EESchema Schematic File Version 4
LIBS:adc-dac-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 6
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L shimatta_adc:AD1974 U?
U 1 1 5B68D566
P 5100 5900
F 0 "U?" H 5800 10687 60  0000 C CNN
F 1 "AD1974" H 5800 10581 60  0000 C CNN
F 2 "" H 5550 9200 60  0000 C CNN
F 3 "" H 5550 9200 60  0000 C CNN
	1    5100 5900
	1    0    0    -1  
$EndComp
$Sheet
S 7050 1300 700  1200
U 5B68D665
F0 "input-amps" 50
F1 "input-amps.sch" 50
F2 "CH1+" O L 7050 1400 50 
F3 "CH1-" O L 7050 1500 50 
F4 "CH2+" O L 7050 1700 50 
F5 "CH2-" O L 7050 1800 50 
F6 "CH3+" O L 7050 2000 50 
F7 "CH3-" O L 7050 2100 50 
F8 "CH4+" O L 7050 2300 50 
F9 "CH4-" O L 7050 2400 50 
F10 "CM" I R 7750 2400 50 
$EndSheet
Wire Wire Line
	6700 2300 7050 2300
Wire Wire Line
	7050 2400 6700 2400
Wire Wire Line
	6700 2100 7050 2100
Wire Wire Line
	7050 2000 6700 2000
Wire Wire Line
	6700 1800 7050 1800
Wire Wire Line
	7050 1700 6700 1700
Wire Wire Line
	6700 1500 7050 1500
Wire Wire Line
	7050 1400 6700 1400
Wire Wire Line
	4900 2050 3650 2050
Text HLabel 3650 2050 0    50   Input ~ 0
MCLK
NoConn ~ 4900 2200
Wire Wire Line
	4900 1400 4150 1400
$Comp
L Device:R R?
U 1 1 5B2153D3
P 4150 1200
F 0 "R?" H 4220 1246 50  0000 L CNN
F 1 "5k" H 4220 1155 50  0000 L CNN
F 2 "" V 4080 1200 50  0001 C CNN
F 3 "~" H 4150 1200 50  0001 C CNN
	1    4150 1200
	1    0    0    -1  
$EndComp
Wire Wire Line
	4150 1350 4150 1400
Connection ~ 4150 1400
Wire Wire Line
	4150 1400 3650 1400
Wire Wire Line
	4150 1050 4150 1000
Wire Wire Line
	4150 1000 4450 1000
Wire Wire Line
	4450 1000 4450 1150
$Comp
L power:GND #PWR?
U 1 1 5B215749
P 4450 1150
F 0 "#PWR?" H 4450 900 50  0001 C CNN
F 1 "GND" H 4455 977 50  0000 C CNN
F 2 "" H 4450 1150 50  0001 C CNN
F 3 "" H 4450 1150 50  0001 C CNN
	1    4450 1150
	1    0    0    -1  
$EndComp
Text HLabel 3650 1400 0    50   Input ~ 0
PU~RST
Text HLabel 3650 1550 0    50   Input ~ 0
CIN
Text HLabel 3650 1650 0    50   Input ~ 0
COUT
Text HLabel 3650 1750 0    50   Input ~ 0
CCLK
Text HLabel 3650 1850 0    50   Input ~ 0
~CLATCH
Wire Wire Line
	3650 1550 4900 1550
Wire Wire Line
	4900 1650 3650 1650
Wire Wire Line
	3650 1750 4900 1750
Wire Wire Line
	4900 1850 3650 1850
$Comp
L Device:C C?
