EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 3 3 Title "Reflow Oven Controller" Date "2019-09-02" Rev "v1.0" Comp "Shimatta" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr 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 Connection ~ 9050 1400 Connection ~ 9550 1500 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 4550 1450 4500 1450 Wire Wire Line 4500 1450 4500 1750 Wire Wire Line 4500 1750 5150 1750 Text Label 6350 1750 2 50 ~ 0 F- Wire Wire Line 6050 1750 6050 1800 Connection ~ 6050 1750 Wire Wire Line 6050 1750 6350 1750 $Comp L Device:R R316 U 1 1 5D90BA7B P 6050 1950 F 0 "R316" H 6120 1996 50 0000 L CNN F 1 "1k 0.1%" H 6120 1905 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 5980 1950 50 0001 C CNN F 3 "~" H 6050 1950 50 0001 C CNN 1 6050 1950 1 0 0 -1 $EndComp $Comp L power:GND #PWR0322 U 1 1 5D90C0A7 P 6050 2150 F 0 "#PWR0322" H 6050 1900 50 0001 C CNN F 1 "GND" H 6055 1977 50 0000 C CNN F 2 "" H 6050 2150 50 0001 C CNN F 3 "" H 6050 2150 50 0001 C CNN 1 6050 2150 1 0 0 -1 $EndComp Wire Wire Line 6050 2150 6050 2100 Wire Wire Line 9150 4750 9150 4600 Wire Wire Line 9150 4600 9350 4600 Connection ~ 9150 4600 Wire Wire Line 9150 4600 9150 4500 $Comp L Device:C C309 U 1 1 5D910C4E P 9500 4600 F 0 "C309" V 9248 4600 50 0000 C CNN F 1 "100n" V 9339 4600 50 0000 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 9538 4450 50 0001 C CNN F 3 "~" H 9500 4600 50 0001 C CNN 1 9500 4600 0 1 1 0 $EndComp Wire Wire Line 9650 4600 9800 4600 Wire Wire Line 9800 4600 9800 4650 $Comp L power:GND #PWR0320 U 1 1 5D912645 P 9800 4650 F 0 "#PWR0320" H 9800 4400 50 0001 C CNN F 1 "GND" H 9805 4477 50 0000 C CNN F 2 "" H 9800 4650 50 0001 C CNN F 3 "" H 9800 4650 50 0001 C CNN 1 9800 4650 1 0 0 -1 $EndComp Text Label 6350 1350 2 50 ~ 0 F+ $Comp L Device:C C311 U 1 1 5D918057 P 5500 1550 F 0 "C311" H 5615 1596 50 0000 L CNN F 1 "22n" H 5615 1505 50 0000 L CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 5538 1400 50 0001 C CNN F 3 "~" H 5500 1550 50 0001 C CNN 1 5500 1550 1 0 0 -1 $EndComp Wire Wire Line 5500 1700 5500 1750 Connection ~ 5500 1750 Wire Wire Line 5500 1750 6050 1750 Wire Wire Line 5500 1400 5500 1350 Connection ~ 5500 1350 Wire Wire Line 5500 1350 6350 1350 $Comp L Device:R R303 U 1 1 5D929598 P 2700 900 F 0 "R303" H 2770 946 50 0000 L CNN F 1 "150" H 2770 855 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 2630 900 50 0001 C CNN F 3 "~" H 2700 900 50 0001 C CNN 1 2700 900 1 0 0 -1 $EndComp Wire Wire Line 2500 1550 2500 1300 Wire Wire Line 2500 1300 2700 1300 Connection ~ 2700 1300 Wire Wire Line 2700 1300 2700 1450 $Comp L power:GND #PWR0310 U 1 1 5D92E1A1 P 2700 2100 F 0 "#PWR0310" H 2700 