EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 4
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Amplifier_Operational:LM13700 U?
U 1 1 5FF0E3A8
P 4400 1850
F 0 "U?" H 4400 2217 50  0000 C CNN
F 1 "LM13700" H 4400 2126 50  0000 C CNN
F 2 "" H 4100 1875 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 4100 1875 50  0001 C CNN
	1    4400 1850
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM13700 U?
U 3 1 5FF0EB11
P 4250 5300
F 0 "U?" H 4250 5667 50  0000 C CNN
F 1 "LM13700" H 4250 5576 50  0000 C CNN
F 2 "" H 3950 5325 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 3950 5325 50  0001 C CNN
	3    4250 5300
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM13700 U?
U 2 1 5FF0F002
P 5600 1850
F 0 "U?" H 5750 2000 50  0000 C CNN
F 1 "LM13700" H 5850 1900 50  0000 C CNN
F 2 "" H 5300 1875 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 5300 1875 50  0001 C CNN
	2    5600 1850
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM13700 U?
U 4 1 5FF0F602
P 5450 5300
F 0 "U?" H 5350 5648 50  0000 C CNN
F 1 "LM13700" H 5350 5557 50  0000 C CNN
F 2 "" H 5150 5325 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 5150 5325 50  0001 C CNN
	4    5450 5300
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM13700 U?
U 5 1 5FF10492
P 9050 3700
F 0 "U?" H 9008 3746 50  0000 L CNN
F 1 "LM13700" H 9008 3655 50  0000 L CNN
F 2 "" H 8750 3725 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 8750 3725 50  0001 C CNN
	5    9050 3700
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FF168F2
P 3750 1350
F 0 "R?" H 3680 1304 50  0000 R CNN
F 1 "11k" H 3680 1395 50  0000 R CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3680 1350 50  0001 C CNN
F 3 "~" H 3750 1350 50  0001 C CNN
	1    3750 1350
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 5FF1784B
P 8450 3700
F 0 "C?" H 8565 3746 50  0000 L CNN
F 1 "0.1u" H 8565 3655 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 8488 3550 50  0001 C CNN
F 3 "~" H 8450 3700 50  0001 C CNN
	1    8450 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	8450 3550 8450 3400
Wire Wire Line
	8450 3400 8700 3400
Wire Wire Line
	8450 3850 8450 4000
Wire Wire Line
	8450 4000 8700 4000
$Comp
L power:+12V #PWR?
U 1 1 5FF197AC
P 3750 1100
F 0 "#PWR?" H 3750 950 50  0001 C CNN
F 1 "+12V" H 3765 1273 50  0000 C CNN
F 2 "" H 3750 1100 50  0001 C CNN
F 3 "" H 3750 1100 50  0001 C CNN
	1    3750 1100
	1    0    0    -1  
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5FF19F68
P 8700 4000
F 0 "#PWR?" H 8700 4100 50  0001 C CNN
F 1 "-12V" H 8715 4173 50  0000 C CNN
F 2 "" H 8700 4000 50  0001 C CNN
F 3 "" H 8700 4000 50  0001 C CNN
	1    8700 4000
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FF1A3A4
P 3100 2100
F 0 "#PWR?" H 3100 1850 50  0001 C CNN
F 1 "GND" H 3105 1927 50  0000 C CNN
F 2 "" H 3100 2100 50  0001 C CNN
F 3 "" H 3100 2100 50  0001 C CNN
	1    3100 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 1200 3750 1100
Wire Wire Line
	3750 1500 3750 1850
Wire Wire Line
	3750 1850 4100 1850
$Comp
L Device:R R?
