EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr USLetter 11000 8500 encoding utf-8 Sheet 9 9 Title "potentiosynth" Date "2021-07-07" Rev "B" Comp "University of Wisconsin-Madison" Comment1 "Wickens Group" Comment2 "Department of Chemistry" Comment3 "Blaise Thompson" Comment4 "blaise.thompson@wisc.edu" $EndDescr Text HLabel 3600 4400 2 50 BiDi ~ 0 COUNTER Text HLabel 3600 4700 2 50 BiDi ~ 0 REFERENCE $Comp L power:GND #PWR? U 1 1 5E5D6BC0 P 8500 4600 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 "#PWR0134" H 8500 4350 50 0001 C CNN F 1 "GND" H 8505 4427 50 0000 C CNN F 2 "" H 8500 4600 50 0001 C CNN F 3 "" H 8500 4600 50 0001 C CNN 1 8500 4600 1 0 0 -1 $EndComp $Comp L Device:R_US R-? U 1 1 5E5D6BC6 P 6750 5000 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-7" V 6850 4900 50 0000 C CNN F 1 "1k" V 6850 5100 50 0000 C CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 6790 4990 50 0001 C CNN F 3 "~" H 6750 5000 50 0001 C CNN 1 6750 5000 0 1 -1 0 $EndComp $Comp L power:GND #PWR? U 1 1 5E66C0EF P 7000 4600 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 "#PWR0135" H 7000 4350 50 0001 C CNN F 1 "GND" H 7100 4500 50 0000 C CNN F 2 "" H 7000 4600 50 0001 C CNN F 3 "" H 7000 4600 50 0001 C CNN 1 7000 4600 1 0 0 -1 $EndComp $Comp L Device:R_US R+? U 1 1 5E5D6BCC P 6750 4300 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+7" V 6650 4400 50 0000 C CNN F 1 "1k" V 6650 4200 50 0000 C CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 6790 4290 50 0001 C CNN F 3 "~" H 6750 4300 50 0001 C CNN 1 6750 4300 0 -1 1 0 $EndComp Text Notes 8200 5200 0 50 ~ 0 TRANSISTOR CLOSES WHEN\nVOLTAGE DIFF. > 20 mV $Comp L Device:R_US RF? U 1 1 5E5D6BB9 P 7800 5000 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 "RF7" V 7700 5100 50 0000 C CNN F 1 "100k" V 7700 4900 50 0000 C CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 7840 4990 50 0001 C CNN F 3 "~" H 7800 5000 50 0001 C CNN 1 7800 5000 0 -1 1 0 $EndComp $Comp L Device:R_US RG? U 1 1 5E66B3AD P 7000 4450 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 "RG7" V 7100 4450 50 0000 C CNN F 1 "100k" V 6886 4450 50 0000 C CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 7040 4440 50 0001 C CNN F 3 "~" H 7000 4450 50 0001 C CNN 1 7000 4450 -1 0 0 -1 $EndComp Text HLabel 8750 4000 2 50 Output ~ 0 ERROR $Comp L Device:R_POT_US RV1 U 1 1 6096BA3A P 2000 4300 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 "RV7" H 1933 4346 50 0000 R CNN F 1 "R_POT_US" H 1933 4255 50 0000 R CNN F 2 "Potentiometer_THT:Potentiometer_Bourns_3296X_Horizontal" H 2000 4300 50 0001 C CNN F 3 "~" H 2000 4300 50 0001 C CNN 1 2000 4300 1 0 0 -1 $EndComp $Comp L power:GND #PWR0132 U 1 1 6096D142 P 2000 4450 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 "#PWR0106" H 2000 4200 50 0001 C CNN F 1 "GND" H 2005 4277 50 0000 C CNN F 2 "" H 2000 4450 50 0001 C CNN F 3 "" H 2000 4450 50 0001 C CNN 1 2000 4450 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0133 U 1 1 6096D768 P 2000 4150 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 "#PWR0109" H 2000 4000 50 0001 C CNN F 1 "+15V" H 2015 4323 50 0000 C CNN F 