1850 50 0001 C CNN F 1 "GND" H 2705 1927 50 0000 C CNN F 2 "" H 2700 2100 50 0001 C CNN F 3 "" H 2700 2100 50 0001 C CNN 1 2700 2100 1 0 0 -1 $EndComp Wire Wire Line 3850 1850 3850 1700 $Comp L Device:C C306 U 1 1 5D932D1C P 3850 1550 F 0 "C306" H 3965 1596 50 0000 L CNN F 1 "1u" H 3965 1505 50 0000 L CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 3888 1400 50 0001 C CNN F 3 "~" H 3850 1550 50 0001 C CNN 1 3850 1550 1 0 0 -1 $EndComp Wire Wire Line 3850 1400 3850 1250 Wire Wire Line 3850 1250 4150 1250 $Comp L Device:R R306 U 1 1 5D9371CC P 3600 1250 F 0 "R306" V 3393 1250 50 0000 C CNN F 1 "24k 0.1%" V 3484 1250 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 3530 1250 50 0001 C CNN F 3 "~" H 3600 1250 50 0001 C CNN 1 3600 1250 0 1 1 0 $EndComp Wire Wire Line 3750 1250 3850 1250 Connection ~ 3850 1250 Wire Wire Line 2700 700 2700 750 Wire Wire Line 4150 1250 4150 1400 Connection ~ 4150 1250 Wire Wire Line 4150 1250 4550 1250 $Comp L Device:R R310 U 1 1 5D947159 P 4150 1550 F 0 "R310" H 4220 1596 50 0000 L CNN F 1 "1k 0.1%" H 4220 1505 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4080 1550 50 0001 C CNN F 3 "~" H 4150 1550 50 0001 C CNN 1 4150 1550 1 0 0 -1 $EndComp Wire Wire Line 4150 1700 4150 1850 Wire Wire Line 4150 1850 3850 1850 Wire Wire Line 7150 1600 10000 1600 Wire Wire Line 7150 1500 8050 1500 Wire Wire Line 7150 1400 7650 1400 Wire Wire Line 7150 1300 10000 1300 Wire Wire Line 3400 1250 3400 1200 Wire Wire Line 3400 850 3550 850 Wire Wire Line 3400 1250 3450 1250 $Comp L Device:R R308 U 1 1 5D9B187D P 3700 850 F 0 "R308" V 3493 850 50 0000 C CNN F 1 "0" V 3584 850 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 3630 850 50 0001 C CNN F 3 "~" H 3700 850 50 0001 C CNN 1 3700 850 0 1 1 0 $EndComp Text Label 4100 850 2 50 ~ 0 VREF $Comp L Device:C C307 U 1 1 5D9BF43F P 4250 850 F 0 "C307" V 3998 850 50 0000 C CNN F 1 "1u" V 4089 850 50 0000 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 4288 700 50 0001 C CNN F 3 "~" H 4250 850 50 0001 C CNN 1 4250 850 0 1 1 0 $EndComp Wire Wire Line 3850 850 4100 850 $Comp L power:GND #PWR0313 U 1 1 5D9BFEE1 P 4500 900 F 0 "#PWR0313" H 4500 650 50 0001 C CNN F 1 "GND" H 4505 727 50 0000 C CNN F 2 "" H 4500 900 50 0001 C CNN F 3 "" H 4500 900 50 0001 C CNN 1 4500 900 1 0 0 -1 $EndComp Wire Wire Line 4500 900 4500 850 Wire Wire Line 4500 850 4400 850 Wire Wire Line 9150 1050 10000 1050 Text HLabel 10000 1050 2 50 Output ~ 0 VREF Text Label 9150 1050 0 50 ~ 0 VREF Text Label 750 3500 0 50 ~ 0 S+ Text HLabel 6900 3900 2 50 Output ~ 0 TEMP_OUT $Comp L Device:C C316 U 1 1 5D8F201B P 10350 2750 F 0 "C316" H 10465 2796 50 0000 L CNN F 1 "DNP" H 10465 2705 50 0000 L CNN F 