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281D_Cell.sch
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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 3 3
Title "281D Quad Function Generator"
Date "2020-05-08"
Rev "1.2"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
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$EndComp
$Comp
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$EndComp
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$EndComp
$Comp
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$EndComp
$Comp
L power:-15V #PWR0114
U 1 1 5D2A6137
P 3900 2850
AR Path="/5D20B987/5D2A6137" Ref="#PWR0114" Part="1"
AR Path="/5D20BA7D/5D2A6137" Ref="#PWR0314" Part="1"
F 0 "#PWR0114" H 3900 2950 50 0001 C CNN
F 1 "-15V" H 3915 3023 50 0000 C CNN
F 2 "" H 3900 2850 50 0001 C CNN
F 3 "" H 3900 2850 50 0001 C CNN
1 3900 2850
-1 0 0 1
$EndComp
Wire Wire Line
3500 1700 3500 1600
Wire Wire Line
3500 1600 3900 1600
Wire Wire Line
3200 1700 3200 1600
Wire Wire Line
3200 1600 3500 1600
Connection ~ 3500 1600
$Comp
L Device:R_Small R119
U 1 1 5D2B818B
P 3200 1400
AR Path="/5D20B987/5D2B818B" Ref="R119" Part="1"
AR Path="/5D20BA7D/5D2B818B" Ref="R319" Part="1"
F 0 "R119" V 3275 1400 50 0000 C CNN
F 1 "4k7" V 3350 1400 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 3200 1400 50 0001 C CNN
F 3 "~" H 3200 1400 50 0001 C CNN
1 3200 1400
1 0 0 -1
$EndComp
$Comp
L power:+15V #PWR0112
U 1 1 5D2B8816
P 3200 1200
AR Path="/5D20B987/5D2B8816" Ref="#PWR0112" Part="1"
AR Path="/5D20BA7D/5D2B8816" Ref="#PWR0312" Part="1"
F 0 "#PWR0112" H 3200 1050 50 0001 C CNN
F 1 "+15V" H 3215 1373 50 0000 C CNN
F 2 "" H 3200 1200 50 0001 C CNN
F 3 "" H 3200 1200 50 0001 C CNN
1 3200 1200
1 0 0 -1
$EndComp
Wire Wire Line
3200 1200 3200 1300
Wire Wire Line
3200 1500 3200 1600
Connection ~ 3200 1600
$Comp
L Device:R_Small R122
U 1 1 5D2BF02C
P 4000 1400
AR Path="/5D20B987/5D2BF02C" Ref="R122" Part="1"
AR Path="/5D20BA7D/5D2BF02C" Ref="R322" Part="1"
F 0 "R122" V 3850 1400 50 0000 C CNN
F 1 "150k" V 3925 1400 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4000 1400 50 0001 C CNN
F 3 "~" H 4000 1400 50 0001 C CNN
1 4000 1400
0 1 1 0
$EndComp
Wire Wire Line
3800 1900 3800 1500
$Comp
L Device:R_Small R123
U 1 1 5D2C492B
P 4000 1500
AR Path="/5D20B987/5D2C492B" Ref="R123" Part="1"
AR Path="/5D20BA7D/5D2C492B" Ref="R323" Part="1"
F 0 "R123" V 4075 1500 50 0000 C CNN
F 1 "680R" V 4150 1500 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4000 1500 50 0001 C CNN
F 3 "~" H 4000 1500 50 0001 C CNN
1 4000 1500
0 1 1 0
$EndComp
Wire Wire Line
3900 1500 3800 1500
Connection ~ 3800 1500
Wire Wire Line
3800 1500 3800 1400
$Comp
L Device:R_Small R124
U 1 1 5D2C6A86
P 4200 1700
AR Path="/5D20B987/5D2C6A86" Ref="R124" Part="1"
AR Path="/5D20BA7D/5D2C6A86" Ref="R324" Part="1"