U 1 1 5B216AF3
P 2500 4500
F 0 "C?" H 2615 4546 50  0000 L CNN
F 1 "39n" H 2615 4455 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2538 4350 50  0001 C CNN
F 3 "~" H 2500 4500 50  0001 C CNN
	1    2500 4500
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5B216AFA
P 2500 4900
F 0 "R?" H 2570 4946 50  0000 L CNN
F 1 "3k3" H 2570 4855 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 2430 4900 50  0001 C CNN
F 3 "~" H 2500 4900 50  0001 C CNN
	1    2500 4900
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B216B01
P 2950 4700
F 0 "C?" H 3065 4746 50  0000 L CNN
F 1 "2n2" H 3065 4655 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 2988 4550 50  0001 C CNN
F 3 "~" H 2950 4700 50  0001 C CNN
	1    2950 4700
	1    0    0    -1  
$EndComp
Wire Wire Line
	2500 4350 2500 4300
Wire Wire Line
	2500 4300 2950 4300
Wire Wire Line
	2950 4300 2950 4550
Wire Wire Line
	2950 4850 2950 5100
Wire Wire Line
	2950 5100 2500 5100
Wire Wire Line
	2500 5050 2500 5100
Wire Wire Line
	2500 4650 2500 4750
Wire Wire Line
	2950 5100 3150 5100
Connection ~ 2950 5100
Wire Wire Line
	4550 5100 4550 5000
Wire Wire Line
	4550 4700 4900 4700
Wire Wire Line
	4550 4800 4900 4800
Connection ~ 4550 4800
Wire Wire Line
	4550 4800 4550 4700
Wire Wire Line
	4550 4900 4900 4900
Connection ~ 4550 4900
Wire Wire Line
	4550 4900 4550 4800
Wire Wire Line
	4550 5000 4900 5000
Connection ~ 4550 5000
Wire Wire Line
	4550 5000 4550 4900
Wire Wire Line
	4900 5250 4800 5250
$Comp
L power:GND #PWR?
U 1 1 5B219C70
P 4800 6150
F 0 "#PWR?" H 4800 5900 50  0001 C CNN
F 1 "GND" H 4805 5977 50  0000 C CNN
F 2 "" H 4800 6150 50  0001 C CNN
F 3 "" H 4800 6150 50  0001 C CNN
	1    4800 6150
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 5250 4800 5350
Wire Wire Line
	4900 5650 4800 5650
Connection ~ 4800 5650
Wire Wire Line
	4900 5550 4800 5550
Connection ~ 4800 5550
Wire Wire Line
	4800 5550 4800 5650
Wire Wire Line
	4900 5450 4800 5450
Connection ~ 4800 5450
Wire Wire Line
	4800 5450 4800 5550
Wire Wire Line
	4900 5350 4800 5350
Connection ~ 4800 5350
Wire Wire Line
	4800 5350 4800 5450
Wire Wire Line
	2950 4300 4900 4300
Wire Wire Line
	4900 4300 4900 4050
Connection ~ 2950 4300
Wire Wire Line
	1700 3950 1700 4350
Wire Wire Line
	1700 3950 4900 3950
$Comp
L Device:C C?
U 1 1 5B21E0DD
P 1700 4500
F 0 "C?" H 1815 4546 50  0000 L CNN
F 1 "100n" H 1815 4455 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1738 4350 50  0001 C CNN
F 3 "~" H 1700 4500 50  0001 C CNN
	1    1700 4500
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B21E1C0
P 1300 4500
F 0 "C?" H 1415 4546 50  0000 L CNN
F 1 "10u" H 1415 4455 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 1338 4350 50  0001 C CNN
F 3 "~" H 1300 4500 50  0001 C CNN
	1    1300 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 4350 1300 3950
Wire Wire Line
	1300 3950 1700 3950
Connection ~ 1700 3950
Wire Wire Line
	1300 4650 1300 4800
Wire Wire Line
	1300 4800 1500 4800
Wire Wire Line
	1700 4800 1700 4650
Wire Wire Line
	1500 4800 1500 5000
Connection ~ 1500 4800
Wire Wire Line
	1500 4800 1700 4800
$Comp
L power:GND #PWR?
U 1 1 5B220ACB
P 1500 5000
F 0 "#PWR?" H 1500 4750 50  0001 C CNN
F 1 "GND" H 1505 4827 50  0000 C CNN
F 2 "" H 1500 5000 50  0001 C CNN
F 3 "" H 1500 5000 50  0001 C CNN
	1    1500 5000
	1    0    0    -1  
$EndComp
Text HLabel 3650 2550 0    50   BiDi ~ 0
LRCLK
Text HLabel 3650 2650 0    50   BiDi ~ 0
BLCK
Text HLabel 3650 2750 0    50   Output ~ 0
DATA1
Text HLabel 3650 2850 0    50   Output ~ 0
DATA2
Wire Wire Line
	3650 2850 4900 2850
Wire Wire Line
	4900 2750 3650 2750
Wire Wire Line
	3650 2650 4900 2650
Wire Wire Line
	4900 2550 3650 2550
NoConn ~ 4900 3100
NoConn ~ 4900 3200
NoConn ~ 4900 3300
NoConn ~ 4900 3400
Wire Wire Line
	6700 5000 6800 5000
Text HLabel 7500 5000 2    50   Input ~ 0
3V3
$Comp
L Device:C C?
