EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 3
Title "Reflow Oven Controller"
Date "2019-09-02"
Rev "v1.0"
Comp "Shimatta"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Amplifier_Operational:MCP6401UT-xOT U304
U 1 1 5D8C684C
P 2300 1300
F 0 "U304" H 2200 1300 50  0000 L CNN
F 1 "MCP6V31U" H 2300 1100 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5_HandSoldering" H 2300 1300 50  0001 L CNN
F 3 "http://ww1.microchip.com/downloads/en/devicedoc/22229d.pdf" H 2300 1300 50  0001 C CNN
	1    2300 1300
	1    0    0    -1  
$EndComp
Text HLabel 10000 1300 2    50   Output ~ 0
FORCE+
Text HLabel 10000 1600 2    50   Output ~ 0
FORCE-
Text HLabel 10000 1400 2    50   Input ~ 0
SENS+
Text HLabel 10000 1500 2    50   Output ~ 0
SENS-
Wire Wire Line
	10000 1500 9550 1500
Wire Wire Line
	10000 1400 9050 1400
Wire Wire Line
	9050 1400 9050 1800
Connection ~ 9050 1400
Wire Wire Line
	9550 1500 9550 1800
Connection ~ 9550 1500
$Comp
L Device:C C311
U 1 1 5D8EB53F
P 9050 1950
F 0 "C311" H 9165 1996 50  0000 L CNN
F 1 "100n" H 9165 1905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 9088 1800 50  0001 C CNN
F 3 "~" H 9050 1950 50  0001 C CNN
	1    9050 1950
	1    0    0    -1  
$EndComp
$Comp
L Device:C C312
U 1 1 5D8ECC3D
P 9550 1950
F 0 "C312" H 9665 1996 50  0000 L CNN
F 1 "100n" H 9665 1905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 9588 1800 50  0001 C CNN
F 3 "~" H 9550 1950 50  0001 C CNN
	1    9550 1950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0322
U 1 1 5D8EE226
P 9050 2350
F 0 "#PWR0322" H 9050 2100 50  0001 C CNN
F 1 "GND" H 9055 2177 50  0000 C CNN
F 2 "" H 9050 2350 50  0001 C CNN
F 3 "" H 9050 2350 50  0001 C CNN
	1    9050 2350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0323
U 1 1 5D8EE831
P 9550 2350
F 0 "#PWR0323" H 9550 2100 50  0001 C CNN
F 1 "GND" H 9555 2177 50  0000 C CNN
F 2 "" H 9550 2350 50  0001 C CNN
F 3 "" H 9550 2350 50  0001 C CNN
	1    9550 2350
	1    0    0    -1  
$EndComp
Wire Wire Line
	9550 2350 9550 2100
Wire Wire Line
	9050 2350 9050 2100
Text Label 7150 1300 0    50   ~ 0
F+
Text Label 7150 1400 0    50   ~ 0
S+
Text Label 7150 1500 0    50   ~ 0
S-
Text Label 7150 1600 0    50   ~ 0
F-
Wire Wire Line
	2000 1400 1950 1400
Wire Wire Line
	1950 1400 1950 1700
Wire Wire Line
	1950 1700 2950 1700
Text Label 3800 1700 2    50   ~ 0
F-
Wire Wire Line
	3500 1700 3500 1750
Connection ~ 3500 1700
Wire Wire Line
	3500 1700 3800 1700
$Comp
L Device:R R311
U 1 1 5D90BA7B
P 3500 1900
F 0 "R311" H 3570 1946 50  0000 L CNN
F 1 "1k 0.1%" H 3570 1855 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3430 1900 50  0001 C CNN
F 3 "~" H 3500 1900 50  0001 C CNN
	1    3500 1900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0315
U 1 1 5D90C0A7
P 3500 2100
F 0 "#PWR0315" H 3500 1850 50  0001 C CNN
F 1 "GND" H 3505 1927 50  0000 C CNN
F 2 "" H 3500 2100 50  0001 C CNN
F 3 "" H 3500 2100 50  0001 C CNN
	1    3500 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 2100 3500 2050
Wire Wire Line
	2200 1600 2200 2100
$Comp
L power:GND #PWR0313
U 1 1 5D90E0AF
P 2200 2100
F 0 "#PWR0313" H 2200 1850 50  0001 C CNN
F 1 "GND" H 2205 1927 50  0000 C CNN
F 2 "" H 2200 2100 50  0001 C CNN
F 3 "" H 2200 2100 50  0001 C CNN
	1    2200 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2200 1000 2200 850 
Wire Wire Line
	2200 850  2400 850 
Connection ~ 2200 850 
Wire Wire Line
	2200 850  2200 750 
$Comp
L Device:C C306
U 1 1 5D910C4E
P 2550 850
F 0 "C306" V 2298 850 50  0000 C CNN
F 1 "100n" V 2389 850 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2588 700 50  0001 C CNN
F 3 "~" H 2550 850 50  0001 C CNN
	1    2550 850 
	0    1    1    0   
$EndComp
Wire Wire Line
	2700 850  2850 850 
Wire Wire Line
	2850 850  2850 900 
$Comp
L power:GND #PWR0314
U 1 1 5D912645
P 2850 900
F 0 "#PWR0314" H 2850 650 50  0001 C CNN
F 1 "GND" H 2855 727 50  0000 C CNN
F 2 "" H 2850 900 50  0001 C CNN
