EESchema Schematic File Version 5
LIBS:sensor-cache
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
Comment5 ""
Comment6 ""
Comment7 ""
Comment8 ""
Comment9 ""
$EndDescr
$Comp
L Device:L_Core_Ferrite L2
U 1 1 5E264DFA
P 2000 2750
F 0 "L2" H 1950 2700 50  0000 R CNN
F 1 "47u" H 1950 2800 50  0000 R CNN
F 2 "Inductor_SMD:L_Taiyo-Yuden_NR-50xx_HandSoldering" H 2000 2750 50  0001 C CNN
F 3 "~" H 2000 2750 50  0001 C CNN
F 4 "BOU SRN5040-470M" H 2000 2750 50  0001 C CNN "Reichelt"
	1    2000 2750
	-1   0    0    1   
$EndComp
Wire Wire Line
	2000 2600 2000 2500
Text Notes 1900 2250 3    50   ~ 0
opposing polarity
Wire Wire Line
	2000 2100 2000 2200
Wire Wire Line
	2000 2900 2000 3000
$Comp
L Amplifier_Operational:MCP6002-xSN U1
U 1 1 5E28B721
P 3800 2200
F 0 "U1" H 3950 2350 50  0000 C CNN
F 1 "MCP6002-xSN" H 3800 2476 50  0001 C CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 3800 2200 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 3800 2200 50  0001 C CNN
	1    3800 2200
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R6
U 1 1 5E28E7CD
P 3400 2800
F 0 "R6" H 3341 2754 50  0000 R CNN
F 1 "100" H 3341 2845 50  0000 R CNN
F 2 "Resistor_SMD:R_0603_1608Metric" H 3400 2800 50  0001 C CNN
F 3 "~" H 3400 2800 50  0001 C CNN
	1    3400 2800
	-1   0    0    1   
$EndComp
$Comp
L Device:R_Small R5
U 1 1 5E28F3B5
P 3850 2600
F 0 "R5" V 4046 2600 50  0000 C CNN
F 1 "1k" V 3955 2600 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" H 3850 2600 50  0001 C CNN
F 3 "~" H 3850 2600 50  0001 C CNN
	1    3850 2600
	0    1    -1   0   
$EndComp
Wire Wire Line
	3500 2300 3400 2300
Wire Wire Line
	3400 2300 3400 2600
Wire Wire Line
	3750 2600 3400 2600
Connection ~ 3400 2600
Wire Wire Line
	3400 2600 3400 2700
Wire Wire Line
	3400 3000 3400 2900
Wire Wire Line
	3950 2600 4200 2600
Wire Wire Line
	4200 2200 4100 2200
$Comp
L Amplifier_Operational:MCP6002-xSN U2
U 2 1 5E2A8E40
P 5300 2300
F 0 "U2" H 5300 1933 50  0000 C CNN
F 1 "MCP6002-xSN" H 5300 2024 50  0000 C CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 5300 2300 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 5300 2300 50  0001 C CNN
	2    5300 2300
	1    0    0    1   
$EndComp
$Comp
L Device:C_Small C1
U 1 1 5E2B41DA
P 4400 2200
F 0 "C1" V 4171 2200 50  0000 C CNN
F 1 "1u" V 4262 2200 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 4400 2200 50  0001 C CNN
F 3 "~" H 4400 2200 50  0001 C CNN
	1    4400 2200
	0    1    1    0   
$EndComp
Wire Wire Line
	4300 2200 4200 2200
Connection ~ 4200 2200
$Comp
L Device:R_Small R1
U 1 1 5E2B9B8F
P 5300 1800
F 0 "R1" V 5496 1800 50  0000 C CNN
F 1 "100k" V 5405 1800 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" H 5300 1800 50  0001 C CNN
F 3 "~" H 5300 1800 50  0001 C CNN
	1    5300 1800
	0    1    -1   0   
$EndComp
$Comp
L Device:R_Small R4
U 1 1 5E2C5C0C
P 4750 2200
F 0 "R4" V 4946 2200 50  0000 C CNN
F 1 "1k" V 4855 2200 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" H 4750 2200 50  0001 C CNN
F 3 "~" H 4750 2200 50  0001 C CNN
	1    4750 2200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4850 2200 4900 2200
Wire Wire Line
	4650 2200 4500 2200
Wire Wire Line
	4900 2200 4900 1800
Wire Wire Line
	4900 1800 5200 1800
Connection ~ 4900 2200
