EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 7
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
	9050 4450 9300 4450
Text HLabel 9300 4350 2    50   Input ~ 0
ADC_DATA8
Text HLabel 9300 4250 2    50   Input ~ 0
ADC_DATA7
Text HLabel 9300 4150 2    50   Input ~ 0
ADC_DATA6
Text HLabel 9300 4050 2    50   Input ~ 0
ADC_DATA5
Text HLabel 9300 3950 2    50   Input ~ 0
ADC_DATA4
Text HLabel 9300 3850 2    50   Input ~ 0
ADC_DATA3
Text HLabel 9300 3750 2    50   Input ~ 0
ADC_DATA2
Text HLabel 9300 3650 2    50   Input ~ 0
ADC_DATA1
Wire Wire Line
	4450 4150 4350 4150
$Comp
L power:+5VA #PWR0108
U 1 1 60CD6EC0
P 4450 4150
F 0 "#PWR0108" H 4450 4000 50  0001 C CNN
F 1 "+5VA" V 4465 4278 50  0000 L CNN
F 2 "" H 4450 4150 50  0001 C CNN
F 3 "" H 4450 4150 50  0001 C CNN
	1    4450 4150
	0    1    1    0   
$EndComp
Connection ~ 5900 3050
Wire Wire Line
	5900 2900 5900 3050
$Comp
L power:GND #PWR057
U 1 1 60CCC812
P 5900 2900
F 0 "#PWR057" H 5900 2650 50  0001 C CNN
F 1 "GND" H 5905 2727 50  0000 C CNN
F 2 "" H 5900 2900 50  0001 C CNN
F 3 "" H 5900 2900 50  0001 C CNN
	1    5900 2900
	-1   0    0    1   
$EndComp
Wire Wire Line
	6150 3050 6150 3100
Wire Wire Line
	5900 3050 6150 3050
Wire Wire Line
	5900 3100 5900 3050
Wire Wire Line
	6150 3550 6250 3550
Connection ~ 6150 3550
Wire Wire Line
	6150 3400 6150 3550
Wire Wire Line
	5900 3650 6250 3650
Connection ~ 5900 3650
Wire Wire Line
	5900 3400 5900 3650
Wire Wire Line
	6050 3550 6150 3550
Wire Wire Line
	5850 3650 5900 3650
Wire Wire Line
	5650 3750 6250 3750
$Comp
L Device:C C41
U 1 1 60CB7A55
P 6150 3250
F 0 "C41" H 6265 3296 50  0000 L CNN
F 1 "0.1uF" H 6265 3205 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6188 3100 50  0001 C CNN
F 3 "~" H 6150 3250 50  0001 C CNN
	1    6150 3250
	1    0    0    -1  
$EndComp
$Comp
L Device:C C40
U 1 1 60CB5566
P 5900 3250
F 0 "C40" H 6015 3296 50  0000 L CNN
F 1 "10uF" H 6015 3205 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 5938 3100 50  0001 C CNN
F 3 "~" H 5900 3250 50  0001 C CNN
	1    5900 3250
	1    0    0    -1  
$EndComp
Text HLabel 9300 4450 2    50   Input ~ 0
ADC_CLK
Text HLabel 2800 3750 0    50   Input ~ 0
ADC_IN
Wire Wire Line
	5650 4350 6250 4350
Connection ~ 5650 4350
Wire Wire Line
	5650 4000 5650 4350
Wire Wire Line
	5850 4000 5650 4000
Wire Wire Line
	6250 4000 6250 3950
Connection ~ 6250 4000
Wire Wire Line
	6150 4000 6250 4000
Wire Wire Line
	6250 4050 6250 4000
$Comp
L Device:C C39
U 1 1 614EF02F
P 6000 4000
F 0 "C39" V 6252 4000 50  0000 C CNN
F 1 "0.1uF" V 6161 4000 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6038 3850 50  0001 C CNN
F 3 "~" H 6000 4000 50  0001 C CNN
	1    6000 4000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3900 5350 3900 5450
Wire Wire Line
	3900 4950 3900 5050
Wire Wire Line
	4800 3850 5000 3850
Connection ~ 5750 4250
Wire Wire Line
	3750 4250 5750 4250
Wire Wire Line
	3750 3750 3550 3750
Connection ~ 3750 3750
Wire Wire Line
	3750 4250 3750 3750
Wire Wire Line
	3250 3750 2800 3750
Wire Wire Line
	4050 3750 3750 3750
Wire Wire Line
	4250 3400 4250 3550
$Comp
L power:+5VA #PWR0107
U 1 1 614E5495
P 4250 3400
F 0 "#PWR0107" H 4250 3250 50  0001 C CNN
F 1 "+5VA" H 4265 3573 50  0000 C CNN
F 2 "" H 4250 3400 50  0001 C CNN
F 3 "" H 4250 3400 50  0001 C CNN
	1    4250 3400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C36
U 1 1 614DE0CC
P 3400 3750
F 0 "C36" V 3148 3750 50  0000 C CNN