2 "Capacitor_SMD:C_1210_3225Metric" H 10388 2600 50 0001 C CNN F 3 "~" H 10350 2750 50 0001 C CNN 1 10350 2750 1 0 0 -1 $EndComp Wire Wire Line 10350 2600 10350 2500 Wire Wire Line 10350 2900 10350 3000 $Comp L power:GND #PWR0326 U 1 1 5D903DD6 P 10350 3000 F 0 "#PWR0326" H 10350 2750 50 0001 C CNN F 1 "GND" H 10355 2827 50 0000 C CNN F 2 "" H 10350 3000 50 0001 C CNN F 3 "" H 10350 3000 50 0001 C CNN 1 10350 3000 1 0 0 -1 $EndComp $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 C312 U 1 1 5E096137 P 6050 6850 F 0 "C312" 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 #PWR0318 U 1 1 5E0AC49E P 5350 6200 F 0 "#PWR0318" 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 #PWR0319 U 1 1 5E0AE6F5 P 5350 7350 F 0 "#PWR0319" 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 R313 U 1 1 5E0B45CD P 4700 6600 F 0 "R313" 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 3800 7700 3800 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 Text Notes 5450 750 0 100 ~ 20 Use low drift types for the marked resistors Wire Notes Line 5900 1700 5900 2150 Wire Notes Line 5900 2150 6550 2150 Wire Notes Line 6550 2150 6550 1700 Wire Notes Line 6550 1700 5900 1700 Wire Notes Line 4000 1400 4550 1400 Wire Notes Line 4550 1400 4550 1750 Wire Notes Line 4550 1750 4000 1750 Wire Notes Line 4000 1750 4000 1400 Wire Notes Line 3400 950 3400 1350 Wire Notes Line 3400 1350 3750 1350 Wire Notes Line 3750 1350 3750 1000 Wire Notes Line 3750 1000 3400 1000 Wire Wire Line 750 3500 1500 3500 Text Label 6400 3900 0 50 ~ 0 TEMP_OUT $Comp L Device:C C313 U 1 1 5E2394E4 P 6250 4650 F 0 "C313" V 6502 4650 50 0000 C CNN F 1 "Bridge" V 6411 4650 50 0000 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 6288 4500 50 0001 C CNN F 3 "~" H 6250 4650 50 0001 C CNN 1 6250 4650 1 0 0 -1 $EndComp Wire Wire Line 6250 4800 6250 4900 $Comp L power:GND #PWR0323 U 1 1 5E241AC0 P 6250 4900 F 0 "#PWR0323" H 6250 4650 50 0001 C CNN F 1 "GND" H 6255 4727 50 0000 C CNN F 2 "" H 6250 4900 50 0001 C CNN F 3 "" H 6250 4900 50 0001 C CNN 1 6250 4900 1 0 0 -1 $EndComp Wire Notes Line 3800 5750 6500 5750 Wire Notes Line 3950 7700 6500 7700 Wire Notes Line 6500 5750 6500 7700 Wire Wire Line 2700 1650 2700 2050 $Comp L power:GND #PWR0311 U 1 1 5E102FCD P 3850 2150 F 0 "#PWR0311" H 3850 1900 50 0001 C CNN F 1 "GND" H 3855 1977 50 0000 C CNN F 2 "" H 3850 2150 50 0001 C CNN F 3 "" H 3850 2150 50 0001 C CNN 1 3850 2150 1 0 0 -1 $EndComp Wire Wire Line 3850 2150 3850 1850 Connection ~ 3850 1850 Wire Wire Line 2500 1550 2600 1550 Wire Wire Line 2400 2050 2700 2050 Connection ~ 2700 2050 Wire Wire Line 2700 2050 2700 2100 Wire Wire Line 2400 1750 2400 1550 Wire Wire Line 2400 1550 2500 