F 0 "R124" V 4125 1700 50 0000 C CNN
F 1 "680R" V 4050 1700 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4200 1700 50 0001 C CNN
F 3 "~" H 4200 1700 50 0001 C CNN
1 4200 1700
-1 0 0 1
$EndComp
Wire Wire Line
4100 1500 4200 1500
Wire Wire Line
4200 1500 4200 1600
$Comp
L Amplifier_Operational:LM13700 U104/204
U 1 1 5D2CD849
P 4700 2000
AR Path="/5D20B987/5D2CD849" Ref="U104/204" Part="1"
AR Path="/5D20BA7D/5D2CD849" Ref="U304/404" Part="1"
F 0 "U104/204" H 4650 2250 50 0000 L CNN
F 1 "LM13700" H 4650 2175 50 0000 L CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 4400 2025 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 4400 2025 50 0001 C CNN
1 4700 2000
1 0 0 -1
$EndComp
Wire Wire Line
4200 2100 4400 2100
Wire Wire Line
4200 1800 4200 2100
NoConn ~ 4400 2000
$Comp
L Device:R_Small R121
U 1 1 5D2D6CD6
P 3500 3400
AR Path="/5D20B987/5D2D6CD6" Ref="R121" Part="1"
AR Path="/5D20BA7D/5D2D6CD6" Ref="R321" Part="1"
F 0 "R121" V 3575 3400 50 0000 C CNN
F 1 "47k" V 3650 3400 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 3500 3400 50 0001 C CNN
F 3 "~" H 3500 3400 50 0001 C CNN
1 3500 3400
0 1 1 0
$EndComp
Wire Wire Line
3300 3400 3400 3400
Wire Wire Line
4400 1900 4300 1900
Wire Wire Line
4300 1900 4300 2500
$Comp
L Device:R_Small R125
U 1 1 5D2DB7B1
P 4300 2700
AR Path="/5D20B987/5D2DB7B1" Ref="R125" Part="1"
AR Path="/5D20BA7D/5D2DB7B1" Ref="R325" Part="1"
F 0 "R125" V 4375 2700 50 0000 C CNN
F 1 "47k" V 4450 2700 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4300 2700 50 0001 C CNN
F 3 "~" H 4300 2700 50 0001 C CNN
1 4300 2700
1 0 0 -1
$EndComp
Wire Wire Line
4300 3400 4300 2800
$Comp
L Device:R_Small R127
U 1 1 5D2DDCB1
P 4500 2500
AR Path="/5D20B987/5D2DDCB1" Ref="R127" Part="1"
AR Path="/5D20BA7D/5D2DDCB1" Ref="R327" Part="1"
F 0 "R127" V 4350 2500 50 0000 C CNN
F 1 "680R" V 4425 2500 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4500 2500 50 0001 C CNN
F 3 "~" H 4500 2500 50 0001 C CNN
1 4500 2500
0 1 1 0
$EndComp
Connection ~ 4300 2500
Wire Wire Line
4300 2500 4300 2600
Wire Wire Line
4300 2500 4400 2500
$Comp
L Device:R_Small R129
U 1 1 5D2E04C7
P 5000 2650
AR Path="/5D20B987/5D2E04C7" Ref="R129" Part="1"
AR Path="/5D20BA7D/5D2E04C7" Ref="R329" Part="1"
F 0 "R129" V 5075 2650 50 0000 C CNN
F 1 "4k7" V 5150 2650 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5000 2650 50 0001 C CNN
F 3 "~" H 5000 2650 50 0001 C CNN
1 5000 2650
1 0 0 -1
$EndComp
Wire Wire Line
5000 2550 5000 2100
Wire Wire Line
4600 2500 4700 2500
Wire Wire Line
4700 2500 4700 2600
$Comp
L power:GND #PWR0120
U 1 1 5D2E78FC
P 4700 2600
AR Path="/5D20B987/5D2E78FC" Ref="#PWR0120" Part="1"
AR Path="/5D20BA7D/5D2E78FC" Ref="#PWR0319" Part="1"
F 0 "#PWR0120" H 4700 2350 50 0001 C CNN
F 1 "GND" H 4705 2427 50 0000 C CNN