F 3 "" H 2850 900 50  0001 C CNN
	1    2850 900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	2600 1300 2950 1300
Text Label 3800 1300 2    50   ~ 0
F+
$Comp
L Device:C C309
U 1 1 5D918057
P 2950 1500
F 0 "C309" H 3065 1546 50  0000 L CNN
F 1 "1n" H 3065 1455 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2988 1350 50  0001 C CNN
F 3 "~" H 2950 1500 50  0001 C CNN
	1    2950 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 1650 2950 1700
Connection ~ 2950 1700
Wire Wire Line
	2950 1700 3500 1700
Wire Wire Line
	2950 1350 2950 1300
Connection ~ 2950 1300
Wire Wire Line
	2950 1300 3800 1300
$Comp
L Reference_Voltage:TL431PK U301
U 1 1 5D927A1A
P 750 1550
F 0 "U301" V 796 1480 50  0000 R CNN
F 1 "TL431PK" V 705 1480 50  0000 R CNN
F 2 "Package_TO_SOT_SMD:SOT-89-3" H 750 1400 50  0001 C CIN
F 3 "http://www.ti.com/lit/ds/symlink/tl431.pdf" H 750 1550 50  0001 C CIN
	1    750  1550
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R301
U 1 1 5D929598
P 750 900
F 0 "R301" H 820 946 50  0000 L CNN
F 1 "680" H 820 855 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 680 900 50  0001 C CNN
F 3 "~" H 750 900 50  0001 C CNN
	1    750  900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	650  1550 600  1550
Wire Wire Line
	550  1550 550  1300
Wire Wire Line
	550  1300 750  1300
Connection ~ 750  1300
Wire Wire Line
	750  1300 750  1450
Wire Wire Line
	750  1650 750  1800
$Comp
L power:GND #PWR0302
U 1 1 5D92E1A1
P 750 2100
F 0 "#PWR0302" H 750 1850 50  0001 C CNN
F 1 "GND" H 755 1927 50  0000 C CNN
F 2 "" H 750 2100 50  0001 C CNN
F 3 "" H 750 2100 50  0001 C CNN
	1    750  2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	750  1800 1300 1800
Wire Wire Line
	1300 1800 1300 1650
Connection ~ 750  1800
Wire Wire Line
	750  1800 750  2100
$Comp
L Device:C C301
U 1 1 5D932D1C
P 1300 1500
F 0 "C301" H 1415 1546 50  0000 L CNN
F 1 "1u" H 1415 1455 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1338 1350 50  0001 C CNN
F 3 "~" H 1300 1500 50  0001 C CNN
	1    1300 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 1350 1300 1200
Wire Wire Line
	1300 1200 1600 1200
Wire Wire Line
	750  1050 750  1200
Wire Wire Line
	750  1200 850  1200
Connection ~ 750  1200
Wire Wire Line
	750  1200 750  1300
$Comp
L Device:R R303
U 1 1 5D9371CC
P 1050 1200
F 0 "R303" V 843 1200 50  0000 C CNN
F 1 "24k 0.1%" V 934 1200 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 980 1200 50  0001 C CNN
F 3 "~" H 1050 1200 50  0001 C CNN
	1    1050 1200
	0    1    1    0   
$EndComp
Wire Wire Line
	1200 1200 1300 1200
Connection ~ 1300 1200
Wire Wire Line
	750  700  750  750 
Wire Wire Line
	1600 1200 1600 1350
Connection ~ 1600 1200
Wire Wire Line
	1600 1200 2000 1200
$Comp
L Device:R R306
U 1 1 5D947159
P 1600 1500
F 0 "R306" H 1670 1546 50  0000 L CNN
F 1 "1k 0.1%" H 1670 1455 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 1530 1500 50  0001 C CNN
F 3 "~" H 1600 1500 50  0001 C CNN
	1    1600 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 1650 1600 1800
Wire Wire Line
	1600 1800 1300 1800
Connection ~ 1300 1800
Wire Wire Line
	7150 1600 10000 1600
Wire Wire Line
	7150 1500 9550 1500
Wire Wire Line
	7150 1400 9050 1400
Wire Wire Line
	7150 1300 10000 1300
Wire Wire Line
	850  1200 850  800 
Wire Wire Line
	850  800  1000 800 
Connection ~ 850  1200
Wire Wire Line
	850  1200 900  1200
$Comp
L Device:R R305
U 1 1 5D9B187D
P 1150 800
F 0 "R305" V 943 800 50  0000 C CNN
F 1 "1" V 1034 800 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 1080 800 50  0001 C CNN
F 3 "~" H 1150 800 50  0001 C CNN
	1    1150 800 
	0    1    1    0   
$EndComp
Text Label 1550 800  2    50   ~ 0
VREF
$Comp
L Device:C C304
U 1 1 5D9BF43F
P 1700 800
F 0 "C304" V 1448 800 50  0000 C CNN
F 1 "1u" V 1539 800 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1738 650 50  0001 C CNN
F 3 "~" H 1700 800 50  0001 C CNN