2 "" H 2000 4150 50 0001 C CNN F 3 "" H 2000 4150 50 0001 C CNN 1 2000 4150 1 0 0 -1 $EndComp Wire Wire Line 7000 4300 6900 4300 $Comp L Device:Q_NMOS_GSD QE1 U 1 1 609CA423 P 8400 4400 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 "QE7" H 8604 4446 50 0000 L CNN F 1 "2N70002K" H 8604 4355 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-23_Handsoldering" H 8600 4500 50 0001 C CNN F 3 "~" H 8400 4400 50 0001 C CNN 1 8400 4400 1 0 0 -1 $EndComp $Comp L power:GND #PWR010 U 1 1 60EBDE29 P 2000 6550 AR Path="/5E39B760/60EBDE29" Ref="#PWR010" Part="1" AR Path="/5E3EAB60/60EBDE29" Ref="#PWR08" Part="1" AR Path="/5E3EC44B/60EBDE29" Ref="#PWR012" Part="1" AR Path="/5E4039EC/60EBDE29" Ref="#PWR02" Part="1" AR Path="/5E4039F2/60EBDE29" Ref="#PWR04" Part="1" AR Path="/5E3ED540/60EBDE29" Ref="#PWR06" Part="1" AR Path="/5E4039E0/60EBDE29" Ref="#PWR014" Part="1" AR Path="/5E4039E6/60EBDE29" Ref="#PWR016" Part="1" F 0 "#PWR02" H 2000 6300 50 0001 C CNN F 1 "GND" H 2005 6377 50 0000 C CNN F 2 "" H 2000 6550 50 0001 C CNN F 3 "" H 2000 6550 50 0001 C CNN 1 2000 6550 1 0 0 -1 $EndComp Wire Wire Line 3000 4500 2900 4500 Wire Wire Line 2900 4500 2900 4700 Wire Notes Line 2750 3750 2750 5250 Wire Notes Line 2750 5250 4500 5250 Wire Notes Line 4500 5250 4500 3750 Wire Notes Line 2750 3750 4500 3750 Wire Notes Line 4750 5250 4750 3750 Wire Notes Line 6250 3750 6250 5250 Wire Wire Line 3600 4700 2900 4700 Connection ~ 2900 4700 Wire Wire Line 2900 4700 2900 5000 Wire Wire Line 5000 4300 4400 4300 Wire Wire Line 4400 4300 4400 5000 Wire Wire Line 4400 5000 2900 5000 Wire Wire Line 5000 4500 4900 4500 Wire Wire Line 4900 4500 4900 4700 Wire Wire Line 4900 4700 5700 4700 Wire Wire Line 5700 4400 5600 4400 Wire Notes Line 6250 3750 9250 3750 Wire Notes Line 9250 3750 9250 5250 Wire Notes Line 6250 5250 9250 5250 Text Notes 6300 3850 0 50 ~ 0 DIFFERENTIAL AMPLIFIER Text Notes 4800 3850 0 50 ~ 0 BUFFER Text Notes 2800 3850 0 50 ~ 0 DRIVER Wire Wire Line 5700 4400 5700 4700 Connection ~ 7000 4300 Wire Wire Line 5700 5000 5700 4700 Connection ~ 5700 4700 Wire Notes Line 4750 5250 6000 5250 Wire Notes Line 6000 5250 6000 3750 Wire Notes Line 6000 3750 4750 3750 Wire Wire Line 2150 4300 2500 4300 Wire Wire Line 5700 5000 6600 5000 Wire Wire Line 6600 4300 6150 4300 Wire Wire Line 6150 4300 6150 3500 Wire Wire Line 6150 3500 2500 3500 Wire Wire Line 2500 3500 2500 4300 Connection ~ 2500 4300 Wire Wire Line 2500 4300 3000 4300 Wire Wire Line 7500 4500 7400 4500 Wire Wire Line 7400 4500 7400 5000 Wire Wire Line 7400 5000 6900 5000 Wire Wire Line 8750 4000 8500 4000 Wire Wire Line 8500 4000 8500 4200 $Comp L power:+15V #PWR09 U 1 1 60F8E210 P 2000 5950 AR Path="/5E39B760/60F8E210" Ref="#PWR09" Part="1" AR Path="/5E3EAB60/60F8E210" Ref="#PWR07" Part="1" AR Path="/5E3EC44B/60F8E210" Ref="#PWR011" Part="1" AR Path="/5E4039EC/60F8E210" Ref="#PWR01" Part="1" AR Path="/5E4039F2/60F8E210" Ref="#PWR03" Part="1" AR Path="/5E3ED540/60F8E210" Ref="#PWR05" Part="1" AR Path="/5E4039E0/60F8E210" Ref="#PWR013" Part="1" AR Path="/5E4039E6/60F8E210" Ref="#PWR015" Part="1" F 0 "#PWR01" H 2000 5800 50 0001 C CNN F 1 "+15V" H 2015 6123 50 0000 C CNN F 2 "" H 2000 5950 50 0001 C CNN F 3 "" H 2000 5950 50 0001 C CNN 1 2000 5950 1 0 0 -1 $EndComp Text Notes 3100 6450 0 50 ~ 0 TLV9154IDR - QUAD OP AMP\n0-15 V (RAIL to RAIL)\n75 mA OUT\n125 uV OFFSET VOLTAGE\n10 pA INPUT BIAS CURRENT Wire Wire Line 8100 4400 8150 4400 Wire Wire Line 7000 4300 7500 4300 Wire Wire Line 8150 4400 8150 5000 Connection ~ 8150 4400 Wire Wire Line 8150 4400 8200 4400 Connection ~ 7400 5000 Wire Wire Line 7950 5000 8150 5000 Wire Wire Line 7400 5000 7650 5000 $Comp L Device:Opamp_Quad_Generic U1 U 2 1 60F94CD3 P 7800 4400 AR Path="/5E39B760/60F94CD3" Ref="U1" Part="2" AR Path="/5E3EAB60/60F94CD3" Ref="U2" Part="2" AR Path="/5E3EC44B/60F94CD3" Ref="U3" Part="2" AR Path="/5E4039EC/60F94CD3" Ref="U7" Part="2" AR Path="/5E4039F2/60F94CD3" Ref="U8" Part="2" AR Path="/5E3ED540/60F94CD3" Ref="U4" Part="2" AR Path="/5E4039E0/60F94CD3" Ref="U5" Part="2" AR Path="/5E4039E6/60F94CD3" Ref="U6" Part="2" F 0 "U7" H 7800 4767 50 0000 C CNN F 1 "TLV9154IDR" H 7800 4676 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 7800 4400 50 0001 C CNN F 3 "~" H 7800 4400 50 0001 C CNN 2 7800 4400 1 0 0 -1 $EndComp $Comp L Device:Opamp_Quad_Generic U1 U 5 1 60EB0CAF P 2100 6250 AR Path="/5E39B760/60EB0CAF" Ref="U1" Part="5" AR Path="/5E3EAB60/60EB0CAF" Ref="U2" Part="5" AR Path="/5E3EC44B/60EB0CAF" Ref="U3" Part="5" AR Path="/5E4039EC/60EB0CAF" Ref="U7" Part="5" AR Path="/5E4039F2/60EB0CAF" Ref="U8" Part="5" AR Path="/5E3ED540/60EB0CAF" Ref="U4" Part="5" AR Path="/5E4039E0/60EB0CAF" Ref="U5" Part="5" AR Path="/5E4039E6/60EB0CAF" Ref="U6" Part="5" F 0 "U7" H 2058 6296 50 0000 L CNN F 1 "TLV9154IDR" H 2058 6205 50 0000 L CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 2100 6250 50 0001 C CNN F 3 "~" H 2100 6250 50 0001 C CNN 5 2100 6250 1 0 0 -1 $EndComp $Comp L Device:Opamp_Quad_Generic U1 U 3 1 60EAD1D9 P 5300 4400 AR Path="/5E39B760/60EAD1D9" Ref="U1" Part="3" AR Path="/5E3EAB60/60EAD1D9" Ref="U2" Part="3" AR Path="/5E3EC44B/60EAD1D9" Ref="U3" Part="3" AR Path="/5E4039EC/60EAD1D9" Ref="U7" Part="3" AR Path="/5E4039F2/60EAD1D9" Ref="U8" Part="3" AR Path="/5E3ED540/60EAD1D9" Ref="U4" Part="3" AR Path="/5E4039E0/60EAD1D9" Ref="U5" Part="3" AR Path="/5E4039E6/60EAD1D9" Ref="U6" Part="3" F 0 "U7" H 5300 4767 50 0000 C CNN F 1 "TLV9154IDR" H 5300 4676 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 5300 4400 50 0001 C CNN F 3 "~" H 5300 4400 50 0001 C CNN 3 5300 4400 1 0 0 -1 $EndComp $Comp L Device:Opamp_Quad_Generic U1 U 4 1 60EAED48 P 3300 4400 AR Path="/5E39B760/60EAED48" Ref="U1" Part="4" AR Path="/5E3EAB60/60EAED48" Ref="U2" Part="4" AR Path="/5E3EC44B/60EAED48" Ref="U3" Part="4" AR Path="/5E4039EC/60EAED48" Ref="U7" Part="4" AR Path="/5E4039F2/60EAED48" Ref="U8" Part="4" AR Path="/5E3ED540/60EAED48" Ref="U4" Part="4" AR Path="/5E4039E0/60EAED48" Ref="U5" Part="4" AR Path="/5E4039E6/60EAED48" Ref="U6" Part="4" F 0 "U7" H 3300 4767 50 0000 C CNN F 1 "TLV9154IDR" H 3300 4676 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 3300 4400 50 0001 C CNN F 3 "~" H 3300 4400 50 0001 C CNN 4 3300 4400 1 0 0 -1 $EndComp $EndSCHEMATC