F 2 "" H 4700 2600 50 0001 C CNN
F 3 "" H 4700 2600 50 0001 C CNN
1 4700 2600
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0117
U 1 1 5D2E813F
P 4400 1500
AR Path="/5D20B987/5D2E813F" Ref="#PWR0117" Part="1"
AR Path="/5D20BA7D/5D2E813F" Ref="#PWR0316" Part="1"
F 0 "#PWR0117" H 4400 1250 50 0001 C CNN
F 1 "GND" H 4500 1375 50 0000 C CNN
F 2 "" H 4400 1500 50 0001 C CNN
F 3 "" H 4400 1500 50 0001 C CNN
1 4400 1500
1 0 0 -1
$EndComp
Wire Wire Line
4200 1500 4400 1500
Connection ~ 4200 1500
$Comp
L Device:R_Small R131
U 1 1 5D2EADC6
P 5400 2000
AR Path="/5D20B987/5D2EADC6" Ref="R131" Part="1"
AR Path="/5D20BA7D/5D2EADC6" Ref="R331" Part="1"
F 0 "R131" V 5250 2000 50 0000 C CNN
F 1 "4k7" V 5325 2000 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5400 2000 50 0001 C CNN
F 3 "~" H 5400 2000 50 0001 C CNN
1 5400 2000
0 1 1 0
$EndComp
$Comp
L Device:R_Small R132
U 1 1 5D2EEB83
P 5400 2200
AR Path="/5D20B987/5D2EEB83" Ref="R132" Part="1"
AR Path="/5D20BA7D/5D2EEB83" Ref="R332" Part="1"
F 0 "R132" V 5475 2200 50 0000 C CNN
F 1 "4k7" V 5550 2200 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5400 2200 50 0001 C CNN
F 3 "~" H 5400 2200 50 0001 C CNN
1 5400 2200
0 1 1 0
$EndComp
Wire Wire Line
5600 2000 5500 2000
Wire Wire Line
5600 2200 5500 2200
Wire Wire Line
5000 2000 5200 2000
$Comp
L power:GND #PWR0121
U 1 1 5D2F9227
P 5200 2300
AR Path="/5D20B987/5D2F9227" Ref="#PWR0121" Part="1"
AR Path="/5D20BA7D/5D2F9227" Ref="#PWR0320" Part="1"
F 0 "#PWR0121" H 5200 2050 50 0001 C CNN
F 1 "GND" H 5205 2127 50 0000 C CNN
F 2 "" H 5200 2300 50 0001 C CNN
F 3 "" H 5200 2300 50 0001 C CNN
1 5200 2300
1 0 0 -1
$EndComp
Wire Wire Line
5200 2300 5200 2200
Wire Wire Line
5200 2200 5300 2200
$Comp
L Device:R_Small R136
U 1 1 5D2FBE1F
P 5900 2700
AR Path="/5D20B987/5D2FBE1F" Ref="R136" Part="1"
AR Path="/5D20BA7D/5D2FBE1F" Ref="R336" Part="1"
F 0 "R136" V 5850 2500 50 0000 C CNN
F 1 "10k" V 5850 2850 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5900 2700 50 0001 C CNN
F 3 "~" H 5900 2700 50 0001 C CNN
1 5900 2700
0 1 1 0
$EndComp
$Comp
L Device:R_Small R137
U 1 1 5D2FC32B
P 5900 2800
AR Path="/5D20B987/5D2FC32B" Ref="R137" Part="1"
AR Path="/5D20BA7D/5D2FC32B" Ref="R337" Part="1"
F 0 "R137" V 5850 2600 50 0000 C CNN
F 1 "470k" V 5850 2975 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5900 2800 50 0001 C CNN
F 3 "~" H 5900 2800 50 0001 C CNN
1 5900 2800
0 1 1 0
$EndComp
Wire Wire Line
4300 3400 6300 3400
Connection ~ 4300 3400
$Comp
L Device:R_Small R130
U 1 1 5D309693
P 5300 3200
AR Path="/5D20B987/5D309693" Ref="R130" Part="1"
AR Path="/5D20BA7D/5D309693" Ref="R330" Part="1"
F 0 "R130" V 5150 3200 50 0000 C CNN
F 1 "4k7" V 5225 3200 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5300 3200 50 0001 C CNN
F 3 "~" H 5300 3200 50 0001 C CNN
1 5300 3200