	1    1700 800 
	0    1    1    0   
$EndComp
Wire Wire Line
	1300 800  1550 800 
$Comp
L power:GND #PWR0310
U 1 1 5D9BFEE1
P 1950 850
F 0 "#PWR0310" H 1950 600 50  0001 C CNN
F 1 "GND" H 1955 677 50  0000 C CNN
F 2 "" H 1950 850 50  0001 C CNN
F 3 "" H 1950 850 50  0001 C CNN
	1    1950 850 
	1    0    0    -1  
$EndComp
Wire Wire Line
	1950 850  1950 800 
Wire Wire Line
	1950 800  1850 800 
Wire Wire Line
	9150 1050 10000 1050
Text HLabel 10000 1050 2    50   Output ~ 0
VREF
Text Label 9150 1050 0    50   ~ 0
VREF
$Comp
L Amplifier_Operational:MCP6401UT-xOT U303
U 1 1 5D9DBE19
P 1550 5000
F 0 "U303" H 1450 5000 50  0000 L CNN
F 1 "MCP6V31U" H 1550 4800 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5_HandSoldering" H 1550 5000 50  0001 L CNN
F 3 "http://ww1.microchip.com/downloads/en/devicedoc/22229d.pdf" H 1550 5000 50  0001 C CNN
	1    1550 5000
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:MCP6401UT-xOT U302
U 1 1 5D9DD3CC
P 1450 3100
F 0 "U302" H 1350 3100 50  0000 L CNN
F 1 "MCP6V31U" H 1450 2900 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5_HandSoldering" H 1450 3100 50  0001 L CNN
F 3 "http://ww1.microchip.com/downloads/en/devicedoc/22229d.pdf" H 1450 3100 50  0001 C CNN
	1    1450 3100
	1    0    0    -1  
$EndComp
Wire Wire Line
	1450 4600 1450 4650
Wire Wire Line
	1350 2700 1350 2750
Wire Wire Line
	1350 2750 1500 2750
Connection ~ 1350 2750
Wire Wire Line
	1350 2750 1350 2800
$Comp
L Device:C C303
U 1 1 5DA18039
P 1650 2750
F 0 "C303" V 1398 2750 50  0000 C CNN
F 1 "100n" V 1489 2750 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1688 2600 50  0001 C CNN
F 3 "~" H 1650 2750 50  0001 C CNN
	1    1650 2750
	0    1    1    0   
$EndComp
Wire Wire Line
	1800 2750 1950 2750
Wire Wire Line
	1950 2750 1950 2800
$Comp
L power:GND #PWR0311
U 1 1 5DA1996E
P 1950 2800
F 0 "#PWR0311" H 1950 2550 50  0001 C CNN
F 1 "GND" H 1955 2627 50  0000 C CNN
F 2 "" H 1950 2800 50  0001 C CNN
F 3 "" H 1950 2800 50  0001 C CNN
	1    1950 2800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1750 4650 1900 4650
Wire Wire Line
	1900 4650 1900 4700
$Comp
L power:GND #PWR0309
U 1 1 5DA2090B
P 1900 4700
F 0 "#PWR0309" H 1900 4450 50  0001 C CNN
F 1 "GND" H 1905 4527 50  0000 C CNN
F 2 "" H 1900 4700 50  0001 C CNN
F 3 "" H 1900 4700 50  0001 C CNN
	1    1900 4700
	1    0    0    -1  
$EndComp
$Comp
L Device:C C302
U 1 1 5DA25033
P 1600 4650
F 0 "C302" V 1348 4650 50  0000 C CNN
F 1 "100n" V 1439 4650 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1638 4500 50  0001 C CNN
F 3 "~" H 1600 4650 50  0001 C CNN
	1    1600 4650
	0    1    1    0   
$EndComp
Connection ~ 1450 4650
Wire Wire Line
	1450 4650 1450 4700
$Comp
L power:GND #PWR0306
U 1 1 5DA2B4A7
P 1350 3500
F 0 "#PWR0306" H 1350 3250 50  0001 C CNN
F 1 "GND" H 1355 3327 50  0000 C CNN
F 2 "" H 1350 3500 50  0001 C CNN
F 3 "" H 1350 3500 50  0001 C CNN
	1    1350 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	1350 3500 1350 3400
$Comp
L power:GND #PWR0308
U 1 1 5DA2DEE1
P 1450 5400
F 0 "#PWR0308" H 1450 5150 50  0001 C CNN
F 1 "GND" H 1455 5227 50  0000 C CNN
F 2 "" H 1450 5400 50  0001 C CNN
F 3 "" H 1450 5400 50  0001 C CNN
	1    1450 5400
	1    0    0    -1  
$EndComp
Wire Wire Line
	1450 5400 1450 5300
Wire Wire Line
	1250 5100 1100 5100
Wire Wire Line
	1100 5100 1100 5700
Wire Wire Line
	1100 5700 2050 5700
Wire Wire Line
	2050 5700 2050 5550
Wire Wire Line
	2050 5000 1850 5000
Connection ~ 2050 5000
$Comp
L Device:R R307
U 1 1 5DA3575A
P 2050 5400
F 0 "R307" H 2120 5446 50  0000 L CNN
F 1 "1k 0.1%" H 2120 5355 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 1980 5400 50  0001 C CNN
F 3 "~" H 2050 5400 50  0001 C CNN
	1    2050 5400
	1    0    0    -1  
$EndComp
Wire Wire Line
	2050 5250 2050 5000
$Comp
L Device:R R304
U 1 1 5DA36B3C
P 1100 5850
F 0 "R304" H 1170 5896 50  0000 L CNN
F 1 "1k 0.1%" H 1170 5805 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 1030 5850 50  0001 C CNN