U 1 1 5FF1C4D8
P 3450 1750
F 0 "R?" V 3243 1750 50  0000 C CNN
F 1 "510R" V 3334 1750 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3380 1750 50  0001 C CNN
F 3 "~" H 3450 1750 50  0001 C CNN
	1    3450 1750
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF1D173
P 3450 1950
F 0 "R?" V 3550 1950 50  0000 C CNN
F 1 "510R" V 3650 1950 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3380 1950 50  0001 C CNN
F 3 "~" H 3450 1950 50  0001 C CNN
	1    3450 1950
	0    1    1    0   
$EndComp
Wire Wire Line
	3600 1950 3750 1950
Wire Wire Line
	3600 1750 4100 1750
Wire Wire Line
	3300 1950 3100 1950
Wire Wire Line
	3100 1950 3100 1750
Wire Wire Line
	3100 1750 3300 1750
Wire Wire Line
	3100 2100 3100 1950
Connection ~ 3100 1950
Wire Wire Line
	3750 2500 3750 1950
Connection ~ 3750 1950
Wire Wire Line
	3750 1950 4100 1950
Connection ~ 8700 4000
Wire Wire Line
	8700 4000 8950 4000
$Comp
L power:+12V #PWR?
U 1 1 5FF20699
P 8700 3400
F 0 "#PWR?" H 8700 3250 50  0001 C CNN
F 1 "+12V" H 8715 3573 50  0000 C CNN
F 2 "" H 8700 3400 50  0001 C CNN
F 3 "" H 8700 3400 50  0001 C CNN
	1    8700 3400
	1    0    0    -1  
$EndComp
Connection ~ 8700 3400
Wire Wire Line
	8700 3400 8950 3400
Text HLabel 2850 2500 0    50   Input ~ 0
V_SIG_IN_1
$Comp
L Device:R R?
U 1 1 5FF21944
P 3300 2500
F 0 "R?" V 3400 2500 50  0000 C CNN
F 1 "300k" V 3500 2500 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3230 2500 50  0001 C CNN
F 3 "~" H 3300 2500 50  0001 C CNN
	1    3300 2500
	0    1    1    0   
$EndComp
Wire Wire Line
	2850 2500 3150 2500
Wire Wire Line
	3450 2500 3750 2500
$Comp
L Device:R R?
U 1 1 5FF22BF3
P 5100 2150
F 0 "R?" H 5300 2100 50  0000 C CNN
F 1 "300k" H 5250 2200 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5030 2150 50  0001 C CNN
F 3 "~" H 5100 2150 50  0001 C CNN
	1    5100 2150
	-1   0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF25107
P 5700 2300
F 0 "R?" H 5850 2250 50  0000 C CNN
F 1 "5k" H 5850 2350 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5630 2300 50  0001 C CNN
F 3 "~" H 5700 2300 50  0001 C CNN
	1    5700 2300
	-1   0    0    1   
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5FF25B63
P 5700 2450
F 0 "#PWR?" H 5700 2550 50  0001 C CNN
F 1 "-12V" H 5715 2623 50  0000 C CNN
F 2 "" H 5700 2450 50  0001 C CNN
F 3 "" H 5700 2450 50  0001 C CNN
	1    5700 2450
	-1   0    0    1   
$EndComp
Wire Wire Line
	5700 2150 5700 2050
$Comp
L power:GND #PWR?
U 1 1 5FF27306
P 5100 2450
F 0 "#PWR?" H 5100 2200 50  0001 C CNN
F 1 "GND" H 5105 2277 50  0000 C CNN
F 2 "" H 5100 2450 50  0001 C CNN
F 3 "" H 5100 2450 50  0001 C CNN
	1    5100 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	5100 2450 5100 2300
Wire Wire Line
	4700 1850 5100 1850
Wire Wire Line
	5100 2000 5100 1850
Connection ~ 5100 1850
Wire Wire Line
	5100 1850 5300 1850
$Comp
L Amplifier_Operational:TL084 U?
U 4 1 5FF28D27
P 4100 3450
F 0 "U?" H 4200 3150 50  0000 C CNN
F 1 "TL084" H 4250 3250 50  0000 C CNN
F 2 "" H 4050 3550 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl081.pdf" H 4150 3650 50  0001 C CNN
	4    4100 3450
	1    0    0    1   
$EndComp
Text HLabel 6150 2050 2    50   Output ~ 0
V_SIG_OUT_1
Wire Wire Line
	6150 2050 5700 2050
Connection ~ 5700 2050
Wire Wire Line
	5700 2050 5700 1950
$Comp
L Device:R R?