0 1 1 0
$EndComp
Wire Wire Line
6200 2100 6400 2100
Wire Wire Line
6400 2100 6400 2700
Wire Wire Line
3900 1600 3900 1950
Wire Wire Line
3500 2100 3500 2200
Wire Wire Line
3500 2200 3600 2200
$Comp
L Device:R_Small R120
U 1 1 5D29AB4A
P 3500 2550
AR Path="/5D20B987/5D29AB4A" Ref="R120" Part="1"
AR Path="/5D20BA7D/5D29AB4A" Ref="R320" Part="1"
F 0 "R120" V 3575 2550 50 0000 C CNN
F 1 "4M7" V 3650 2550 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 3500 2550 50 0001 C CNN
F 3 "~" H 3500 2550 50 0001 C CNN
1 3500 2550
1 0 0 -1
$EndComp
Wire Wire Line
3900 2650 3900 2750
Wire Wire Line
3900 2750 3500 2750
Wire Wire Line
3500 2750 3500 2650
Connection ~ 3900 2750
Wire Wire Line
3900 2750 3900 2850
Wire Wire Line
3900 2350 3900 2450
Wire Wire Line
3500 2200 3500 2450
Connection ~ 3500 2200
$Comp
L Device:R_POT_TRIM TR101
U 1 1 5D3319DC
P 4700 1400
AR Path="/5D20B987/5D3319DC" Ref="TR101" Part="1"
AR Path="/5D20BA7D/5D3319DC" Ref="TR301" Part="1"
F 0 "TR101" V 4600 1400 50 0000 C CNN
F 1 "50k" V 4525 1400 50 0000 C CNN
F 2 "Potentiometer_SMD:Potentiometer_Bourns_3314J_Vertical" H 4700 1400 50 0001 C CNN
F 3 "~" H 4700 1400 50 0001 C CNN
1 4700 1400
-1 0 0 -1
$EndComp
$Comp
L power:+15V #PWR0119
U 1 1 5D33669D
P 4700 1200
AR Path="/5D20B987/5D33669D" Ref="#PWR0119" Part="1"
AR Path="/5D20BA7D/5D33669D" Ref="#PWR0318" Part="1"
F 0 "#PWR0119" H 4700 1050 50 0001 C CNN
F 1 "+15V" H 4715 1373 50 0000 C CNN
F 2 "" H 4700 1200 50 0001 C CNN
F 3 "" H 4700 1200 50 0001 C CNN
1 4700 1200
1 0 0 -1
$EndComp
NoConn ~ 4700 1550
$Comp
L Device:C_Small C101
U 1 1 5D34128A
P 5900 1800
AR Path="/5D20B987/5D34128A" Ref="C101" Part="1"
AR Path="/5D20BA7D/5D34128A" Ref="C301" Part="1"
F 0 "C101" V 5700 1800 50 0000 C CNN
F 1 "220n" V 5775 1800 50 0000 C CNN
F 2 "Capacitor_SMD:C_2416_6041Metric" H 5900 1800 50 0001 C CNN
F 3 "~" H 5900 1800 50 0001 C CNN
1 5900 1800
0 1 1 0
$EndComp
Wire Wire Line
6000 1800 6400 1800
Wire Wire Line
6400 1800 6400 2100
Connection ~ 6400 2100
Wire Wire Line
5800 1800 5200 1800
Wire Wire Line
5200 1800 5200 2000
Connection ~ 5200 2000
Wire Wire Line
5200 2000 5300 2000
Wire Wire Line
2100 5100 2350 5100
Connection ~ 2100 5100
Wire Wire Line
2650 5100 2900 5100
$Comp
L Device:R_Small R139
U 1 1 5D35E39C
P 6100 4300
AR Path="/5D20B987/5D35E39C" Ref="R139" Part="1"
AR Path="/5D20BA7D/5D35E39C" Ref="R339" Part="1"
F 0 "R139" V 6025 4300 50 0000 C CNN
F 1 "1M" V 5950 4300 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 6100 4300 50 0001 C CNN
F 3 "~" H 6100 4300 50 0001 C CNN
1 6100 4300
-1 0 0 1
$EndComp
$Comp
L Device:R_Small R135
U 1 1 5D35EBB1
P 5800 4300
AR Path="/5D20B987/5D35EBB1" Ref="R135" Part="1"
AR Path="/5D20BA7D/5D35EBB1" Ref="R335" Part="1"
F 0 "R135" V 5650 4300 50 0000 C CNN
F 1 "49k9" V 5725 4300 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5800 4300 50 0001 C CNN