F 3 "~" H 1100 5850 50  0001 C CNN
	1    1100 5850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0304
U 1 1 5DA37E5D
P 1100 6050
F 0 "#PWR0304" H 1100 5800 50  0001 C CNN
F 1 "GND" H 1105 5877 50  0000 C CNN
F 2 "" H 1100 6050 50  0001 C CNN
F 3 "" H 1100 6050 50  0001 C CNN
	1    1100 6050
	1    0    0    -1  
$EndComp
Wire Wire Line
	1100 6050 1100 6000
Wire Wire Line
	1150 3200 1000 3200
Wire Wire Line
	1000 3200 1000 3700
Wire Wire Line
	1750 3100 2100 3100
Wire Wire Line
	1000 3700 2100 3700
$Comp
L Device:R R308
U 1 1 5DA44B1B
P 2500 3250
F 0 "R308" H 2570 3296 50  0000 L CNN
F 1 "1k 0.1%" H 2570 3205 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2430 3250 50  0001 C CNN
F 3 "~" H 2500 3250 50  0001 C CNN
	1    2500 3250
	1    0    0    -1  
$EndComp
Connection ~ 2500 3100
Wire Wire Line
	2500 3400 2500 3700
$Comp
L Device:R R302
U 1 1 5DA48A16
P 1000 3850
F 0 "R302" H 1070 3896 50  0000 L CNN
F 1 "1k 0.1%" H 1070 3805 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 930 3850 50  0001 C CNN
F 3 "~" H 1000 3850 50  0001 C CNN
	1    1000 3850
	1    0    0    -1  
$EndComp
Connection ~ 1000 3700
Wire Wire Line
	1000 4000 1000 4150
$Comp
L power:GND #PWR0303
U 1 1 5DA4B09C
P 1000 4150
F 0 "#PWR0303" H 1000 3900 50  0001 C CNN
F 1 "GND" H 1005 3977 50  0000 C CNN
F 2 "" H 1000 4150 50  0001 C CNN
F 3 "" H 1000 4150 50  0001 C CNN
	1    1000 4150
	1    0    0    -1  
$EndComp
Connection ~ 1100 5700
Wire Wire Line
	650  3000 1150 3000
Text Label 650  3000 0    50   ~ 0
S+
Text Label 650  4900 0    50   ~ 0
S-
Wire Wire Line
	650  4900 1250 4900
$Comp
L Amplifier_Operational:MCP6401UT-xOT U305
U 1 1 5DA962C5
P 4200 4150
F 0 "U305" H 4100 4150 50  0000 L CNN
F 1 "MCP6V31U" H 4200 3950 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5_HandSoldering" H 4200 4150 50  0001 L CNN
F 3 "http://ww1.microchip.com/downloads/en/devicedoc/22229d.pdf" H 4200 4150 50  0001 C CNN
	1    4200 4150
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 4050 3200 4050
Wire Wire Line
	2500 3100 2950 3100
$Comp
L Device:R R309
U 1 1 5DA9D496
P 3350 4050
F 0 "R309" V 3143 4050 50  0000 C CNN
F 1 "1k 0.1%" V 3234 4050 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3280 4050 50  0001 C CNN
F 3 "~" H 3350 4050 50  0001 C CNN
	1    3350 4050
	0    1    1    0   
$EndComp
$Comp
L Device:R R310
U 1 1 5DA9E6D1
P 3350 4250
F 0 "R310" V 3150 4250 50  0000 C CNN
F 1 "1k 0.1%" V 3250 4250 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3280 4250 50  0001 C CNN
F 3 "~" H 3350 4250 50  0001 C CNN
	1    3350 4250
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3500 4250 3850 4250
Wire Wire Line
	3500 4050 3650 4050
Wire Wire Line
	3200 4250 2950 4250
Wire Wire Line
	2050 5000 2600 5000
Wire Wire Line
	4100 4450 4100 4600
$Comp
L power:GND #PWR0318
U 1 1 5DAAB833
P 4100 4600
F 0 "#PWR0318" H 4100 4350 50  0001 C CNN
F 1 "GND" H 4105 4427 50  0000 C CNN
F 2 "" H 4100 4600 50  0001 C CNN
F 3 "" H 4100 4600 50  0001 C CNN
	1    4100 4600
	1    0    0    -1  
$EndComp
$Comp
L Device:C C310
U 1 1 5DAACDB3
P 4350 3700
F 0 "C310" V 4098 3700 50  0000 C CNN
F 1 "100n" V 4189 3700 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 4388 3550 50  0001 C CNN
F 3 "~" H 4350 3700 50  0001 C CNN
	1    4350 3700
	0    1    1    0   
$EndComp
Wire Wire Line
	4200 3700 4100 3700
Wire Wire Line
	4100 3700 4100 3850
Wire Wire Line
	4100 3700 4100 3400
Connection ~ 4100 3700
Wire Wire Line
	3850 4250 3850 4900
Wire Wire Line
	3850 4900 4350 4900
Connection ~ 3850 4250
Wire Wire Line
	3850 4250 3900 4250
$Comp
L Device:R R313
U 1 1 5DAB7CDB
P 4500 4900
F 0 "R313" V 4293 4900 50  0000 C CNN
F 1 "5k 0.1%" V 4384 4900 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4430 4900 50  0001 C CNN
F 3 "~" H 4500 4900 50  0001 C CNN
	1    4500 4900
	0    1    1    0   
$EndComp
$Comp
L Device:R R312
