CB3A" Ref="CU1-?"  Part="1" 
F 0 "C2" H 800 1400 50  0000 L CNN
F 1 "100n" H 850 1300 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 1138 1400 50  0001 C CNN
F 3 "~" H 1100 1550 50  0001 C CNN
	1    1100 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	1100 1700 1300 1700
Wire Wire Line
	900  1400 1100 1400
Connection ~ 1100 1400
Wire Wire Line
	1100 1100 1300 1100
$Comp
L power:+15V #PWR0107
U 1 1 5C54CB45
P 1300 1050
AR Path="/5C54CB45" Ref="#PWR0107"  Part="1" 
AR Path="/5C06F581/5C54CB45" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB45" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB45" Ref="#PWR?"  Part="1" 
F 0 "#PWR0107" H 1300 900 50  0001 C CNN
F 1 "+15V" H 1315 1223 50  0000 C CNN
F 2 "" H 1300 1050 50  0001 C CNN
F 3 "" H 1300 1050 50  0001 C CNN
	1    1300 1050
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0108
U 1 1 5C54CB4B
P 1300 1750
AR Path="/5C54CB4B" Ref="#PWR0108"  Part="1" 
AR Path="/5C06F581/5C54CB4B" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB4B" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB4B" Ref="#PWR?"  Part="1" 
F 0 "#PWR0108" H 1300 1850 50  0001 C CNN
F 1 "-15V" H 1315 1923 50  0000 C CNN
F 2 "" H 1300 1750 50  0001 C CNN
F 3 "" H 1300 1750 50  0001 C CNN
	1    1300 1750
	-1   0    0    1   
$EndComp
Wire Wire Line
	4450 3650 4600 3650
Text Notes 2200 5900 0    50   ~ 0
Connect for \nunbalanced\ninput signal
Connection ~ 4450 5500
Connection ~ 1300 1700
Connection ~ 1300 1100
Text Notes 3950 4350 0    50   ~ 0
Rlow for minimum offset error\ndue to input bias current.\nRlow = R1//R2//R3 ... (inputs)
Connection ~ 3700 3550
Wire Wire Line
	3650 3750 3850 3750
Wire Wire Line
	3550 5400 3650 5400
Wire Wire Line
	3650 5400 3650 5300
Connection ~ 3650 5400
Wire Wire Line
	3650 5400 3800 5400
Text Notes 3800 6150 0    50   ~ 0
For Output Stage exchange \nRA5 and RB5 for Rlow=1k.
Text Notes 3950 4100 0    50   ~ 0
For Output Stage exchange \nRA5 and RB5 for Rlow=1k.
$Comp
L Device:R RA7
U 1 1 5CA39C35
P 4850 3500
AR Path="/5CA39C35" Ref="RA7"  Part="1" 
AR Path="/5C06F581/5CA39C35" Ref="RA?"  Part="1" 
AR Path="/5C0574B7/5CA39C35" Ref="RA?"  Part="1" 
AR Path="/5C05A497/5CA39C35" Ref="RA?"  Part="1" 
F 0 "RA7" V 5057 3500 50  0000 C CNN
F 1 "220" V 4966 3500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4780 3500 50  0001 C CNN
F 3 "~" H 4850 3500 50  0001 C CNN
F 4 "Metallfilm" V 4850 3500 50  0001 C CNN "Notes"
	1    4850 3500
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4700 3500 4600 3500
Wire Wire Line
	4600 3500 4600 3650
$Comp
L Device:R RB6
U 1 1 5CA3D551
P 4800 5350
AR Path="/5CA3D551" Ref="RB6"  Part="1" 
AR Path="/5C06F581/5CA3D551" Ref="RA?"  Part="1" 
AR Path="/5C0574B7/5CA3D551" Ref="RA?"  Part="1" 
AR Path="/5C05A497/5CA3D551" Ref="RA?"  Part="1" 
F 0 "RB6" V 5007 5350 50  0000 C CNN
F 1 "220" V 4916 5350 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4730 5350 50  0001 C CNN
F 3 "~" H 4800 5350 50  0001 C CNN
F 4 "Metallfilm" V 4800 5350 50  0001 C CNN "Notes"
	1    4800 5350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4650 5350 4600 5350
Wire Wire Line
	4600 5350 4600 5500
Wire Wire Line
	4600 5500 4450 5500
Text Notes 4300 2750 0    50   ~ 0
Lowpass:\nf_c =    1 /\n     (2 * Pi * R * C)
$Comp
L Device:C ClpA1
U 1 1 5CA42A5F
P 4150 2800
F 0 "ClpA1" V 3898 2800 50  0000 C CNN