U 1 1 5B22BC43
P 6800 5200
F 0 "C?" H 6915 5246 50  0000 L CNN
F 1 "1u" H 6915 5155 50  0000 L CNN
F 2 "" H 6838 5050 50  0001 C CNN
F 3 "~" H 6800 5200 50  0001 C CNN
	1    6800 5200
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B22BDA9
P 7200 5200
F 0 "C?" H 7315 5246 50  0000 L CNN
F 1 "100n" H 7315 5155 50  0000 L CNN
F 2 "" H 7238 5050 50  0001 C CNN
F 3 "~" H 7200 5200 50  0001 C CNN
	1    7200 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	6800 5350 6800 5400
Wire Wire Line
	6800 5550 6700 5550
Wire Wire Line
	6800 5550 6800 5650
Wire Wire Line
	6800 5650 6700 5650
Connection ~ 6800 5550
Wire Wire Line
	6800 5650 6800 5750
Connection ~ 6800 5650
$Comp
L power:GND #PWR?
U 1 1 5B22F8E3
P 6800 5750
F 0 "#PWR?" H 6800 5500 50  0001 C CNN
F 1 "GND" H 6805 5577 50  0000 C CNN
F 2 "" H 6800 5750 50  0001 C CNN
F 3 "" H 6800 5750 50  0001 C CNN
	1    6800 5750
	1    0    0    -1  
$EndComp
Wire Wire Line
	7200 5400 7200 5350
Wire Wire Line
	6800 5400 7200 5400
Connection ~ 6800 5400
Wire Wire Line
	6800 5400 6800 5550
Wire Wire Line
	6800 5050 6800 5000
Connection ~ 6800 5000
Wire Wire Line
	6800 5000 7200 5000
Wire Wire Line
	7200 5050 7200 5000
Connection ~ 7200 5000
Wire Wire Line
	7200 5000 7500 5000
Wire Wire Line
	3150 5100 3150 5650
Wire Wire Line
	3150 5650 2800 5650
Connection ~ 3150 5100
Wire Wire Line
	3150 5100 4550 5100
$Comp
L Device:L L?
U 1 1 5B23695E
P 1250 5650
F 0 "L?" V 1440 5650 50  0000 C CNN
F 1 "22u" V 1349 5650 50  0000 C CNN
F 2 "" H 1250 5650 50  0001 C CNN
F 3 "~" H 1250 5650 50  0001 C CNN
	1    1250 5650
	0    -1   -1   0   
$EndComp
$Comp
L Device:CP C?
U 1 1 5B236A42
P 1600 5850
F 0 "C?" H 1718 5896 50  0000 L CNN
F 1 "22u" H 1718 5805 50  0000 L CNN
F 2 "" H 1638 5700 50  0001 C CNN
F 3 "~" H 1600 5850 50  0001 C CNN
	1    1600 5850
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B236AF6
P 2050 5850
F 0 "C?" H 2165 5896 50  0000 L CNN
F 1 "1u" H 2165 5805 50  0000 L CNN
F 2 "" H 2088 5700 50  0001 C CNN
F 3 "~" H 2050 5850 50  0001 C CNN
	1    2050 5850
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B236B6A
P 2400 5850
F 0 "C?" H 2515 5896 50  0000 L CNN
F 1 "100n" H 2515 5805 50  0000 L CNN
F 2 "" H 2438 5700 50  0001 C CNN
F 3 "~" H 2400 5850 50  0001 C CNN
	1    2400 5850
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B236C52
P 2800 5850
F 0 "C?" H 2915 5896 50  0000 L CNN
F 1 "100n" H 2915 5805 50  0000 L CNN
F 2 "" H 2838 5700 50  0001 C CNN
F 3 "~" H 2800 5850 50  0001 C CNN
	1    2800 5850
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B236C92
P 3200 5850
F 0 "C?" H 3315 5896 50  0000 L CNN
F 1 "100n" H 3315 5805 50  0000 L CNN
F 2 "" H 3238 5700 50  0001 C CNN
F 3 "~" H 3200 5850 50  0001 C CNN
	1    3200 5850
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5B236CD8