U 1 1 5DAB812D
P 3650 4650
F 0 "R312" H 3400 4650 50  0000 L CNN
F 1 "5k 0.1%" H 3300 4550 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3580 4650 50  0001 C CNN
F 3 "~" H 3650 4650 50  0001 C CNN
	1    3650 4650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 4500 3650 4050
Connection ~ 3650 4050
Wire Wire Line
	3650 4050 3900 4050
Wire Wire Line
	3650 4800 3650 5000
$Comp
L power:GND #PWR0316
U 1 1 5DAC7285
P 3650 5000
F 0 "#PWR0316" H 3650 4750 50  0001 C CNN
F 1 "GND" H 3655 4827 50  0000 C CNN
F 2 "" H 3650 5000 50  0001 C CNN
F 3 "" H 3650 5000 50  0001 C CNN
	1    3650 5000
	1    0    0    -1  
$EndComp
Wire Wire Line
	4650 4900 4800 4900
Wire Wire Line
	4800 4900 4800 4150
Connection ~ 4800 4150
$Comp
L Device:C C305
U 1 1 5DAD0039
P 2100 3250
F 0 "C305" H 1985 3204 50  0000 R CNN
F 1 "100n" H 1985 3295 50  0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2138 3100 50  0001 C CNN
F 3 "~" H 2100 3250 50  0001 C CNN
	1    2100 3250
	-1   0    0    1   
$EndComp
Connection ~ 2100 3100
Wire Wire Line
	2100 3100 2500 3100
Wire Wire Line
	2100 3400 2100 3700
Connection ~ 2100 3700
Wire Wire Line
	2100 3700 2500 3700
$Comp
L Device:C C308
U 1 1 5DAD3E9D
P 2600 5400
F 0 "C308" H 2485 5354 50  0000 R CNN
F 1 "100n" H 2485 5445 50  0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2638 5250 50  0001 C CNN
F 3 "~" H 2600 5400 50  0001 C CNN
	1    2600 5400
	-1   0    0    1   
$EndComp
Wire Wire Line
	2600 5550 2600 5700
Wire Wire Line
	2600 5700 2050 5700
Connection ~ 2050 5700
Connection ~ 2600 5000
Wire Wire Line
	2600 5000 2950 5000
Wire Wire Line
	2600 5000 2600 5250
Wire Wire Line
	5400 4150 5400 3900
$Comp
L power:+3V3 #PWR0320
U 1 1 5DB05D58
P 5400 3550
F 0 "#PWR0320" H 5400 3400 50  0001 C CNN
F 1 "+3V3" H 5415 3723 50  0000 C CNN
F 2 "" H 5400 3550 50  0001 C CNN
F 3 "" H 5400 3550 50  0001 C CNN
	1    5400 3550
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4448W D301
U 1 1 5DB075CB
P 5400 3750
F 0 "D301" V 5354 3830 50  0000 L CNN
F 1 "1N4448W" V 5445 3830 50  0000 L CNN
F 2 "Diode_SMD:D_SOD-123" H 5400 3575 50  0001 C CNN
F 3 "https://www.vishay.com/docs/85722/1n4448w.pdf" H 5400 3750 50  0001 C CNN
	1    5400 3750
	0    1    1    0   
$EndComp
Wire Wire Line
	5400 3600 5400 3550
$Comp
L Device:R R314
U 1 1 5DB0C2DA
P 5200 4150
F 0 "R314" V 4993 4150 50  0000 C CNN
F 1 "100" V 5084 4150 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5130 4150 50  0001 C CNN
F 3 "~" H 5200 4150 50  0001 C CNN
	1    5200 4150
	0    1    1    0   
$EndComp
Wire Wire Line
	4500 3700 4550 3700
Wire Wire Line
	4550 3700 4550 3800
$Comp
L power:GND #PWR0319
U 1 1 5DB1BE7A
P 4550 3800
F 0 "#PWR0319" H 4550 3550 50  0001 C CNN
F 1 "GND" H 4555 3627 50  0000 C CNN
F 2 "" H 4550 3800 50  0001 C CNN
F 3 "" H 4550 3800 50  0001 C CNN
	1    4550 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 4150 5050 4150
Text HLabel 6050 4150 2    50   Output ~ 0
TEMP_OUT
Wire Wire Line
	5350 4150 5400 4150
Connection ~ 5400 4150
Wire Wire Line
	5400 4150 6050 4150
Wire Wire Line
	4500 4150 4800 4150
$Comp
L power:+5VA #PWR0301
U 1 1 5D89CDE5
P 750 700
F 0 "#PWR0301" H 750 550 50  0001 C CNN
F 1 "+5VA" H 765 873 50  0000 C CNN
F 2 "" H 750 700 50  0001 C CNN
F 3 "" H 750 700 50  0001 C CNN
	1    750  700 
	1    0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0312
U 1 1 5D89F047
P 2200 750
F 0 "#PWR0312" H 2200 600 50  0001 C CNN
F 1 "+5VA" H 2215 923 50  0000 C CNN
F 2 "" H 2200 750 50  0001 C CNN
F 3 "" H 2200 750 50  0001 C CNN
	1    2200 750 
	1    0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0305
U 1 1 5D8A308A
P 1350 2700
F 0 "#PWR0305" H 1350 2550 50  0001 C CNN
F 1 "+5VA" H 1365 2873 50  0000 C CNN
F 2 "" H 1350 2700 50  0001 C CNN
F 3 "" H 1350 2700 50  0001 C CNN
	1    1350 2700
	1    0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0317
U 1 1 5D8A44C1
P 4100 3400
F 0 "#PWR0317" H 4100 3250 50  0001 C CNN
