EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 6
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L ADS831:ADS831E_2K5 U7
U 1 1 60FB23DE
P 8500 1700
F 0 "U7" H 9900 2087 60  0000 C CNN
F 1 "ADS831E_2K5" H 9900 1981 60  0000 C CNN
F 2 "DBQ20" H 9900 1940 60  0001 C CNN
F 3 "" H 8500 1700 60  0000 C CNN
	1    8500 1700
	-1   0    0    -1  
$EndComp
Entry Wire Line
	8850 1700 8750 1800
Entry Wire Line
	8850 1800 8750 1900
Entry Wire Line
	8850 1900 8750 2000
Entry Wire Line
	8850 2000 8750 2100
Entry Wire Line
	8850 2100 8750 2200
Entry Wire Line
	8850 2200 8750 2300
Entry Wire Line
	8850 2300 8750 2400
Entry Wire Line
	8850 2400 8750 2500
Wire Wire Line
	8500 1800 8750 1800
Wire Wire Line
	8750 1900 8500 1900
Wire Wire Line
	8750 2000 8500 2000
Wire Wire Line
	8750 2100 8500 2100
Wire Wire Line
	8750 2200 8500 2200
Wire Wire Line
	8750 2300 8500 2300
Wire Wire Line
	8750 2400 8500 2400
Wire Wire Line
	8750 2500 8500 2500
$Comp
L power:GND #PWR0101
U 1 1 61488143
P 8550 1600
F 0 "#PWR0101" H 8550 1350 50  0001 C CNN
F 1 "GND" H 8555 1427 50  0000 C CNN
F 2 "" H 8550 1600 50  0001 C CNN
F 3 "" H 8550 1600 50  0001 C CNN
	1    8550 1600
	1    0    0    1   
$EndComp
$Comp
L power:GND #PWR0102
U 1 1 614887E8
P 5100 1900
F 0 "#PWR0102" H 5100 1650 50  0001 C CNN
F 1 "GND" H 5105 1727 50  0000 C CNN
F 2 "" H 5100 1900 50  0001 C CNN
F 3 "" H 5100 1900 50  0001 C CNN
	1    5100 1900
	0    1    -1   0   
$EndComp
Wire Wire Line
	8550 1600 8550 1700
Wire Wire Line
	8550 1700 8500 1700
Text HLabel 8850 1400 2    50   Input ~ 0
ADC_DATA_BUS
$Comp
L power:+5VA #PWR0103
U 1 1 6148C30D
P 5300 1800
F 0 "#PWR0103" H 5300 1650 50  0001 C CNN
F 1 "+5VA" H 5315 1973 50  0000 C CNN
F 2 "" 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 power:GND #PWR0104
U 1 1 614ABABB
P 4550 2600
F 0 "#PWR0104" H 4550 2350 50  0001 C CNN
F 1 "GND" V 4555 2472 50  0000 R CNN
F 2 "" H 4550 2600 50  0001 C CNN
F 3 "" H 4550 2600 50  0001 C CNN
	1    4550 2600
	-1   0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:OPA847xD U13
U 1 1 614B1E6E
P 3800 2000
F 0 "U13" H 4144 2046 50  0000 L CNN
F 1 "OPA681" H 4144 1955 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3800 2000 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/opa847.pdf" H 3800 2200 50  0001 C CNN
	1    3800 2000
	1    0    0    -1  
$EndComp
$Comp
L power:+5VA #PWR0105
U 1 1 614B6AAE
P 5400 2600
F 0 "#PWR0105" H 5400 2450 50  0001 C CNN
F 1 "+5VA" V 5415 2728 50  0000 L CNN
F 2 "" H 5400 2600 50  0001 C CNN
F 3 "" H 5400 2600 50  0001 C CNN
	1    5400 2600
	0    -1   1    0   
$EndComp
Wire Wire Line
	5400 2600 5700 2600
$Comp
L Device:R R35
U 1 1 614C66FD
P 5450 2300
F 0 "R35" V 5243 2300 50  0000 C CNN
F 1 "1k" V 5334 2300 50  0000 C CNN
F 2 "" V 5380 2300 50  0001 C CNN
F 3 "~" H 5450 2300 50  0001 C CNN
	1    5450 2300
	0    1    1    0   
$EndComp
$Comp
L Device:R R36