P 3600 5850
F 0 "C?" H 3715 5896 50  0000 L CNN
F 1 "100n" H 3715 5805 50  0000 L CNN
F 2 "" H 3638 5700 50  0001 C CNN
F 3 "~" H 3600 5850 50  0001 C CNN
	1    3600 5850
	1    0    0    -1  
$EndComp
Wire Wire Line
	3150 5650 3200 5650
Wire Wire Line
	3600 5650 3600 5700
Connection ~ 3150 5650
Wire Wire Line
	3200 5650 3200 5700
Connection ~ 3200 5650
Wire Wire Line
	3200 5650 3600 5650
Wire Wire Line
	2800 5650 2800 5700
Connection ~ 2800 5650
Wire Wire Line
	2800 5650 2400 5650
Wire Wire Line
	2400 5650 2400 5700
Connection ~ 2400 5650
Wire Wire Line
	2400 5650 2050 5650
Wire Wire Line
	2050 5650 2050 5700
Connection ~ 2050 5650
Wire Wire Line
	2050 5650 1600 5650
Wire Wire Line
	1600 5700 1600 5650
Connection ~ 1600 5650
Wire Wire Line
	1600 5650 1400 5650
Text HLabel 1100 5650 0    50   Input ~ 0
3V3ANALOG
Wire Wire Line
	4800 5650 4800 6050
Wire Wire Line
	4800 6050 3600 6050
Wire Wire Line
	1600 6050 1600 6000
Connection ~ 4800 6050
Wire Wire Line
	4800 6050 4800 6150
Wire Wire Line
	2050 6000 2050 6050
Connection ~ 2050 6050
Wire Wire Line
	2050 6050 1600 6050
Wire Wire Line
	2400 6000 2400 6050
Connection ~ 2400 6050
Wire Wire Line
	2400 6050 2050 6050
Wire Wire Line
	2800 6000 2800 6050
Connection ~ 2800 6050
Wire Wire Line
	2800 6050 2400 6050
Wire Wire Line
	3200 6050 3200 6000
Connection ~ 3200 6050
Wire Wire Line
	3200 6050 2800 6050
Wire Wire Line
	3600 6000 3600 6050
Connection ~ 3600 6050
Wire Wire Line
	3600 6050 3200 6050
Wire Wire Line
	4900 3850 4350 3850
Text Label 4350 3850 0    50   ~ 0
CM
Wire Wire Line
	7750 2400 8000 2400
$Comp
L Device:C C?
U 1 1 5B25ACF1
P 8000 2650
F 0 "C?" H 8115 2696 50  0000 L CNN
F 1 "100n" H 8115 2605 50  0000 L CNN
F 2 "" H 8038 2500 50  0001 C CNN
F 3 "~" H 8000 2650 50  0001 C CNN
	1    8000 2650
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C?
U 1 1 5B25AE66
P 8450 2650
F 0 "C?" H 8568 2696 50  0000 L CNN
F 1 "47u" H 8568 2605 50  0000 L CNN
F 2 "" H 8488 2500 50  0001 C CNN
F 3 "~" H 8450 2650 50  0001 C CNN
	1    8450 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	8000 2500 8000 2400
Connection ~ 8000 2400
Wire Wire Line
	8000 2400 8450 2400
Wire Wire Line
	8450 2500 8450 2400
Connection ~ 8450 2400
Wire Wire Line
	8450 2800 8450 2850
Wire Wire Line
	8450 2850 8250 2850
Wire Wire Line
	8000 2850 8000 2800
Wire Wire Line
	8250 2850 8250 3000
Connection ~ 8250 2850
Wire Wire Line
	8250 2850 8000 2850
$Comp
L power:GND #PWR?
U 1 1 5B267EAF
P 8250 3000
F 0 "#PWR?" H 8250 2750 50  0001 C CNN
F 1 "GND" H 8255 2827 50  0000 C CNN
F 2 "" H 8250 3000 50  0001 C CNN
F 3 "" H 8250 3000 50  0001 C CNN
	1    8250 3000
	1    0    0    -1  
$EndComp
Wire Wire Line
	8450 2400 8900 2400
Text Label 8900 2400 2    50   ~ 0
CM
$EndSCHEMATC