F 1 "+5VA" H 4115 3573 50  0000 C CNN
F 2 "" H 4100 3400 50  0001 C CNN
F 3 "" H 4100 3400 50  0001 C CNN
	1    4100 3400
	1    0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0307
U 1 1 5D8A6EA1
P 1450 4600
F 0 "#PWR0307" H 1450 4450 50  0001 C CNN
F 1 "+5VA" H 1465 4773 50  0000 C CNN
F 2 "" H 1450 4600 50  0001 C CNN
F 3 "" H 1450 4600 50  0001 C CNN
	1    1450 4600
	1    0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0325
U 1 1 5D8B0C95
P 10150 3650
F 0 "#PWR0325" H 10150 3500 50  0001 C CNN
F 1 "+5VA" H 10165 3823 50  0000 C CNN
F 2 "" H 10150 3650 50  0001 C CNN
F 3 "" H 10150 3650 50  0001 C CNN
	1    10150 3650
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0321
U 1 1 5D8B40C4
P 8900 3650
F 0 "#PWR0321" H 8900 3500 50  0001 C CNN
F 1 "+5V" H 8915 3823 50  0000 C CNN
F 2 "" H 8900 3650 50  0001 C CNN
F 3 "" H 8900 3650 50  0001 C CNN
	1    8900 3650
	1    0    0    -1  
$EndComp
$Comp
L Device:L_Small L301
U 1 1 5D8B5422
P 9400 3700
F 0 "L301" V 9585 3700 50  0000 C CNN
F 1 "1u" V 9494 3700 50  0000 C CNN
F 2 "Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 9400 3700 50  0001 C CNN
F 3 "~" H 9400 3700 50  0001 C CNN
	1    9400 3700
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R315
U 1 1 5D8D4A65
P 9800 3700
F 0 "R315" V 9593 3700 50  0000 C CNN
F 1 "10" V 9684 3700 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 9730 3700 50  0001 C CNN
F 3 "~" H 9800 3700 50  0001 C CNN
	1    9800 3700
	0    1    1    0   
$EndComp
Wire Wire Line
	8900 3650 8900 3700
Wire Wire Line
	8900 3700 9300 3700
Wire Wire Line
	9500 3700 9650 3700
Wire Wire Line
	10150 3700 10150 3650
Wire Wire Line
	9950 3700 10000 3700
$Comp
L Device:C C313
U 1 1 5D8F201B
P 10000 3950
F 0 "C313" H 10115 3996 50  0000 L CNN
F 1 "10u" H 10115 3905 50  0000 L CNN
F 2 "Capacitor_SMD:C_1210_3225Metric" H 10038 3800 50  0001 C CNN
F 3 "~" H 10000 3950 50  0001 C CNN
	1    10000 3950
	1    0    0    -1  
$EndComp
Wire Wire Line
	10000 3800 10000 3700
Connection ~ 10000 3700
Wire Wire Line
	10000 3700 10150 3700
Wire Wire Line
	10000 4100 10000 4200
$Comp
L power:GND #PWR0324
U 1 1 5D903DD6
P 10000 4200
F 0 "#PWR0324" H 10000 3950 50  0001 C CNN
F 1 "GND" H 10005 4027 50  0000 C CNN
F 2 "" H 10000 4200 50  0001 C CNN
F 3 "" H 10000 4200 50  0001 C CNN
	1    10000 4200
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 3100 2950 4050
Wire Wire Line
	2950 4250 2950 5000
$Comp
L Device:C C307
U 1 1 5E051281
P 600 1950
F 0 "C307" H 715 1996 50  0000 L CNN
F 1 "10u" H 715 1905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 638 1800 50  0001 C CNN
F 3 "~" H 600 1950 50  0001 C CNN
	1    600  1950
	1    0    0    -1  
$EndComp
Wire Wire Line
	600  2100 750  2100
Connection ~ 750  2100
Wire Wire Line
	600  1800 600  1550
Connection ~ 600  1550
Wire Wire Line
	600  1550 550  1550
$Comp
L Sensor_Temperature:DS18B20 U306
U 1 1 5E08DC55
P 5350 6850
F 0 "U306" H 5120 6896 50  0000 R CNN
F 1 "DS18B20" H 5120 6805 50  0000 R CNN
F 2 "Package_TO_SOT_THT:TO-92_Inline" H 4350 6600 50  0001 C CNN
F 3 "http://datasheets.maximintegrated.com/en/ds/DS18B20.pdf" H 5200 7100 50  0001 C CNN
	1    5350 6850
	-1   0    0    -1  
$EndComp
$Comp
L Device:C C314
U 1 1 5E096137
P 6050 6850
F 0 "C314" V 5798 6850 50  0000 C CNN
F 1 "100n" V 5889 6850 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6088 6700 50  0001 C CNN
F 3 "~" H 6050 6850 50  0001 C CNN
	1    6050 6850
	-1   0    0    1   
$EndComp
Wire Wire Line
	6050 7000 6050 7250
Wire Wire Line
	6050 7250 5350 7250
Wire Wire Line
	5350 7250 5350 7150
Wire Wire Line
	5350 7250 5350 7350
Connection ~ 5350 7250
Wire Wire Line
	6050 6700 6050 6400
Wire Wire Line
	6050 6400 5350 6400
Wire Wire Line
	5350 6400 5350 6550
Wire Wire Line
	5350 6400 5350 6300
Connection ~ 5350 6400
$Comp
L power:+3V3 #PWR0130
U 1 1 5E0AC49E
P 5350 6200
F 0 "#PWR0130" H 5350 6050 50  0001 C CNN