F 1 "0.1uF" V 3239 3750 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 3438 3600 50  0001 C CNN
F 3 "~" H 3400 3750 50  0001 C CNN
	1    3400 3750
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR0106
U 1 1 614DCD4E
P 3900 5450
F 0 "#PWR0106" H 3900 5200 50  0001 C CNN
F 1 "GND" H 3905 5277 50  0000 C CNN
F 2 "" H 3900 5450 50  0001 C CNN
F 3 "" H 3900 5450 50  0001 C CNN
	1    3900 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:C C37
U 1 1 614DC5D4
P 3900 5200
F 0 "C37" H 4015 5246 50  0000 L CNN
F 1 "0.1uF" H 4015 5155 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 3938 5050 50  0001 C CNN
F 3 "~" H 3900 5200 50  0001 C CNN
	1    3900 5200
	1    0    0    -1  
$EndComp
Connection ~ 3900 4550
Wire Wire Line
	3900 4650 3900 4550
$Comp
L Device:R R32
U 1 1 614DAD32
P 3900 4800
F 0 "R32" H 3970 4846 50  0000 L CNN
F 1 "402" H 3970 4755 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 3830 4800 50  0001 C CNN
F 3 "~" H 3900 4800 50  0001 C CNN
	1    3900 4800
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 3950 4050 3950
Wire Wire Line
	3900 4550 3900 3950
Wire Wire Line
	4100 4550 3900 4550
Wire Wire Line
	4800 3850 4650 3850
Connection ~ 4800 3850
Wire Wire Line
	4800 4550 4800 3850
Wire Wire Line
	4400 4550 4800 4550
Wire Wire Line
	5100 4350 5450 4350
Connection ~ 5100 4350
Wire Wire Line
	5100 4450 5100 4350
Wire Wire Line
	4250 4350 5100 4350
Wire Wire Line
	4250 4150 4250 4350
$Comp
L Device:R R33
U 1 1 614D4C4E
P 4250 4550
F 0 "R33" V 4043 4550 50  0000 C CNN
F 1 "402" V 4134 4550 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 4180 4550 50  0001 C CNN
F 3 "~" H 4250 4550 50  0001 C CNN
	1    4250 4550
	0    1    1    0   
$EndComp
Wire Wire Line
	5450 3850 6250 3850
Connection ~ 5450 3850
Wire Wire Line
	5300 3850 5450 3850
Wire Wire Line
	5450 4350 5650 4350
Connection ~ 5450 4350
Wire Wire Line
	5450 4150 5450 4350
$Comp
L Device:C C38
U 1 1 614D04E3
P 5450 4000
F 0 "C38" H 5565 4046 50  0000 L CNN
F 1 "47pF" H 5565 3955 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 5488 3850 50  0001 C CNN
F 3 "~" H 5450 4000 50  0001 C CNN
	1    5450 4000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R34
U 1 1 614CFF0D
P 5150 3850
F 0 "R34" V 4943 3850 50  0000 C CNN
F 1 "39" V 5034 3850 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5080 3850 50  0001 C CNN
F 3 "~" H 5150 3850 50  0001 C CNN
	1    5150 3850
	0    1    1    0   
$EndComp
Wire Wire Line
	5750 4250 5850 4250
Wire Wire Line
	5750 4150 5750 4250
Wire Wire Line
	5850 4150 5750 4150
Wire Wire Line
	6150 4250 6250 4250
Wire Wire Line
	6250 4150 6150 4150
$Comp
L Device:R R36
U 1 1 614C7B9C
P 6000 4250
F 0 "R36" V 6207 4250 50  0000 C CNN
F 1 "1k" V 6116 4250 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5930 4250 50  0001 C CNN
F 3 "~" H 6000 4250 50  0001 C CNN
	1    6000 4250
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R35
U 1 1 614C66FD
P 6000 4150
F 0 "R35" V 5793 4150 50  0000 C CNN
F 1 "1k" V 5884 4150 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5930 4150 50  0001 C CNN
F 3 "~" H 6000 4150 50  0001 C CNN
	1    6000 4150
	0    1    1    0   
$EndComp
Wire Wire Line
	5950 4450 6250 4450
$Comp
L power:+5VA #PWR0105
U 1 1 614B6AAE
P 5950 4450
F 0 "#PWR0105" H 5950 4300 50  0001 C CNN
F 1 "+5VA" V 5965 4578 50  0000 L CNN
F 2 "" H 5950 4450 50  0001 C CNN
F 3 "" H 5950 4450 50  0001 C CNN
	1    5950 4450
	0    -1   1    0   
$EndComp
$Comp
L Amplifier_Operational:OPA847xD U13
U 1 1 614B1E6E
P 4350 3850