1550 Connection ~ 2500 1550 Wire Wire Line 1500 3700 1300 3700 Wire Wire Line 1300 3700 1300 4100 Wire Wire Line 1300 4100 2450 4100 Wire Wire Line 2450 4100 2450 4000 $Comp L Device:C C305 U 1 1 5E232923 P 2450 3850 F 0 "C305" H 2565 3896 50 0000 L CNN F 1 "100n" H 2565 3805 50 0000 L CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 2488 3700 50 0001 C CNN F 3 "~" H 2450 3850 50 0001 C CNN 1 2450 3850 1 0 0 -1 $EndComp Wire Wire Line 2450 4100 2950 4100 Wire Wire Line 2950 4100 2950 4000 Connection ~ 2450 4100 Wire Wire Line 2450 3700 2450 3600 Connection ~ 2450 3600 Wire Wire Line 2450 3600 2950 3600 Wire Wire Line 2950 3700 2950 3600 Connection ~ 2950 3600 $Comp L Device:R R305 U 1 1 5E255618 P 2950 3850 F 0 "R305" H 3020 3896 50 0000 L CNN F 1 "1k 0.1%" H 3020 3805 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 2880 3850 50 0001 C CNN F 3 "~" H 2950 3850 50 0001 C CNN 1 2950 3850 1 0 0 -1 $EndComp $Comp L Device:R R302 U 1 1 5E25723A P 1300 4350 F 0 "R302" H 1370 4396 50 0000 L CNN F 1 "1k 0.1%" H 1370 4305 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 1230 4350 50 0001 C CNN F 3 "~" H 1300 4350 50 0001 C CNN 1 1300 4350 1 0 0 -1 $EndComp Wire Wire Line 1300 4200 1300 4100 Connection ~ 1300 4100 Wire Wire Line 1300 4500 1300 4600 $Comp L power:GND #PWR0302 U 1 1 5E26828E P 1300 4600 F 0 "#PWR0302" H 1300 4350 50 0001 C CNN F 1 "GND" H 1305 4427 50 0000 C CNN F 2 "" H 1300 4600 50 0001 C CNN F 3 "" H 1300 4600 50 0001 C CNN 1 1300 4600 1 0 0 -1 $EndComp Text Label 700 5450 0 50 ~ 0 S- Wire Wire Line 700 5450 1450 5450 Wire Wire Line 1450 5650 1250 5650 Wire Wire Line 1250 5650 1250 6050 Wire Wire Line 1250 6050 2400 6050 Wire Wire Line 2400 6050 2400 5950 $Comp L Device:C C304 U 1 1 5E292BC1 P 2400 5800 F 0 "C304" H 2515 5846 50 0000 L CNN F 1 "100n" H 2515 5755 50 0000 L CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 2438 5650 50 0001 C CNN F 3 "~" H 2400 5800 50 0001 C CNN 1 2400 5800 1 0 0 -1 $EndComp Wire Wire Line 2400 6050 2900 6050 Wire Wire Line 2900 6050 2900 5950 Connection ~ 2400 6050 Wire Wire Line 2400 5650 2400 5550 Connection ~ 2400 5550 Wire Wire Line 2400 5550 2900 5550 Wire Wire Line 2900 5650 2900 5550 Connection ~ 2900 5550 $Comp L Device:R R304 U 1 1 5E292BD1 P 2900 5800 F 0 "R304" H 2970 5846 50 0000 L CNN F 1 "1k 0.1%" H 2970 5755 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 2830 5800 50 0001 C CNN F 3 "~" H 2900 5800 50 0001 C CNN 1 2900 5800 1 0 0 -1 $EndComp $Comp L Device:R R301 U 1 1 5E292BD7 P 1250 6300 F 0 "R301" H 1320 6346 50 0000 L CNN F 1 "1k 0.1%" H 1320 6255 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 1180 6300 50 0001 C CNN F 3 "~" H 1250 6300 50 0001 