F 3 "~" H 5800 4300 50 0001 C CNN
1 5800 4300
1 0 0 -1
$EndComp
$Comp
L Device:R_Small R133
U 1 1 5D366E5C
P 5500 4100
AR Path="/5D20B987/5D366E5C" Ref="R133" Part="1"
AR Path="/5D20BA7D/5D366E5C" Ref="R333" Part="1"
F 0 "R133" V 5575 4100 50 0000 C CNN
F 1 "22k" V 5650 4100 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5500 4100 50 0001 C CNN
F 3 "~" H 5500 4100 50 0001 C CNN
1 5500 4100
0 1 1 0
$EndComp
Wire Wire Line
5200 3700 5100 3700
Wire Wire Line
5100 3700 5100 3750
Wire Wire Line
5100 4050 5100 4100
Wire Wire Line
5100 4100 5400 4100
Wire Wire Line
5900 4100 5900 3800
Wire Wire Line
5900 3800 5800 3800
$Comp
L power:GND #PWR0125
U 1 1 5D387327
P 5800 4500
AR Path="/5D20B987/5D387327" Ref="#PWR0125" Part="1"
AR Path="/5D20BA7D/5D387327" Ref="#PWR0324" Part="1"
F 0 "#PWR0125" H 5800 4250 50 0001 C CNN
F 1 "GND" H 5805 4327 50 0000 C CNN
F 2 "" H 5800 4500 50 0001 C CNN
F 3 "" H 5800 4500 50 0001 C CNN
1 5800 4500
1 0 0 -1
$EndComp
Wire Wire Line
5800 4400 5800 4500
$Comp
L power:+15V #PWR0127
U 1 1 5D38C1CF
P 6100 4100
AR Path="/5D20B987/5D38C1CF" Ref="#PWR0127" Part="1"
AR Path="/5D20BA7D/5D38C1CF" Ref="#PWR0326" Part="1"
F 0 "#PWR0127" H 6100 3950 50 0001 C CNN
F 1 "+15V" H 6100 4250 50 0000 C CNN
F 2 "" H 6100 4100 50 0001 C CNN
F 3 "" H 6100 4100 50 0001 C CNN
1 6100 4100
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C102
U 1 1 5D38C765
P 4900 3700
AR Path="/5D20B987/5D38C765" Ref="C102" Part="1"
AR Path="/5D20BA7D/5D38C765" Ref="C302" Part="1"
F 0 "C102" V 4700 3700 50 0000 C CNN
F 1 "47n" V 4775 3700 50 0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 4900 3700 50 0001 C CNN
F 3 "~" H 4900 3700 50 0001 C CNN
1 4900 3700
0 1 1 0
$EndComp
Wire Wire Line
5000 3700 5100 3700
Connection ~ 5100 3700
$Comp
L Device:R_Small R126
U 1 1 5D391D67
P 4250 3900
AR Path="/5D20B987/5D391D67" Ref="R126" Part="1"
AR Path="/5D20BA7D/5D391D67" Ref="R326" Part="1"
F 0 "R126" V 4400 3900 50 0000 C CNN
F 1 "10k" V 4325 3900 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4250 3900 50 0001 C CNN
F 3 "~" H 4250 3900 50 0001 C CNN
1 4250 3900
-1 0 0 1
$EndComp
$Comp
L Device:R_Small R128
U 1 1 5D39283D
P 4500 3900
AR Path="/5D20B987/5D39283D" Ref="R128" Part="1"
AR Path="/5D20BA7D/5D39283D" Ref="R328" Part="1"
F 0 "R128" V 4650 3900 50 0000 C CNN
F 1 "22k" V 4575 3900 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 4500 3900 50 0001 C CNN
F 3 "~" H 4500 3900 50 0001 C CNN
1 4500 3900
-1 0 0 1
$EndComp
Wire Wire Line
4700 3750 4700 3700
Connection ~ 4700 3700
Wire Wire Line
4700 3700 4800 3700
$Comp
L power:GND #PWR0118
U 1 1 5D3A63D8
P 4500 4100
AR Path="/5D20B987/5D3A63D8" Ref="#PWR0118" Part="1"
AR Path="/5D20BA7D/5D3A63D8" Ref="#PWR0317" Part="1"
F 0 "#PWR0118" H 4500 3850 50 0001 C CNN
