EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 3 9
Title "potentiosynth"
Date "2021-05-07"
Rev "A"
Comp "University of Wisconsin-Madison"
Comment1 "Wickens Group"
Comment2 "Department of Chemistry"
Comment3 "Blaise Thompson"
Comment4 "blaise.thompson@wisc.edu"
$EndDescr
Text HLabel 6850 3800 2    50   BiDi ~ 0
COUNTER
Text HLabel 6850 4400 2    50   BiDi ~ 0
REFERENCE
$Comp
L power:GND #PWR?
U 1 1 5E5D6B75
P 5400 4100
AR Path="/5E5D6B75" Ref="#PWR?"  Part="1" 
AR Path="/5E39B760/5E5D6B75" Ref="#PWR0112"  Part="1" 
AR Path="/5E3EAB60/5E5D6B75" Ref="#PWR0119"  Part="1" 
AR Path="/5E4039E6/5E5D6B75" Ref="#PWR0125"  Part="1" 
AR Path="/5E4039EC/5E5D6B75" Ref="#PWR0131"  Part="1" 
AR Path="/5E4039F2/5E5D6B75" Ref="#PWR0137"  Part="1" 
AR Path="/5E4039E0/5E5D6B75" Ref="#PWR0143"  Part="1" 
AR Path="/5E3EC44B/5E5D6B75" Ref="#PWR0149"  Part="1" 
AR Path="/5E3ED540/5E5D6B75" Ref="#PWR0155"  Part="1" 
F 0 "#PWR0125" H 5400 3850 50  0001 C CNN
F 1 "GND" H 5405 3927 50  0000 C CNN
F 2 "" H 5400 4100 50  0001 C CNN
F 3 "" H 5400 4100 50  0001 C CNN
	1    5400 4100
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 2800 4600 3500
$Comp
L power:GND #PWR?
U 1 1 5E5D6BC0
P 5900 3300
AR Path="/5E5D6BC0" Ref="#PWR?"  Part="1" 
AR Path="/5E39B760/5E5D6BC0" Ref="#PWR0115"  Part="1" 
AR Path="/5E3EAB60/5E5D6BC0" Ref="#PWR0122"  Part="1" 
AR Path="/5E4039E6/5E5D6BC0" Ref="#PWR0128"  Part="1" 
AR Path="/5E4039EC/5E5D6BC0" Ref="#PWR0134"  Part="1" 
AR Path="/5E4039F2/5E5D6BC0" Ref="#PWR0140"  Part="1" 
AR Path="/5E4039E0/5E5D6BC0" Ref="#PWR0146"  Part="1" 
AR Path="/5E3EC44B/5E5D6BC0" Ref="#PWR0152"  Part="1" 
AR Path="/5E3ED540/5E5D6BC0" Ref="#PWR0158"  Part="1" 
F 0 "#PWR0128" H 5900 3050 50  0001 C CNN
F 1 "GND" H 5905 3127 50  0000 C CNN
F 2 "" H 5900 3300 50  0001 C CNN
F 3 "" H 5900 3300 50  0001 C CNN
	1    5900 3300
	1    0    0    -1  
$EndComp
$Comp
L Device:R_US R-?
U 1 1 5E5D6BC6
P 4050 3500
AR Path="/5E5D6BC6" Ref="R-?"  Part="1" 
AR Path="/5E39B760/5E5D6BC6" Ref="R-1"  Part="1" 
AR Path="/5E3EAB60/5E5D6BC6" Ref="R-2"  Part="1" 
AR Path="/5E4039E6/5E5D6BC6" Ref="R-6"  Part="1" 
AR Path="/5E4039EC/5E5D6BC6" Ref="R-7"  Part="1" 
AR Path="/5E4039F2/5E5D6BC6" Ref="R-8"  Part="1" 
AR Path="/5E4039E0/5E5D6BC6" Ref="R-5"  Part="1" 
AR Path="/5E3EC44B/5E5D6BC6" Ref="R-3"  Part="1" 
AR Path="/5E3ED540/5E5D6BC6" Ref="R-4"  Part="1" 
F 0 "R-8" V 4150 3400 50  0000 C CNN
F 1 "1k" V 4150 3600 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 4090 3490 50  0001 C CNN
F 3 "~" H 4050 3500 50  0001 C CNN
	1    4050 3500
	0    1    -1   0   
$EndComp
Wire Wire Line
	4600 3900 5000 3900
$Comp
L power:GND #PWR?