U 1 1 614C7B9C
P 5450 2400
F 0 "R36" V 5657 2400 50  0000 C CNN
F 1 "1k" V 5566 2400 50  0000 C CNN
F 2 "" V 5380 2400 50  0001 C CNN
F 3 "~" H 5450 2400 50  0001 C CNN
	1    5450 2400
	0    -1   -1   0   
$EndComp
Wire Wire Line
	5700 2300 5600 2300
Wire Wire Line
	5600 2400 5700 2400
Wire Wire Line
	5300 2300 5200 2300
Wire Wire Line
	5200 2300 5200 2400
Wire Wire Line
	5200 2400 5300 2400
$Comp
L Device:R R34
U 1 1 614CFF0D
P 4600 2000
F 0 "R34" V 4393 2000 50  0000 C CNN
F 1 "39" V 4484 2000 50  0000 C CNN
F 2 "" V 4530 2000 50  0001 C CNN
F 3 "~" H 4600 2000 50  0001 C CNN
	1    4600 2000
	0    1    1    0   
$EndComp
$Comp
L Device:C C38
U 1 1 614D04E3
P 4900 2150
F 0 "C38" H 5015 2196 50  0000 L CNN
F 1 "47pF" H 5015 2105 50  0000 L CNN
F 2 "" H 4938 2000 50  0001 C CNN
F 3 "~" H 4900 2150 50  0001 C CNN
	1    4900 2150
	1    0    0    -1  
$EndComp
Wire Wire Line
	4900 2300 4900 2500
Connection ~ 4900 2500
Wire Wire Line
	4900 2500 5100 2500
Wire Wire Line
	4750 2000 4900 2000
Connection ~ 4900 2000
Wire Wire Line
	4900 2000 5700 2000
$Comp
L Device:R R33
U 1 1 614D4C4E
P 3700 2700
F 0 "R33" V 3493 2700 50  0000 C CNN
F 1 "402" V 3584 2700 50  0000 C CNN
F 2 "" V 3630 2700 50  0001 C CNN
F 3 "~" H 3700 2700 50  0001 C CNN
	1    3700 2700
	0    1    1    0   
$EndComp
Wire Wire Line
	3700 2300 3700 2500
Wire Wire Line
	3700 2500 4550 2500
Wire Wire Line
	4550 2600 4550 2500
Connection ~ 4550 2500
Wire Wire Line
	4550 2500 4900 2500
Wire Wire Line
	3850 2700 4250 2700
Wire Wire Line
	4250 2700 4250 2000
Connection ~ 4250 2000
Wire Wire Line
	4250 2000 4100 2000
Wire Wire Line
	3550 2700 3350 2700
Wire Wire Line
	3350 2700 3350 2100
Wire Wire Line
	3350 2100 3500 2100
$Comp
L Device:R R32
U 1 1 614DAD32
P 3350 2950
F 0 "R32" H 3420 2996 50  0000 L CNN
F 1 "402" H 3420 2905 50  0000 L CNN
F 2 "" V 3280 2950 50  0001 C CNN
F 3 "~" H 3350 2950 50  0001 C CNN
	1    3350 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	3350 2800 3350 2700
Connection ~ 3350 2700
$Comp
L Device:C C37
U 1 1 614DC5D4
P 3350 3350
F 0 "C37" H 3465 3396 50  0000 L CNN
F 1 "0.1uF" H 3465 3305 50  0000 L CNN
F 2 "" H 3388 3200 50  0001 C CNN
F 3 "~" H 3350 3350 50  0001 C CNN
	1    3350 3350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0106
U 1 1 614DCD4E
P 3350 3600
F 0 "#PWR0106" H 3350 3350 50  0001 C CNN
F 1 "GND" H 3355 3427 50  0000 C CNN
F 2 "" H 3350 3600 50  0001 C CNN
F 3 "" H 3350 3600 50  0001 C CNN
	1    3350 3600
	1    0    0    -1  
$EndComp
$Comp
L Device:C C36
U 1 1 614DE0CC
P 2850 1900
F 0 "C36" V 2598 1900 50  0000 C CNN
F 1 "0.1uF" V 2689 1900 50  0000 C CNN
F 2 "" H 2888 1750 50  0001 C CNN
F 3 "~" H 2850 1900 50  0001 C CNN
	1    2850 1900
	0    1    1    0   
$EndComp
$Comp
L power:+5VA #PWR0107
U 1 1 614E5495
P 3700 1550
F 0 "#PWR0107" H 3700 1400 50  0001 C CNN
F 1 "+5VA" H 3715 1723 50  0000 C CNN