C CNN 1 1250 6300 1 0 0 -1 $EndComp Wire Wire Line 1250 6150 1250 6050 Connection ~ 1250 6050 Wire Wire Line 1250 6450 1250 6550 $Comp L power:GND #PWR0301 U 1 1 5E292BE0 P 1250 6550 F 0 "#PWR0301" H 1250 6300 50 0001 C CNN F 1 "GND" H 1255 6377 50 0000 C CNN F 2 "" H 1250 6550 50 0001 C CNN F 3 "" H 1250 6550 50 0001 C CNN 1 1250 6550 1 0 0 -1 $EndComp $Comp L Device:R R307 U 1 1 5E333B2A P 3600 3600 F 0 "R307" H 3670 3646 50 0000 L CNN F 1 "1k 0.1%" H 3670 3555 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 3530 3600 50 0001 C CNN F 3 "~" H 3600 3600 50 0001 C CNN 1 3600 3600 0 1 1 0 $EndComp Wire Wire Line 2950 3600 3450 3600 Wire Wire Line 3750 3600 4000 3600 Wire Wire Line 4000 3600 4000 3800 Wire Wire Line 4000 3800 4550 3800 Wire Wire Line 4000 3800 4000 4200 Connection ~ 4000 3800 $Comp L Device:R R309 U 1 1 5E352DB6 P 4000 4350 F 0 "R309" H 4070 4396 50 0000 L CNN F 1 "5k 0.1%" H 4070 4305 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 3930 4350 50 0001 C CNN F 3 "~" H 4000 4350 50 0001 C CNN 1 4000 4350 -1 0 0 1 $EndComp Wire Wire Line 4000 4500 4000 4550 $Comp L power:GND #PWR0312 U 1 1 5E35E6EA P 4000 4550 F 0 "#PWR0312" H 4000 4300 50 0001 C CNN F 1 "GND" H 4005 4377 50 0000 C CNN F 2 "" H 4000 4550 50 0001 C CNN F 3 "" H 4000 4550 50 0001 C CNN 1 4000 4550 1 0 0 -1 $EndComp Wire Wire Line 4350 5550 4350 5400 Wire Wire Line 2900 5550 4350 5550 $Comp L Device:R R312 U 1 1 5E381FD9 P 4350 5250 F 0 "R312" H 4100 5300 50 0000 L CNN F 1 "1k 0.1%" H 4000 5200 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4280 5250 50 0001 C CNN F 3 "~" H 4350 5250 50 0001 C CNN 1 4350 5250 -1 0 0 1 $EndComp Wire Wire Line 4350 5100 4350 4350 Wire Wire Line 4350 4350 5600 4350 Connection ~ 4350 4350 Wire Wire Line 4350 4350 4350 4000 $Comp L Device:R R314 U 1 1 5E3A5DAA P 5600 4200 F 0 "R314" H 5670 4246 50 0000 L CNN F 1 "5k 0.1%" H 5670 4155 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 5530 4200 50 0001 C CNN F 3 "~" H 5600 4200 50 0001 C CNN 1 5600 4200 -1 0 0 1 $EndComp Wire Wire Line 5600 4050 5600 3900 Connection ~ 5600 3900 Wire Notes Line 5200 3950 5700 3950 Wire Notes Line 5700 3950 5700 4300 Wire Notes Line 5700 4300 5200 4300 Wire Notes Line 5200 4300 5200 3950 Wire Notes Line 3550 4200 4100 4200 Wire Notes Line 4100 4200 4100 4500 Wire Notes Line 4100 4500 3550 4500 Wire Notes Line 3550 4500 3550 4200 Wire Notes Line 3800 4000 2850 4000 Wire Notes Line 2850 4000 2850 3500 Wire Notes Line 2850 3500 3800 3500 Wire Notes Line 3800 3500 3800 4000 Wire Notes Line 1050 6150 1050 6500 Wire Notes Line 1050 6500 1750 6500 Wire Notes Line 1750 6500 1750 6150 Wire Notes Line 1050 6150 1750 6150 Wire Notes Line 2750 5450 