U 1 1 5E66C0EF
P 4300 3300
AR Path="/5E66C0EF" Ref="#PWR?"  Part="1" 
AR Path="/5E39B760/5E66C0EF" Ref="#PWR0117"  Part="1" 
AR Path="/5E3EAB60/5E66C0EF" Ref="#PWR0123"  Part="1" 
AR Path="/5E4039E6/5E66C0EF" Ref="#PWR0129"  Part="1" 
AR Path="/5E4039EC/5E66C0EF" Ref="#PWR0135"  Part="1" 
AR Path="/5E4039F2/5E66C0EF" Ref="#PWR0141"  Part="1" 
AR Path="/5E4039E0/5E66C0EF" Ref="#PWR0147"  Part="1" 
AR Path="/5E3EC44B/5E66C0EF" Ref="#PWR0153"  Part="1" 
AR Path="/5E3ED540/5E66C0EF" Ref="#PWR0159"  Part="1" 
F 0 "#PWR0129" H 4300 3050 50  0001 C CNN
F 1 "GND" H 4400 3200 50  0000 C CNN
F 2 "" H 4300 3300 50  0001 C CNN
F 3 "" H 4300 3300 50  0001 C CNN
	1    4300 3300
	1    0    0    -1  
$EndComp
$Comp
L Device:R_US R+?
U 1 1 5E5D6BCC
P 4050 3000
AR Path="/5E5D6BCC" Ref="R+?"  Part="1" 
AR Path="/5E39B760/5E5D6BCC" Ref="R+1"  Part="1" 
AR Path="/5E3EAB60/5E5D6BCC" Ref="R+2"  Part="1" 
AR Path="/5E4039E6/5E5D6BCC" Ref="R+6"  Part="1" 
AR Path="/5E4039EC/5E5D6BCC" Ref="R+7"  Part="1" 
AR Path="/5E4039F2/5E5D6BCC" Ref="R+8"  Part="1" 
AR Path="/5E4039E0/5E5D6BCC" Ref="R+5"  Part="1" 
AR Path="/5E3EC44B/5E5D6BCC" Ref="R+3"  Part="1" 
AR Path="/5E3ED540/5E5D6BCC" Ref="R+4"  Part="1" 
F 0 "R+8" V 3950 3100 50  0000 C CNN
F 1 "1k" V 3950 2900 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 4090 2990 50  0001 C CNN
F 3 "~" H 4050 3000 50  0001 C CNN
	1    4050 3000
	0    -1   1    0   
$EndComp
Text Notes 6300 2800 0    50   ~ 0
DIFFERENTIAL AMPLIFIER\nTRANSISTOR WILL CLOSE WHEN\nVOLTAGE DIFF.  >  20 mV 
Wire Wire Line
	5900 2900 6850 2900
$Comp
L Device:R_US RF?
U 1 1 5E5D6BB9
P 5000 2800
AR Path="/5E5D6BB9" Ref="RF?"  Part="1" 
AR Path="/5E39B760/5E5D6BB9" Ref="RF1"  Part="1" 
AR Path="/5E3EAB60/5E5D6BB9" Ref="RF2"  Part="1" 
AR Path="/5E4039E6/5E5D6BB9" Ref="RF6"  Part="1" 
AR Path="/5E4039EC/5E5D6BB9" Ref="RF7"  Part="1" 
AR Path="/5E4039F2/5E5D6BB9" Ref="RF8"  Part="1" 
AR Path="/5E4039E0/5E5D6BB9" Ref="RF5"  Part="1" 
AR Path="/5E3EC44B/5E5D6BB9" Ref="RF3"  Part="1" 
AR Path="/5E3ED540/5E5D6BB9" Ref="RF4"  Part="1" 
F 0 "RF8" V 4900 2900 50  0000 C CNN
F 1 "100k" V 4900 2700 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 5040 2790 50  0001 C CNN
F 3 "~" H 5000 2800 50  0001 C CNN
	1    5000 2800
	0    -1   1    0   
$EndComp
$Comp
L Device:R_US RG?