F 1 "+3V3" H 5365 6373 50  0000 C CNN
F 2 "" H 5350 6200 50  0001 C CNN
F 3 "" H 5350 6200 50  0001 C CNN
	1    5350 6200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0131
U 1 1 5E0AE6F5
P 5350 7350
F 0 "#PWR0131" H 5350 7100 50  0001 C CNN
F 1 "GND" H 5355 7177 50  0000 C CNN
F 2 "" H 5350 7350 50  0001 C CNN
F 3 "" H 5350 7350 50  0001 C CNN
	1    5350 7350
	1    0    0    -1  
$EndComp
Wire Wire Line
	5050 6850 4700 6850
$Comp
L Device:R R316
U 1 1 5E0B45CD
P 4700 6600
F 0 "R316" H 4770 6646 50  0000 L CNN
F 1 "4k7" H 4770 6555 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4630 6600 50  0001 C CNN
F 3 "~" H 4700 6600 50  0001 C CNN
	1    4700 6600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4700 6750 4700 6850
Connection ~ 4700 6850
Wire Wire Line
	4700 6850 4600 6850
Wire Wire Line
	4700 6450 4700 6300
Wire Wire Line
	4700 6300 5350 6300
Connection ~ 5350 6300
Wire Wire Line
	5350 6300 5350 6200
Text HLabel 4600 6850 0    50   BiDi ~ 0
FRONTEND_TEMP
Wire Notes Line
	6500 5750 6500 7700
Wire Notes Line
	6500 7700 3800 7700
Wire Notes Line
	3800 7700 3800 5750
Wire Notes Line
	3800 5750 6500 5750
Text Notes 3850 6000 0    50   ~ 0
Optional. Presence is detected in SW\nPopulate this circuitry, if a temperature compensation\nof the frontend is wanted
Wire Notes Line
	3150 3800 3150 4550
Wire Notes Line
	3150 4550 3500 4550
Wire Notes Line
	3500 4550 3500 3800
Wire Notes Line
	3500 3800 3150 3800
Wire Notes Line
	4300 5000 4700 5000
Wire Notes Line
	4700 5000 4700 4600
Wire Notes Line
	4700 4600 4300 4600
Wire Notes Line
	4300 4600 4300 5000
Wire Notes Line
	1950 5250 2400 5250
Wire Notes Line
	2400 5250 2400 5550
Wire Notes Line
	2400 5550 1950 5550
Wire Notes Line
	1950 5250 1950 5550
Wire Notes Line
	950  5650 950  6000
Wire Notes Line
	950  6000 1500 6000
Wire Notes Line
	1500 6000 1500 5650
Wire Notes Line
	950  5650 1500 5650
Wire Notes Line
	900  3650 900  4050
Wire Notes Line
	900  4050 1400 4050
Wire Notes Line
	1400 4050 1400 3650
Wire Notes Line
	900  3650 1400 3650
Wire Notes Line
	2400 3000 2400 3400
Wire Notes Line
	2400 3400 2900 3400
Wire Notes Line
	2900 3400 2900 3000
Wire Notes Line
	2900 3000 2400 3000
Wire Notes Line
	3300 4600 3300 4800
Wire Notes Line
	3300 4800 3750 4800
Wire Notes Line
	3750 4800 3750 4500
Wire Notes Line
	3750 4500 3550 4500
Wire Notes Line
	3550 4500 3550 4600
Wire Notes Line
	3550 4600 3300 4600
Text Notes 4300 650  0    100  ~ 20
Use low drift types for the marked resistors
Wire Notes Line
	3350 1650 3350 2100
Wire Notes Line
	3350 2100 4000 2100
Wire Notes Line
	4000 2100 4000 1650
Wire Notes Line
	4000 1650 3350 1650
Wire Notes Line
	1450 1350 2000 1350
Wire Notes Line
	2000 1350 2000 1700
Wire Notes Line
	2000 1700 1450 1700
Wire Notes Line
	1450 1700 1450 1350
Wire Notes Line
	850  900  850  1300
Wire Notes Line
	850  1300 1200 1300
Wire Notes Line
	1200 1300 1200 950 
Wire Notes Line
	1200 950  850  950 
Text Notes 6950 4400 0    50   ~ 0
High performance ADC (optional)
Wire Wire Line
	9700 5150 9700 5250
$Comp
L Device:C C211
U 1 1 5E0AB55E
P 9700 5400
F 0 "C211" H 9815 5446 50  0000 L CNN
F 1 "1u" H 9815 5355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 9738 5250 50  0001 C CNN
F 3 "~" H 9700 5400 50  0001 C CNN
	1    9700 5400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C212
U 1 1 5E0AC008
P 10050 5400
F 0 "C212" H 10165 5446 50  0000 L CNN
F 1 "100n" H 10165 5355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 10088 5250 50  0001 C CNN
F 3 "~" H 10050 5400 50  0001 C CNN
	1    10050 5400
	1    0    0    -1  
$EndComp
Wire Wire Line
	9700 5150 10050 5150
Wire Wire Line
	10050 5150 10050 5250
Connection ~ 9700 5150
Wire Wire Line
	10050 5550 10050 5600
Wire Wire Line
	9700 5600 9700 5550
Wire Wire Line
	9700 5600 9700 5650
Connection ~ 9700 5600
$Comp
L power:GND #PWR0134
U 1 1 5E0BF770
P 9700 5650
F 0 "#PWR0134" H 9700 5400 50  0001 C CNN