U 1 1 5FF304E8
P 4700 2650
F 0 "R?" H 4900 2600 50  0000 C CNN
F 1 "21k" H 4900 2700 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4630 2650 50  0001 C CNN
F 3 "~" H 4700 2650 50  0001 C CNN
	1    4700 2650
	-1   0    0    1   
$EndComp
Wire Wire Line
	4700 2500 4700 1950
Wire Wire Line
	4400 3450 4700 3450
Wire Wire Line
	4700 3450 4700 3000
$Comp
L Device:R R?
U 1 1 5FF347BE
P 4100 3000
F 0 "R?" V 4200 3100 50  0000 C CNN
F 1 "100k" V 4200 2900 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4030 3000 50  0001 C CNN
F 3 "~" H 4100 3000 50  0001 C CNN
	1    4100 3000
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF34C8B
P 3350 3000
F 0 "R?" V 3450 3100 50  0000 C CNN
F 1 "91k" V 3450 2900 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3280 3000 50  0001 C CNN
F 3 "~" H 3350 3000 50  0001 C CNN
	1    3350 3000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4250 3000 4700 3000
Connection ~ 4700 3000
Wire Wire Line
	4700 3000 4700 2800
Wire Wire Line
	3500 3000 3700 3000
Wire Wire Line
	3800 3350 3700 3350
Wire Wire Line
	3700 3350 3700 3000
Connection ~ 3700 3000
Wire Wire Line
	3700 3000 3950 3000
$Comp
L Device:R R?
U 1 1 5FF37981
P 2650 3000
F 0 "R?" V 2750 3100 50  0000 C CNN
F 1 "15k" V 2750 2900 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2580 3000 50  0001 C CNN
F 3 "~" H 2650 3000 50  0001 C CNN
	1    2650 3000
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF37F27
P 3000 3250
F 0 "R?" H 3150 3300 50  0000 C CNN
F 1 "10k" H 3150 3200 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2930 3250 50  0001 C CNN
F 3 "~" H 3000 3250 50  0001 C CNN
	1    3000 3250
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FF385AE
P 3000 3400
F 0 "#PWR?" H 3000 3150 50  0001 C CNN
F 1 "GND" H 3005 3227 50  0000 C CNN
F 2 "" H 3000 3400 50  0001 C CNN
F 3 "" H 3000 3400 50  0001 C CNN
	1    3000 3400
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 5FF38B11
P 2250 3000
F 0 "#PWR?" H 2250 2850 50  0001 C CNN
F 1 "+12V" H 2265 3173 50  0000 C CNN
F 2 "" H 2250 3000 50  0001 C CNN
F 3 "" H 2250 3000 50  0001 C CNN
	1    2250 3000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2250 3000 2500 3000
Wire Wire Line
	2800 3000 3000 3000
Wire Wire Line
	3000 3100 3000 3000
Connection ~ 3000 3000
Wire Wire Line
	3000 3000 3200 3000
Wire Wire Line
	3350 3750 3350 3550
Wire Wire Line
	3350 3550 3800 3550
Text HLabel 2800 3750 0    50   Input ~ 0
CV_1
Wire Wire Line
	2800 3750 3350 3750
$Comp
L Device:R R?