U 1 1 5E66B3AD
P 4300 3150
AR Path="/5E66B3AD" Ref="RG?"  Part="1" 
AR Path="/5E39B760/5E66B3AD" Ref="RG1"  Part="1" 
AR Path="/5E3EAB60/5E66B3AD" Ref="RG2"  Part="1" 
AR Path="/5E4039E6/5E66B3AD" Ref="RG6"  Part="1" 
AR Path="/5E4039EC/5E66B3AD" Ref="RG7"  Part="1" 
AR Path="/5E4039F2/5E66B3AD" Ref="RG8"  Part="1" 
AR Path="/5E4039E0/5E66B3AD" Ref="RG5"  Part="1" 
AR Path="/5E3EC44B/5E66B3AD" Ref="RG3"  Part="1" 
AR Path="/5E3ED540/5E66B3AD" Ref="RG4"  Part="1" 
F 0 "RG8" V 4400 3150 50  0000 C CNN
F 1 "100k" V 4186 3150 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 4340 3140 50  0001 C CNN
F 3 "~" H 4300 3150 50  0001 C CNN
	1    4300 3150
	-1   0    0    -1  
$EndComp
Text HLabel 6850 2900 2    50   Output ~ 0
ERROR
$Comp
L power:+15V #PWR?
U 1 1 5E5D6B6F
P 5400 3100
AR Path="/5E5D6B6F" Ref="#PWR?"  Part="1" 
AR Path="/5E39B760/5E5D6B6F" Ref="#PWR0111"  Part="1" 
AR Path="/5E3EAB60/5E5D6B6F" Ref="#PWR0118"  Part="1" 
AR Path="/5E4039E6/5E5D6B6F" Ref="#PWR0124"  Part="1" 
AR Path="/5E4039EC/5E5D6B6F" Ref="#PWR0130"  Part="1" 
AR Path="/5E4039F2/5E5D6B6F" Ref="#PWR0136"  Part="1" 
AR Path="/5E4039E0/5E5D6B6F" Ref="#PWR0142"  Part="1" 
AR Path="/5E3EC44B/5E5D6B6F" Ref="#PWR0148"  Part="1" 
AR Path="/5E3ED540/5E5D6B6F" Ref="#PWR0154"  Part="1" 
F 0 "#PWR0124" H 5400 2950 50  0001 C CNN
F 1 "+15V" H 5415 3273 50  0000 C CNN
F 2 "" H 5400 3100 50  0001 C CNN
F 3 "" H 5400 3100 50  0001 C CNN
	1    5400 3100
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 4400 6850 4400
$Comp
L Device:R_POT_US RV1
U 1 1 6096BA3A
P 2850 3500
AR Path="/5E39B760/6096BA3A" Ref="RV1"  Part="1" 
AR Path="/5E3EAB60/6096BA3A" Ref="RV2"  Part="1" 
AR Path="/5E3EC44B/6096BA3A" Ref="RV3"  Part="1" 
AR Path="/5E3ED540/6096BA3A" Ref="RV4"  Part="1" 
AR Path="/5E4039E0/6096BA3A" Ref="RV5"  Part="1" 
AR Path="/5E4039E6/6096BA3A" Ref="RV6"  Part="1" 
AR Path="/5E4039EC/6096BA3A" Ref="RV7"  Part="1" 
AR Path="/5E4039F2/6096BA3A" Ref="RV8"  Part="1" 
F 0 "RV8" H 2783 3546 50  0000 R CNN
F 1 "R_POT_US" H 2783 3455 50  0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3296X_Horizontal" H 2850 3500 50  0001 C CNN
F 3 "~" H 2850 3500 50  0001 C CNN
	1    2850 3500
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0132
U 1 1 6096D142
P 2850 3650
AR Path="/5E39B760/6096D142" Ref="#PWR0132"  Part="1" 
AR Path="/5E3EAB60/6096D142" Ref="#PWR0126"  Part="1" 
AR Path="/5E3EC44B/6096D142" Ref="#PWR0138"  Part="1" 
AR Path="/5E3ED540/6096D142" Ref="#PWR0120"  Part="1" 
AR Path="/5E4039E0/6096D142" Ref="#PWR0144"  Part="1" 
AR Path="/5E4039E6/6096D142" Ref="#PWR0150"  Part="1" 
AR Path="/5E4039EC/6096D142" Ref="#PWR0106"  Part="1" 
AR Path="/5E4039F2/6096D142" Ref="#PWR0113"  Part="1" 
F 0 "#PWR0150" H 2850 3400 50  0001 C CNN
F 1 "GND" H 2855 3477 50  0000 C CNN
F 2 "" H 2850 3650 50  0001 C CNN
F 3 "" H 2850 3650 50  0001 C CNN
	1    2850 3650
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR0133
U 1 1 6096D768
P 2850 3350
AR Path="/5E39B760/6096D768" Ref="#PWR0133"  Part="1" 