2750 6150 Wire Notes Line 2750 6150 3350 6150 Wire Notes Line 3350 6150 3350 5450 Wire Notes Line 3350 5450 2750 5450 Wire Notes Line 4200 5100 4200 5400 Wire Notes Line 4200 5400 4750 5400 Wire Notes Line 4750 5400 4750 5100 Wire Notes Line 4750 5100 4200 5100 $Comp L power:+3.3VA #PWR0325 U 1 1 5E4EDCE6 P 10350 2500 F 0 "#PWR0325" H 10350 2350 50 0001 C CNN F 1 "+3.3VA" H 10365 2673 50 0000 C CNN F 2 "" H 10350 2500 50 0001 C CNN F 3 "" H 10350 2500 50 0001 C CNN 1 10350 2500 1 0 0 -1 $EndComp $Comp L Reference_Voltage:TL431DBZ U303 U 1 1 5E5592F3 P 2700 1550 F 0 "U303" V 2746 1480 50 0000 R CNN F 1 "TL431LI-DBZ" V 2655 1480 50 0000 R CNN F 2 "Package_TO_SOT_SMD:SOT-23" H 2700 1400 50 0001 C CIN F 3 "http://www.ti.com/lit/ds/symlink/tl431.pdf" H 2700 1550 50 0001 C CIN 1 2700 1550 0 -1 -1 0 $EndComp $Comp L Device:C C303 U 1 1 5E55CA76 P 2400 1900 F 0 "C303" H 2515 1946 50 0000 L CNN F 1 "10u" H 2515 1855 50 0000 L CNN F 2 "Capacitor_SMD:C_1210_3225Metric" H 2438 1750 50 0001 C CNN F 3 "~" H 2400 1900 50 0001 C CNN 1 2400 1900 1 0 0 -1 $EndComp Wire Wire Line 2700 1050 2700 1200 Wire Wire Line 2700 1200 3150 1200 Connection ~ 2700 1200 Wire Wire Line 2700 1200 2700 1300 Connection ~ 3400 1200 Wire Wire Line 3400 1200 3400 850 $Comp L power:+3.3VA #PWR0309 U 1 1 5E58A8D7 P 2700 700 F 0 "#PWR0309" H 2700 550 50 0001 C CNN F 1 "+3.3VA" H 2715 873 50 0000 C CNN F 2 "" H 2700 700 50 0001 C CNN F 3 "" H 2700 700 50 0001 C CNN 1 2700 700 1 0 0 -1 $EndComp $Comp L power:+3.3VA #PWR0314 U 1 1 5E58CB8A P 9150 4500 F 0 "#PWR0314" H 9150 4350 50 0001 C CNN F 1 "+3.3VA" H 9165 4673 50 0000 C CNN F 2 "" H 9150 4500 50 0001 C CNN F 3 "" H 9150 4500 50 0001 C CNN 1 9150 4500 1 0 0 -1 $EndComp Wire Wire Line 7650 1400 7650 2000 Connection ~ 7650 1400 Wire Wire Line 7650 1400 9050 1400 Wire Wire Line 8050 1500 8050 2000 Connection ~ 8050 1500 Wire Wire Line 8050 1500 9550 1500 $Comp L Device:R R318 U 1 1 5E5C0B2B P 7850 2000 F 0 "R318" V 7643 2000 50 0000 C CNN F 1 "2M" V 7734 2000 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 7780 2000 50 0001 C CNN F 3 "~" H 7850 2000 50 0001 C CNN 1 7850 2000 0 1 1 0 $EndComp Wire Wire Line 7650 2000 7700 2000 Wire Wire Line 8000 2000 8050 2000 Wire Wire Line 9050 1400 9050 1850 Wire Wire Line 9550 1500 9550 1850 $Comp L Device:C C315 U 1 1 5E656F7C P 9300 1850 F 0 "C315" H 9415 1896 50 0000 L CNN F 1 "22n" H 9415 1805 50 0000 L CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 9338 1700 50 0001 C CNN F 3 "~" H 9300 1850 50 0001 C CNN 1 9300 1850 0 1 1 0 $EndComp Wire Wire Line 9150 1850 9050 1850 Wire Wire Line 9450 1850 9550 1850 Wire Wire Line 6250 4500 6250 4350 $Comp L Device:R R315 U 1 1 5E696A10 P 