F 1 "GND" H 9705 5477 50  0000 C CNN
F 2 "" H 9700 5650 50  0001 C CNN
F 3 "" H 9700 5650 50  0001 C CNN
	1    9700 5650
	1    0    0    -1  
$EndComp
$Comp
L Analog_ADC:MCP3551-EMS U201
U 1 1 5E0C26AA
P 8600 5650
F 0 "U201" H 8600 6139 50  0000 C CNN
F 1 "MCP3551-EMS" H 8600 6230 50  0000 C CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 8600 5650 50  0001 C CIN
F 3 "http://ww1.microchip.com/downloads/en/devicedoc/21950c.pdf" H 8600 5650 50  0001 C CNN
	1    8600 5650
	-1   0    0    1   
$EndComp
Wire Wire Line
	9550 5750 9100 5750
Wire Wire Line
	9100 5550 9300 5550
Wire Wire Line
	9500 5550 9500 5600
Wire Wire Line
	9500 5600 9700 5600
Wire Wire Line
	8500 6050 10100 6050
Wire Wire Line
	10600 6050 10600 5150
Wire Wire Line
	10600 5150 10050 5150
Connection ~ 10050 5150
Text Label 8700 5000 0    50   ~ 0
VREF
Wire Wire Line
	8500 5250 8500 5100
Wire Wire Line
	8500 5100 8350 5100
Wire Wire Line
	8350 5100 8350 5200
$Comp
L power:GND #PWR0135
U 1 1 5E110225
P 8350 5200
F 0 "#PWR0135" H 8350 4950 50  0001 C CNN
F 1 "GND" H 8355 5027 50  0000 C CNN
F 2 "" H 8350 5200 50  0001 C CNN
F 3 "" H 8350 5200 50  0001 C CNN
	1    8350 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	8100 5550 7900 5550
Text HLabel 7750 5550 0    50   Input ~ 0
ADC_CS
Text HLabel 7800 5650 0    50   Input ~ 0
ADC_SDO
Text HLabel 7800 5750 0    50   Input ~ 0
ADC_SCK
Wire Wire Line
	7800 5750 8100 5750
Wire Wire Line
	8100 5650 7800 5650
Wire Wire Line
	7900 5550 7900 5450
Connection ~ 7900 5550
Wire Wire Line
	7900 5550 7750 5550
$Comp
L Device:R R201
U 1 1 5E14363F
P 7900 5300
F 0 "R201" H 7970 5346 50  0000 L CNN
F 1 "10k" H 7970 5255 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 7830 5300 50  0001 C CNN
F 3 "~" H 7900 5300 50  0001 C CNN
	1    7900 5300
	1    0    0    -1  
$EndComp
Text Label 10250 5150 0    50   ~ 0
ADC_VDD
Text Label 7500 5100 0    50   ~ 0
ADC_VDD
Wire Wire Line
	7500 5100 7900 5100
Wire Wire Line
	7900 5100 7900 5150
$Comp
L Regulator_Linear:AP1117-33 U204
U 1 1 5E20AB26
P 9300 5150
F 0 "U204" H 9300 5392 50  0000 C CNN
F 1 "AP1117-33" H 9300 5301 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-223-3_TabPin2" H 9300 5350 50  0001 C CNN
F 3 "http://www.diodes.com/datasheets/AP1117.pdf" H 9400 4900 50  0001 C CNN
	1    9300 5150
	1    0    0    -1  
$EndComp
Wire Wire Line
	9600 5150 9700 5150
Wire Wire Line
	9300 5450 9300 5550
Connection ~ 9300 5550
Wire Wire Line
	9300 5550 9500 5550
Wire Wire Line
	9000 5150 8950 5150
Wire Wire Line
	8950 5150 8950 4750
$Comp
L power:+5VA #PWR0133
U 1 1 5E22FC84
P 8950 4750
F 0 "#PWR0133" H 8950 4600 50  0001 C CNN
F 1 "+5VA" H 8965 4923 50  0000 C CNN
F 2 "" H 8950 4750 50  0001 C CNN
F 3 "" H 8950 4750 50  0001 C CNN
	1    8950 4750
	1    0    0    -1  
$EndComp
Text Label 4600 4150 0    50   ~ 0
ADC_TEMP
Text Label 9550 5750 2    50   ~ 0
ADC_TEMP
$Comp
L Device:R R203
U 1 1 5E26BBD2
P 10100 5900
F 0 "R203" H 10170 5946 50  0000 L CNN
F 1 "R_LOAD" H 10170 5855 50  0000 L CNN
F 2 "Resistor_SMD:R_1206_3216Metric" V 10030 5900 50  0001 C CNN
F 3 "~" H 10100 5900 50  0001 C CNN
	1    10100 5900
	1    0    0    -1  
$EndComp
Connection ~ 10100 6050
Wire Wire Line
	10100 6050 10600 6050
Wire Wire Line
	10100 5750 10100 5600
Wire Wire Line
	9700 5600 10050 5600
Connection ~ 10050 5600
Wire Wire Line
	10050 5600 10100 5600
Wire Notes Line
	6950 4500 6950 6550
Wire Notes Line
	6950 4500 11200 4500
Wire Wire Line
	8700 4700 8400 4700
Wire Wire Line
	8700 4700 8700 5250
$Comp
L Device:C C?
U 1 1 5E36C216
P 8250 4700
F 0 "C?" V 8502 4700 50  0000 C CNN
F 1 "100n" V 8411 4700 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 8288 4550 50  0001 C CNN
F 3 "~" H 8250 4700 50  0001 C CNN
	1    8250 4700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	8100 4700 8000 4700
Wire Wire Line
	8000 4700 8000 5100
Wire Wire Line
	8000 5100 8350 5100
Connection ~ 8350 5100
$EndSCHEMATC