AR Path="/5E3EAB60/6096D768" Ref="#PWR0127"  Part="1" 
AR Path="/5E3EC44B/6096D768" Ref="#PWR0139"  Part="1" 
AR Path="/5E3ED540/6096D768" Ref="#PWR0121"  Part="1" 
AR Path="/5E4039E0/6096D768" Ref="#PWR0145"  Part="1" 
AR Path="/5E4039E6/6096D768" Ref="#PWR0151"  Part="1" 
AR Path="/5E4039EC/6096D768" Ref="#PWR0109"  Part="1" 
AR Path="/5E4039F2/6096D768" Ref="#PWR0114"  Part="1" 
F 0 "#PWR0151" H 2850 3200 50  0001 C CNN
F 1 "+15V" H 2865 3523 50  0000 C CNN
F 2 "" H 2850 3350 50  0001 C CNN
F 3 "" H 2850 3350 50  0001 C CNN
	1    2850 3350
	1    0    0    -1  
$EndComp
Wire Wire Line
	5600 3800 6850 3800
Wire Wire Line
	4600 3900 4600 4400
Wire Wire Line
	3900 3500 3900 4400
Wire Wire Line
	3900 4400 4600 4400
Connection ~ 4600 4400
Wire Notes Line
	7500 2500 3500 2500
Wire Notes Line
	3500 3600 7500 3600
Wire Wire Line
	5000 3700 3750 3700
Wire Wire Line
	3750 3700 3750 3500
Wire Wire Line
	3000 3500 3750 3500
Connection ~ 3750 3500
Wire Wire Line
	3750 3500 3750 3000
Wire Wire Line
	4200 3500 4600 3500
Wire Wire Line
	4300 3000 4200 3000
Wire Wire Line
	3900 3000 3750 3000
Wire Wire Line
	4300 3000 4500 3000
Wire Wire Line
	4500 3000 4500 3300
Wire Wire Line
	4500 3300 5000 3300
Connection ~ 4300 3000
Connection ~ 4600 3500
Wire Wire Line
	4600 3500 5000 3500
Wire Wire Line
	5150 2800 5600 2800
Wire Wire Line
	4850 2800 4600 2800
Wire Notes Line
	7500 2500 7500 4700
Wire Notes Line
	7500 4700 3500 4700
Wire Notes Line
	3500 2500 3500 4700
$Comp
L TLV9152IDR:TLV9152IDR U1
U 1 1 6096020C
P 5000 3600
AR Path="/5E39B760/6096020C" Ref="U1"  Part="1" 
AR Path="/5E3EAB60/6096020C" Ref="U2"  Part="1" 
AR Path="/5E3EC44B/6096020C" Ref="U3"  Part="1" 
AR Path="/5E3ED540/6096020C" Ref="U4"  Part="1" 
AR Path="/5E4039E0/6096020C" Ref="U5"  Part="1" 
AR Path="/5E4039E6/6096020C" Ref="U6"  Part="1" 
AR Path="/5E4039EC/6096020C" Ref="U7"  Part="1" 
AR Path="/5E4039F2/6096020C" Ref="U8"  Part="1" 
F 0 "U8" H 5250 4150 60  0000 C CNN
F 1 "TLV9152IDR" H 5050 4050 60  0000 C CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 5150 3150 60  0001 C CNN
F 3 "" H 5000 3600 60  0000 C CNN
	1    5000 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	5600 2800 5600 3100
Connection ~ 5600 3100
Wire Wire Line
	5600 3100 5600 3400
$Comp
L Device:Q_NMOS_GSD QE1
U 1 1 609CA423
P 5800 3100
AR Path="/5E39B760/609CA423" Ref="QE1"  Part="1" 
AR Path="/5E3EAB60/609CA423" Ref="QE2"  Part="1" 
AR Path="/5E3EC44B/609CA423" Ref="QE3"  Part="1" 
AR Path="/5E3ED540/609CA423" Ref="QE4"  Part="1" 
AR Path="/5E4039E0/609CA423" Ref="QE5"  Part="1" 
AR Path="/5E4039E6/609CA423" Ref="QE6"  Part="1" 
AR Path="/5E4039EC/609CA423" Ref="QE7"  Part="1" 
AR Path="/5E4039F2/609CA423" Ref="QE8"  Part="1" 
F 0 "QE8" H 6004 3146 50  0000 L CNN
F 1 "Q_NMOS_GSD" H 6004 3055 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23_Handsoldering" H 6000 3200 50  0001 C CNN
F 3 "~" H 5800 3100 50  0001 C CNN
	1    5800 3100
	1    0    0    -1  
$EndComp
$EndSCHEMATC