5950 3900 F 0 "R315" V 5743 3900 50 0000 C CNN F 1 "0" V 5834 3900 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 5880 3900 50 0001 C CNN F 3 "~" H 5950 3900 50 0001 C CNN 1 5950 3900 0 -1 -1 0 $EndComp Wire Wire Line 5600 3900 5800 3900 Wire Wire Line 4350 4000 4350 3350 Connection ~ 4350 4000 $Comp L Device:R R311 U 1 1 5E6BEB7A P 4350 3200 F 0 "R311" H 4420 3246 50 0000 L CNN F 1 "DNP" H 4420 3155 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 4280 3200 50 0001 C CNN F 3 "~" H 4350 3200 50 0001 C CNN 1 4350 3200 -1 0 0 1 $EndComp $Comp L Device:C C308 U 1 1 5E6BF72D P 4550 3200 F 0 "C308" V 4298 3200 50 0000 C CNN F 1 "DNP" V 4389 3200 50 0000 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 4588 3050 50 0001 C CNN F 3 "~" H 4550 3200 50 0001 C CNN 1 4550 3200 -1 0 0 1 $EndComp Wire Wire Line 4350 4000 4650 4000 Wire Wire Line 4550 3800 4550 3350 Connection ~ 4550 3800 Wire Wire Line 4550 3800 4650 3800 Wire Wire Line 4550 3050 4550 3000 Wire Wire Line 4550 3000 4350 3000 Wire Wire Line 4350 3000 4350 3050 Connection ~ 6250 3900 Wire Wire Line 6100 3900 6250 3900 Wire Wire Line 6250 3900 6900 3900 $Comp L Device:R R317 U 1 1 5DB0C2DA P 6250 4050 F 0 "R317" V 6043 4050 50 0000 C CNN F 1 "680" V 6134 4050 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 6180 4050 50 0001 C CNN F 3 "~" H 6250 4050 50 0001 C CNN 1 6250 4050 -1 0 0 1 $EndComp Wire Wire Line 6700 4500 6700 4350 Wire Wire Line 6700 4350 6250 4350 Connection ~ 6250 4350 Wire Wire Line 6250 4350 6250 4200 Wire Wire Line 6700 4800 6700 4900 $Comp L power:GND #PWR0324 U 1 1 5E8423F6 P 6700 4900 F 0 "#PWR0324" H 6700 4650 50 0001 C CNN F 1 "GND" H 6705 4727 50 0000 C CNN F 2 "" H 6700 4900 50 0001 C CNN F 3 "" H 6700 4900 50 0001 C CNN 1 6700 4900 1 0 0 -1 $EndComp $Comp L shimatta_analog:MCP6V34 U301 U 5 1 5E3F0A96 P 1600 3400 F 0 "U301" H 2028 3071 50 0000 L CNN F 1 "MCP6V34" H 2028 2980 50 0000 L CNN F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 1600 3400 50 0001 C CNN F 3 "" H 1600 3400 50 0001 C CNN 5 1600 3400 1 0 0 -1 $EndComp $Comp L power:GND #PWR0137 U 1 1 5E418AE0 P 9150 5800 F 0 "#PWR0137" H 9150 5550 50 0001 C CNN F 1 "GND" H 9155 5627 50 0000 C CNN F 2 "" H 9150 5800 50 0001 C CNN F 3 "" H 9150 5800 50 0001 C CNN 1 9150 5800 1 0 0 -1 $EndComp Wire Wire Line 9150 5800 9150 5700 $Comp L shimatta_analog:MCP6V34 U301 U 3 1 5E44D369 P 4750 3700 F 0 "U301" H 4925 3865 50 0000 C CNN F 1 "MCP6V34" H 4925 3774 50 0000 C CNN F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 4750 3700 50 0001 C CNN F 3 "" H 4750 3700 50 0001 C CNN 3 4750 3700 1 0 0 -1 $EndComp Wire Wire Line 5100 1350 5500 1350 $Comp L shimatta_analog:MCP6V34 U301 U 4 1 