F 0 "U13" H 4694 3896 50  0000 L CNN
F 1 "OPA681" H 4694 3805 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 4350 3850 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/opa847.pdf" H 4350 4050 50  0001 C CNN
	1    4350 3850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0104
U 1 1 614ABABB
P 5100 4450
F 0 "#PWR0104" H 5100 4200 50  0001 C CNN
F 1 "GND" V 5105 4322 50  0000 R CNN
F 2 "" H 5100 4450 50  0001 C CNN
F 3 "" H 5100 4450 50  0001 C CNN
	1    5100 4450
	-1   0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0103
U 1 1 6148C30D
P 5850 3650
F 0 "#PWR0103" H 5850 3500 50  0001 C CNN
F 1 "+5VA" H 5865 3823 50  0000 C CNN
F 2 "" H 5850 3650 50  0001 C CNN
F 3 "" H 5850 3650 50  0001 C CNN
	1    5850 3650
	0    -1   1    0   
$EndComp
Wire Wire Line
	9100 3550 9050 3550
Wire Wire Line
	9100 3450 9100 3550
$Comp
L power:GND #PWR0102
U 1 1 614887E8
P 5650 3750
F 0 "#PWR0102" H 5650 3500 50  0001 C CNN
F 1 "GND" H 5655 3577 50  0000 C CNN
F 2 "" H 5650 3750 50  0001 C CNN
F 3 "" H 5650 3750 50  0001 C CNN
	1    5650 3750
	0    1    -1   0   
$EndComp
$Comp
L power:GND #PWR0101
U 1 1 61488143
P 9100 3450
F 0 "#PWR0101" H 9100 3200 50  0001 C CNN
F 1 "GND" H 9105 3277 50  0000 C CNN
F 2 "" H 9100 3450 50  0001 C CNN
F 3 "" H 9100 3450 50  0001 C CNN
	1    9100 3450
	1    0    0    1   
$EndComp
Wire Wire Line
	9300 4350 9050 4350
Wire Wire Line
	9300 4250 9050 4250
Wire Wire Line
	9300 4150 9050 4150
Wire Wire Line
	9300 4050 9050 4050
Wire Wire Line
	9300 3950 9050 3950
Wire Wire Line
	9300 3850 9050 3850
Wire Wire Line
	9300 3750 9050 3750
Wire Wire Line
	9050 3650 9300 3650
$Comp
L ADS831:ADS831E_2K5 U7
U 1 1 60FB23DE
P 9050 3550
F 0 "U7" H 10450 3937 60  0000 C CNN
F 1 "ADS831E_2K5" H 10450 3831 60  0000 C CNN
F 2 "ADS831:ADS831E&slash_2K5" H 10450 3790 60  0001 C CNN
F 3 "" H 9050 3550 60  0000 C CNN
	1    9050 3550
	-1   0    0    -1  
$EndComp
$Comp
L Device:L L?
U 1 1 610853E4
P 4400 2900
AR Path="/60C2FE2A/610853E4" Ref="L?"  Part="1" 
AR Path="/60FB17F2/610853E4" Ref="L3"  Part="1" 
F 0 "L3" V 4590 2900 50  0000 C CNN
F 1 "10uH" V 4499 2900 50  0000 C CNN
F 2 "Inductor_SMD:L_0603_1608Metric" H 4400 2900 50  0001 C CNN
F 3 "~" H 4400 2900 50  0001 C CNN
	1    4400 2900
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C?
U 1 1 610853EA
P 4750 3100
AR Path="/60C2FE2A/610853EA" Ref="C?"  Part="1" 
AR Path="/60FB17F2/610853EA" Ref="C13"  Part="1" 
F 0 "C13" H 4865 3146 50  0000 L CNN
F 1 "10uF" H 4865 3055 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 4788 2950 50  0001 C CNN
F 3 "~" H 4750 3100 50  0001 C CNN
	1    4750 3100
	1    0    0    -1  
$EndComp
Wire Wire Line
	4250 2900 4050 2900
Wire Wire Line
	4550 2900 4750 2900
Wire Wire Line
	4750 2950 4750 2900
$Comp
L power:+3V3 #PWR025
U 1 1 6109D4DF
P 4050 2700
F 0 "#PWR025" H 4050 2550 50  0001 C CNN
F 1 "+3V3" H 4065 2873 50  0000 C CNN
F 2 "" H 4050 2700 50  0001 C CNN
F 3 "" H 4050 2700 50  0001 C CNN
	1    4050 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	4050 2700 4050 2900
$Comp
L power:GND #PWR058
U 1 1 6109F3FD
P 4750 3450
F 0 "#PWR058" H 4750 3200 50  0001 C CNN
F 1 "GND" H 4755 3277 50  0000 C CNN
F 2 "" H 4750 3450 50  0001 C CNN
F 3 "" H 4750 3450 50  0001 C CNN
	1    4750 3450
	1    0    0    -1  
$EndComp
Wire Wire Line
	4750 3250 4750 3450
Text Label 4900 2900 0    50   ~ 0
+3V3A
Wire Wire Line
	4900 2900 4750 2900
Connection ~ 4750 2900
Text Label 6050 3550 2    50   ~ 0
+3V3A
$EndSCHEMATC