F 1 "GND" H 4505 3927 50 0000 C CNN
F 2 "" H 4500 4100 50 0001 C CNN
F 3 "" H 4500 4100 50 0001 C CNN
1 4500 4100
1 0 0 -1
$EndComp
$Comp
L power:-15V #PWR0116
U 1 1 5D3A67C2
P 4250 4100
AR Path="/5D20B987/5D3A67C2" Ref="#PWR0116" Part="1"
AR Path="/5D20BA7D/5D3A67C2" Ref="#PWR0315" Part="1"
F 0 "#PWR0116" H 4250 4200 50 0001 C CNN
F 1 "-15V" H 4265 4273 50 0000 C CNN
F 2 "" H 4250 4100 50 0001 C CNN
F 3 "" H 4250 4100 50 0001 C CNN
1 4250 4100
-1 0 0 1
$EndComp
$Comp
L Transistor_BJT:MMBT3904 Q103
U 1 1 5D3A7AB8
P 5700 5000
AR Path="/5D20B987/5D3A7AB8" Ref="Q103" Part="1"
AR Path="/5D20BA7D/5D3A7AB8" Ref="Q303" Part="1"
F 0 "Q103" H 5875 5025 50 0000 L CNN
F 1 "MMBT3904" H 5875 4950 50 0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 5900 4925 50 0001 C CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 5700 5000 50 0001 C CNN
1 5700 5000
-1 0 0 -1
$EndComp
$Comp
L Device:R_Small R140
U 1 1 5D3B53B1
P 6250 5000
AR Path="/5D20B987/5D3B53B1" Ref="R140" Part="1"
AR Path="/5D20BA7D/5D3B53B1" Ref="R340" Part="1"
F 0 "R140" V 6325 5000 50 0000 C CNN
F 1 "22k" V 6400 5000 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 6250 5000 50 0001 C CNN
F 3 "~" H 6250 5000 50 0001 C CNN
1 6250 5000
0 1 1 0
$EndComp
$Comp
L Device:R_Small R138
U 1 1 5D3BB093
P 6000 5400
AR Path="/5D20B987/5D3BB093" Ref="R138" Part="1"
AR Path="/5D20BA7D/5D3BB093" Ref="R338" Part="1"
F 0 "R138" V 6075 5400 50 0000 C CNN
F 1 "100k" V 6150 5400 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 6000 5400 50 0001 C CNN
F 3 "~" H 6000 5400 50 0001 C CNN
1 6000 5400
1 0 0 -1
$EndComp
Wire Wire Line
5900 5000 6000 5000
Connection ~ 6000 5000
Wire Wire Line
6000 5000 6150 5000
$Comp
L Device:R_Small R134
U 1 1 5D3C6FE4
P 5600 5400
AR Path="/5D20B987/5D3C6FE4" Ref="R134" Part="1"
AR Path="/5D20BA7D/5D3C6FE4" Ref="R334" Part="1"
F 0 "R134" V 5675 5400 50 0000 C CNN
F 1 "6k8" V 5750 5400 50 0000 C CNN
F 2 "Resistor_SMD:R_0805_2012Metric" H 5600 5400 50 0001 C CNN
F 3 "~" H 5600 5400 50 0001 C CNN
1 5600 5400
1 0 0 -1
$EndComp
Wire Wire Line
5600 5200 5600 5300
Wire Wire Line
5600 5500 5600 5600
Wire Wire Line
6000 5600 6000 5500
Wire Wire Line
6000 5000 6000 5300
Wire Wire Line
6000 5600 6000 5700
$Comp
L Amplifier_Operational:TL074 U101
U 5 1 5D24DF09
P 1625 10000
AR Path="/5D20B987/5D24DF09" Ref="U101" Part="5"
AR Path="/5D20BA7D/5D24DF09" Ref="U301" Part="5"
F 0 "U101" H 1525 10550 50 0000 C CNN
F 1 "TL074" H 1525 10475 50 0000 C CNN
F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 1575 10100 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 1675 10200 50 0001 C CNN
5 1625 10000
1 0 0 -1
$EndComp
Wire Wire Line
5100 4100 5100 6000
Connection ~ 5100 4100
Wire Wire Line
2100 5400 2100 6100
Wire Wire Line
1400 5200 1500 5200
Wire Wire Line
1500 5200 1500 5100
Wire Wire Line