Wire Wire Line
	4900 2200 5000 2200
Wire Wire Line
	5400 1800 5700 1800
Wire Wire Line
	5700 1800 5700 2300
Wire Wire Line
	5600 2300 5700 2300
Wire Wire Line
	5000 2400 4900 2400
Wire Wire Line
	4900 2400 4900 3000
Wire Wire Line
	4900 3000 3400 3000
Connection ~ 3400 3000
Text Label 3850 3000 0    50   ~ 0
VGND
$Comp
L Device:L_Core_Ferrite L1
U 1 1 5E264427
P 2000 2350
F 0 "L1" H 1956 2396 50  0000 R CNN
F 1 "47u" H 1956 2305 50  0000 R CNN
F 2 "Inductor_SMD:L_Taiyo-Yuden_NR-50xx_HandSoldering" H 2000 2350 50  0001 C CNN
F 3 "~" H 2000 2350 50  0001 C CNN
F 4 "BOU SRN5040-470M" H 2000 2350 50  0001 C CNN "Reichelt"
	1    2000 2350
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R3
U 1 1 5E2F0F3C
P 2850 2100
F 0 "R3" V 3046 2100 50  0000 C CNN
F 1 "220k" V 2955 2100 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" H 2850 2100 50  0001 C CNN
F 3 "~" H 2850 2100 50  0001 C CNN
	1    2850 2100
	0    1    -1   0   
$EndComp
$Comp
L Device:R_Small R2
U 1 1 5E2F6F92
P 2400 2100
F 0 "R2" V 2596 2100 50  0000 C CNN
F 1 "220k" V 2505 2100 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" H 2400 2100 50  0001 C CNN
F 3 "~" H 2400 2100 50  0001 C CNN
	1    2400 2100
	0    1    -1   0   
$EndComp
$Comp
L Device:C_Small C4
U 1 1 5E2FB873
P 3100 2350
F 0 "C4" H 3192 2304 50  0000 L CNN
F 1 "470p" H 3192 2395 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 3100 2350 50  0001 C CNN
F 3 "~" H 3100 2350 50  0001 C CNN
	1    3100 2350
	-1   0    0    1   
$EndComp
$Comp
L Device:C_Small C3
U 1 1 5E30B2B2
P 2600 2350
F 0 "C3" H 2509 2396 50  0000 R CNN
F 1 "1n" H 2509 2305 50  0000 R CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2600 2350 50  0001 C CNN
F 3 "~" H 2600 2350 50  0001 C CNN
	1    2600 2350
	1    0    0    -1  
$EndComp
Wire Wire Line
	2000 2100 2300 2100
Wire Wire Line
	2950 2100 3100 2100
Wire Wire Line
	3100 2250 3100 2100
Connection ~ 3100 2100
Wire Wire Line
	3100 2100 3500 2100
Wire Wire Line
	3100 2450 3100 3000
Connection ~ 3100 3000
Wire Wire Line
	3100 3000 3400 3000
Wire Wire Line
	2000 3000 3100 3000
Wire Wire Line
	2500 2100 2600 2100
Wire Wire Line
	2600 2100 2600 2250
Connection ~ 2600 2100
Wire Wire Line
	2600 2100 2750 2100
Wire Wire Line
	2600 2450 2600 2600
Wire Wire Line
	2600 2600 3400 2600
$Comp
L Device:C_Small C2
U 1 1 5E332C54
P 4900 2300
F 0 "C2" H 4992 2304 50  0000 L CNN
F 1 "DNP" H 4992 2395 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 4900 2300 50  0001 C CNN
F 3 "~" H 4900 2300 50  0001 C CNN
	1    4900 2300
	-1   0    0    1   
$EndComp
Connection ~ 4900 2400
Wire Wire Line
	4900 3000 5950 3000
Connection ~ 4900 3000
Wire Wire Line
	5950 2450 6200 2450
Wire Wire Line
	5950 2450 5950 3000
Wire Wire Line
	6200 2300 5700 2300
Connection ~ 5700 2300
Text Label 6200 2300 2    50   ~ 0
SIG_OUT
Text Label 6200 2450 2    50   ~ 0
REF
$Comp
L Amplifier_Operational:MCP6002-xSN U?
U 3 1 5E30AB72
P 3600 2200
F 0 "U?" H 3600 1833 50  0001 C CNN
F 1 "MCP6002-xSN" H 3150 2450 50  0000 C CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 3600 2200 50  0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf" H 3600 2200 50  0001 C CNN
	3    3600 2200
	-1   0    0    -1  
$EndComp
Wire Wire Line
	4200 2200 4200 2600
$EndSCHEMATC