U 1 1 5FF70BCD
P 3600 4800
F 0 "R?" H 3530 4754 50  0000 R CNN
F 1 "11k" H 3530 4845 50  0000 R CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3530 4800 50  0001 C CNN
F 3 "~" H 3600 4800 50  0001 C CNN
	1    3600 4800
	-1   0    0    1   
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 5FF70BD7
P 3600 4550
F 0 "#PWR?" H 3600 4400 50  0001 C CNN
F 1 "+12V" H 3615 4723 50  0000 C CNN
F 2 "" H 3600 4550 50  0001 C CNN
F 3 "" H 3600 4550 50  0001 C CNN
	1    3600 4550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FF70BE1
P 2950 5550
F 0 "#PWR?" H 2950 5300 50  0001 C CNN
F 1 "GND" H 2955 5377 50  0000 C CNN
F 2 "" H 2950 5550 50  0001 C CNN
F 3 "" H 2950 5550 50  0001 C CNN
	1    2950 5550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3600 4650 3600 4550
Wire Wire Line
	3600 4950 3600 5300
Wire Wire Line
	3600 5300 3950 5300
$Comp
L Device:R R?
U 1 1 5FF70BEE
P 3300 5200
F 0 "R?" V 3093 5200 50  0000 C CNN
F 1 "510R" V 3184 5200 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3230 5200 50  0001 C CNN
F 3 "~" H 3300 5200 50  0001 C CNN
	1    3300 5200
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF70BF8
P 3300 5400
F 0 "R?" V 3400 5400 50  0000 C CNN
F 1 "510R" V 3500 5400 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3230 5400 50  0001 C CNN
F 3 "~" H 3300 5400 50  0001 C CNN
	1    3300 5400
	0    1    1    0   
$EndComp
Wire Wire Line
	3450 5400 3600 5400
Wire Wire Line
	3450 5200 3950 5200
Wire Wire Line
	3150 5400 2950 5400
Wire Wire Line
	2950 5400 2950 5200
Wire Wire Line
	2950 5200 3150 5200
Wire Wire Line
	2950 5550 2950 5400
Connection ~ 2950 5400
Wire Wire Line
	3600 5950 3600 5400
Connection ~ 3600 5400
Wire Wire Line
	3600 5400 3950 5400
Text HLabel 2700 5950 0    50   Input ~ 0
V_SIG_IN_2
$Comp
L Device:R R?
U 1 1 5FF70C0D
P 3150 5950
F 0 "R?" V 3250 5950 50  0000 C CNN
F 1 "300k" V 3350 5950 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3080 5950 50  0001 C CNN
F 3 "~" H 3150 5950 50  0001 C CNN
	1    3150 5950
	0    1    1    0   
$EndComp
Wire Wire Line
	2700 5950 3000 5950
Wire Wire Line
	3300 5950 3600 5950
$Comp
L Device:R R?
U 1 1 5FF70C19
P 4950 5600
F 0 "R?" H 5150 5550 50  0000 C CNN
F 1 "300k" H 5100 5650 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4880 5600 50  0001 C CNN
F 3 "~" H 4950 5600 50  0001 C CNN
	1    4950 5600
	-1   0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF70C23
P 5550 5750
F 0 "R?" H 5700 5700 50  0000 C CNN
F 1 "5k" H 5700 5800 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5480 5750 50  0001 C CNN
F 3 "~" H 5550 5750 50  0001 C CNN
	1    5550 5750
	-1   0    0    1   
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5FF70C2D
P 5550 5900
F 0 "#PWR?" H 5550 6000 50  0001 C CNN
F 1 "-12V" H 5565 6073 50  0000 C CNN
F 2 "" H 5550 5900 50  0001 C CNN
F 3 "" H 5550 5900 50  0001 C CNN
	1    5550 5900
	-1   0    0    1   
$EndComp
Wire Wire Line
	5550 5600 5550 5500
$Comp
L power:GND #PWR?
U 1 1 5FF70C38
P 4950 5900
F 0 "#PWR?" H 4950 5650 50  0001 C CNN
F 1 "GND" H 4955 5727 50  0000 C CNN
F 2 "" H 4950 5900 50  0001 C CNN
F 3 "" H 4950 5900 50  0001 C CNN
	1    4950 5900
	1    0    0    -1  
$EndComp
Wire Wire Line
	4950 5900 4950 5750
Wire Wire Line
	4550 5300 4950 5300
Wire Wire Line
	4950 5450 4950 5300
Connection ~ 4950 5300
Wire Wire Line
	4950 5300 5150 5300
$Comp
L Amplifier_Operational:TL084 U?