5E482137 P 1550 5350 F 0 "U301" H 1725 5515 50 0000 C CNN F 1 "MCP6V34" H 1725 5424 50 0000 C CNN F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 1550 5350 50 0001 C CNN F 3 "" H 1550 5350 50 0001 C CNN 4 1550 5350 1 0 0 -1 $EndComp $Comp L shimatta_analog:MCP6V34 U301 U 1 1 5E483253 P 8950 4850 F 0 "U301" H 9125 5015 50 0000 C CNN F 1 "MCP6V34" H 9125 4924 50 0000 C CNN F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 8950 4850 50 0001 C CNN F 3 "" H 8950 4850 50 0001 C CNN 1 8950 4850 1 0 0 -1 $EndComp $Comp L shimatta_analog:MCP6V34 U301 U 2 1 5E483E8E P 4650 1150 F 0 "U301" H 4825 1315 50 0000 C CNN F 1 "MCP6V34" H 4825 1224 50 0000 C CNN F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 4650 1150 50 0001 C CNN F 3 "" H 4650 1150 50 0001 C CNN 2 4650 1150 1 0 0 -1 $EndComp Wire Wire Line 5200 3900 5250 3900 Wire Wire Line 2050 3600 2450 3600 Wire Wire Line 2000 5550 2400 5550 $Comp L Device:R R319 U 1 1 5E6300E3 P 5400 3900 F 0 "R319" V 5193 3900 50 0000 C CNN F 1 "100" V 5284 3900 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 5330 3900 50 0001 C CNN F 3 "~" H 5400 3900 50 0001 C CNN 1 5400 3900 0 -1 -1 0 $EndComp Wire Wire Line 5550 3900 5600 3900 $Comp L Device:C C314 U 1 1 5E82B184 P 6700 4650 F 0 "C314" V 6952 4650 50 0000 C CNN F 1 "DNP" V 6861 4650 50 0000 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 6738 4500 50 0001 C CNN F 3 "~" H 6700 4650 50 0001 C CNN 1 6700 4650 1 0 0 -1 $EndComp Text Notes 5350 4700 0 50 ~ 0 This must be shorted\n Text Notes 6800 4400 0 50 ~ 0 If the circuit oscillates, try:\nR319 = 0 Ohm\nR317 = 250 Ohm\nC313 = 10 uF\nC314 = 2.2 uF\n $Comp L Connector:TestPoint TP302 U 1 1 5E42D334 P 6250 3550 F 0 "TP302" H 6308 3668 50 0000 L CNN F 1 "TEMP_OUT" H 6308 3577 50 0000 L CNN F 2 "TestPoint:TestPoint_Pad_D1.5mm" H 6450 3550 50 0001 C CNN F 3 "~" H 6450 3550 50 0001 C CNN 1 6250 3550 1 0 0 -1 $EndComp Wire Wire Line 6250 3550 6250 3900 Wire Wire Line 3150 900 3150 1200 Connection ~ 3150 1200 Wire Wire Line 3150 1200 3400 1200 $Comp L Connector:TestPoint TP301 U 1 1 5E43ED77 P 3150 900 F 0 "TP301" H 3208 1018 50 0000 L CNN F 1 "VREF" H 3208 927 50 0000 L CNN F 2 "TestPoint:TestPoint_Pad_D1.5mm" H 3350 900 50 0001 C CNN F 3 "~" H 3350 900 50 0001 C CNN 1 3150 900 1 0 0 -1 $EndComp $Comp L Connector:TestPoint TP303 U 1 1 5E4680D7 P 5150 2200 F 0 "TP303" H 5092 2226 50 0000 R CNN F 1 "IBIAS" H 5092 2317 50 0000 R CNN F 2 "TestPoint:TestPoint_Pad_D1.5mm" H 5350 2200 50 0001 C CNN F 3 "~" H 5350 2200 50 0001 C CNN 1 5150 2200 -1 0 0 1 $EndComp Wire Wire Line 5150 2200 5150 1750 Connection ~ 5150 1750 Wire Wire Line 5150 1750 5500 1750 Text Label 2800 1200 0 50 ~ 0 VREF_OP $EndSCHEMATC