F 2 "" H 3700 1550 50  0001 C CNN
F 3 "" H 3700 1550 50  0001 C CNN
	1    3700 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3700 1550 3700 1700
Wire Wire Line
	3500 1900 3200 1900
Wire Wire Line
	2700 1900 2250 1900
Wire Wire Line
	3200 2400 3200 1900
Connection ~ 3200 1900
Wire Wire Line
	3200 1900 3000 1900
Wire Wire Line
	3200 2400 5200 2400
Connection ~ 5200 2400
Wire Wire Line
	4250 2000 4450 2000
Wire Wire Line
	3350 3100 3350 3200
Wire Wire Line
	3350 3500 3350 3600
$Comp
L Device:C C39
U 1 1 614EF02F
P 5450 2150
F 0 "C39" V 5702 2150 50  0000 C CNN
F 1 "0.1uF" V 5611 2150 50  0000 C CNN
F 2 "" H 5488 2000 50  0001 C CNN
F 3 "~" H 5450 2150 50  0001 C CNN
	1    5450 2150
	0    -1   -1   0   
$EndComp
Wire Wire Line
	5700 2200 5700 2150
Wire Wire Line
	5600 2150 5700 2150
Connection ~ 5700 2150
Wire Wire Line
	5700 2150 5700 2100
Wire Wire Line
	5300 2150 5100 2150
Wire Wire Line
	5100 2150 5100 2500
Connection ~ 5100 2500
Wire Wire Line
	5100 2500 5700 2500
Text HLabel 2250 1900 0    50   Input ~ 0
ADC_IN
Text HLabel 8850 2600 2    50   Input ~ 0
ADC_CLK
Wire Wire Line
	8500 2600 8850 2600
$Comp
L power:+3.3VA #PWR058
U 1 1 60CB177C
P 5500 1700
F 0 "#PWR058" H 5500 1550 50  0001 C CNN
F 1 "+3.3VA" V 5515 1827 50  0000 L CNN
F 2 "" H 5500 1700 50  0001 C CNN
F 3 "" H 5500 1700 50  0001 C CNN
	1    5500 1700
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C40
U 1 1 60CB5566
P 5350 1400
F 0 "C40" H 5465 1446 50  0000 L CNN
F 1 "10uF" H 5465 1355 50  0000 L CNN
F 2 "" H 5388 1250 50  0001 C CNN
F 3 "~" H 5350 1400 50  0001 C CNN
	1    5350 1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C41
U 1 1 60CB7A55
P 5600 1400
F 0 "C41" H 5715 1446 50  0000 L CNN
F 1 "0.1uF" H 5715 1355 50  0000 L CNN
F 2 "" H 5638 1250 50  0001 C CNN
F 3 "~" H 5600 1400 50  0001 C CNN
	1    5600 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	5100 1900 5700 1900
Wire Wire Line
	5300 1800 5350 1800
Wire Wire Line
	5500 1700 5600 1700
Wire Wire Line
	5350 1550 5350 1800
Connection ~ 5350 1800
Wire Wire Line
	5350 1800 5700 1800
Wire Wire Line
	5600 1550 5600 1700
Connection ~ 5600 1700
Wire Wire Line
	5600 1700 5700 1700
Wire Wire Line
	5350 1250 5350 1200
Wire Wire Line
	5350 1200 5600 1200
Wire Wire Line
	5600 1200 5600 1250
$Comp
L power:GND #PWR057
U 1 1 60CCC812
P 5350 1050
F 0 "#PWR057" H 5350 800 50  0001 C CNN
F 1 "GND" H 5355 877 50  0000 C CNN
F 2 "" H 5350 1050 50  0001 C CNN
F 3 "" H 5350 1050 50  0001 C CNN
	1    5350 1050
	-1   0    0    1   
$EndComp
Wire Wire Line
	5350 1050 5350 1200
Connection ~ 5350 1200
$Comp
L power:+5VA #PWR?
U 1 1 60CD6EC0
P 3900 2300
F 0 "#PWR?" H 3900 2150 50  0001 C CNN
F 1 "+5VA" V 3915 2428 50  0000 L CNN
F 2 "" H 3900 2300 50  0001 C CNN
F 3 "" H 3900 2300 50  0001 C CNN
	1    3900 2300
	0    1    1    0   
$EndComp
Wire Wire Line
	3900 2300 3800 2300
Wire Bus Line
	8850 1400 8850 2500
$EndSCHEMATC