U 4 1 5FF70C47
P 3950 6900
F 0 "U?" H 4050 6600 50  0000 C CNN
F 1 "TL084" H 4100 6700 50  0000 C CNN
F 2 "" H 3900 7000 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl081.pdf" H 4000 7100 50  0001 C CNN
	4    3950 6900
	1    0    0    1   
$EndComp
Text HLabel 6000 5500 2    50   Output ~ 0
V_SIG_OUT_2
Wire Wire Line
	6000 5500 5550 5500
Connection ~ 5550 5500
Wire Wire Line
	5550 5500 5550 5400
$Comp
L Device:R R?
U 1 1 5FF70C55
P 4550 6100
F 0 "R?" H 4750 6050 50  0000 C CNN
F 1 "21k" H 4750 6150 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4480 6100 50  0001 C CNN
F 3 "~" H 4550 6100 50  0001 C CNN
	1    4550 6100
	-1   0    0    1   
$EndComp
Wire Wire Line
	4550 5950 4550 5400
Wire Wire Line
	4250 6900 4550 6900
Wire Wire Line
	4550 6900 4550 6450
$Comp
L Device:R R?
U 1 1 5FF70C62
P 3950 6450
F 0 "R?" V 4050 6550 50  0000 C CNN
F 1 "100k" V 4050 6350 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3880 6450 50  0001 C CNN
F 3 "~" H 3950 6450 50  0001 C CNN
	1    3950 6450
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF70C6C
P 3200 6450
F 0 "R?" V 3300 6550 50  0000 C CNN
F 1 "91k" V 3300 6350 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3130 6450 50  0001 C CNN
F 3 "~" H 3200 6450 50  0001 C CNN
	1    3200 6450
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4100 6450 4550 6450
Connection ~ 4550 6450
Wire Wire Line
	4550 6450 4550 6250
Wire Wire Line
	3350 6450 3550 6450
Wire Wire Line
	3650 6800 3550 6800
Wire Wire Line
	3550 6800 3550 6450
Connection ~ 3550 6450
Wire Wire Line
	3550 6450 3800 6450
$Comp
L Device:R R?
U 1 1 5FF70C7E
P 2500 6450
F 0 "R?" V 2600 6550 50  0000 C CNN
F 1 "15k" V 2600 6350 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2430 6450 50  0001 C CNN
F 3 "~" H 2500 6450 50  0001 C CNN
	1    2500 6450
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 5FF70C88
P 2850 6700
F 0 "R?" H 3000 6750 50  0000 C CNN
F 1 "10k" H 3000 6650 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2780 6700 50  0001 C CNN
F 3 "~" H 2850 6700 50  0001 C CNN
	1    2850 6700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FF70C92
P 2850 6850
F 0 "#PWR?" H 2850 6600 50  0001 C CNN
F 1 "GND" H 2855 6677 50  0000 C CNN
F 2 "" H 2850 6850 50  0001 C CNN
F 3 "" H 2850 6850 50  0001 C CNN
	1    2850 6850
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 5FF70C9C
P 2100 6450
F 0 "#PWR?" H 2100 6300 50  0001 C CNN
F 1 "+12V" H 2115 6623 50  0000 C CNN
F 2 "" H 2100 6450 50  0001 C CNN
F 3 "" H 2100 6450 50  0001 C CNN
	1    2100 6450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 6450 2350 6450
Wire Wire Line
	2650 6450 2850 6450
Wire Wire Line
	2850 6550 2850 6450
Connection ~ 2850 6450
Wire Wire Line
	2850 6450 3050 6450
Wire Wire Line
	3200 7200 3200 7000
Wire Wire Line
	3200 7000 3650 7000
Text HLabel 2650 7200 0    50   Input ~ 0
CV_2
Wire Wire Line
	2650 7200 3200 7200
$EndSCHEMATC