F 1 "330p" V 3989 2800 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 4188 2650 50  0001 C CNN
F 3 "~" H 4150 2800 50  0001 C CNN
	1    4150 2800
	0    1    1    0   
$EndComp
Wire Wire Line
	4300 2800 4450 2800
Wire Wire Line
	4450 2800 4450 3200
Connection ~ 4450 3200
Wire Wire Line
	4000 2800 3800 2800
Wire Wire Line
	3800 2800 3800 3200
Connection ~ 3800 3200
$Comp
L Device:C ClpB1
U 1 1 5CA46ED4
P 4150 4700
F 0 "ClpB1" V 3898 4700 50  0000 C CNN
F 1 "330p" V 3989 4700 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 4188 4550 50  0001 C CNN
F 3 "~" H 4150 4700 50  0001 C CNN
	1    4150 4700
	0    1    1    0   
$EndComp
Wire Wire Line
	4300 4700 4450 4700
Wire Wire Line
	4450 4700 4450 5050
Connection ~ 4450 5050
Wire Wire Line
	4000 4700 3800 4700
Wire Wire Line
	3800 4700 3800 5050
Connection ~ 3800 5050
Wire Wire Line
	3050 2700 3350 2700
Wire Wire Line
	3050 2400 3350 2400
$Comp
L power:GNDA #PWR0114
U 1 1 5CA73175
P 3350 2400
F 0 "#PWR0114" H 3350 2150 50  0001 C CNN
F 1 "GNDA" V 3350 2150 50  0000 C CNN
F 2 "" H 3350 2400 50  0001 C CNN
F 3 "" H 3350 2400 50  0001 C CNN
	1    3350 2400
	0    -1   -1   0   
$EndComp
$Comp
L power:GNDA #PWR0115
U 1 1 5CA73272
P 3350 2700
F 0 "#PWR0115" H 3350 2450 50  0001 C CNN
F 1 "GNDA" V 3350 2450 50  0000 C CNN
F 2 "" H 3350 2700 50  0001 C CNN
F 3 "" H 3350 2700 50  0001 C CNN
	1    3350 2700
	0    -1   -1   0   
$EndComp
Text GLabel 2000 3400 0    50   Input ~ 0
out_inA
Text GLabel 1900 3550 0    50   Input ~ 0
inA-
Text GLabel 1850 3750 0    50   Input ~ 0
inA+
Text GLabel 5550 3500 2    50   Input ~ 0
outA
Text GLabel 5450 3650 2    50   Input ~ 0
in_outA
Text GLabel 3700 2300 2    50   Input ~ 0
in_outA
Text GLabel 3150 2200 2    50   Input ~ 0
outA
Text GLabel 5500 5350 2    50   Input ~ 0
outB
Text GLabel 5350 5500 2    50   Input ~ 0
in_outB
Wire Wire Line
	5000 3500 5550 3500
Wire Wire Line
	5450 3650 4600 3650
Connection ~ 4600 3650
Wire Wire Line
	5500 5350 4950 5350
Wire Wire Line
	5350 5500 4600 5500
Connection ~ 4600 5500
Text GLabel 3700 2600 2    50   Input ~ 0
in_outB
Text GLabel 3150 2500 2    50   Input ~ 0
outB
Text GLabel 2200 2300 0    50   Input ~ 0
out_inA
Text GLabel 2100 2400 0    50   Input ~ 0
inA-
Text GLabel 2100 2200 0    50   Input ~ 0
inA+
Wire Wire Line
	2100 2400 2550 2400
Wire Wire Line
	2000 3400 3700 3400
Wire Wire Line
	3700 3400 3700 3550
Wire Wire Line
	3400 3550 1900 3550
Wire Wire Line
	1850 3750 3100 3750
Connection ~ 3100 3750
Text GLabel 2300 5300 0    50   Input ~ 0
out_inB
Text GLabel 2200 5450 0    50   Input ~ 0
inB-
Text GLabel 2200 5600 0    50   Input ~ 0
inB+
Wire Wire Line
	2200 5600 2950 5600
Connection ~ 2950 5600
Wire Wire Line
	2950 5600 3050 5600
Wire Wire Line
	3250 5400 2500 5400
Wire Wire Line
	2500 5400 2500 5450
Wire Wire Line
	2500 5450 2200 5450
Wire Wire Line
	2300 5300 3650 5300
Text GLabel 2200 2600 0    50   Input ~ 0
out_inB
Text GLabel 2100 2700 0    50   Input ~ 0
inB+
Text GLabel 2100 2500 0    50   Input ~ 0
inB-
Wire Wire Line
	3700 2600 3050 2600
Wire Wire Line
	3050 2500 3150 2500
Wire Wire Line
	3700 2300 3050 2300
Wire Wire Line
	3150 2200 3050 2200
Wire Wire Line
	2100 2200 2550 2200
Wire Wire Line
	2550 2300 2200 2300
Wire Wire Line
	2100 2500 2550 2500
Wire Wire Line
	2200 2600 2550 2600
Wire Wire Line
	2550 2700 2100 2700
$EndSCHEMATC