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OpenBCI.sch
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EESchema Schematic File Version 2
LIBS:OpenBCI-rescue
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:ads1299
LIBS:power_supply
LIBS:DataStorage
LIBS:Sensors
LIBS:pic32mx250
LIBS:RFD22301
LIBS:OpenBCI-cache
EELAYER 25 0
EELAYER END
$Descr A3 16535 11693
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Sheet 1 1
Title "OpenBCI KiCAD"
Date ""
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Comment3 "Rev1 work based on OpenBCI Draft_03"
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$EndComp
$Comp
L C C31
U 1 1 565209CF
P 3000 1950
F 0 "C31" V 2950 2000 50 0000 L CNN
F 1 "10uF" V 2950 1700 50 0000 L CNN
F 2 "" H 3038 1800 30 0000 C CNN
F 3 "" H 3000 1950 60 0000 C CNN
1 3000 1950
0 1 1 0
$EndComp
$Comp
L C C33
U 1 1 56520C1B
P 2250 1350
F 0 "C33" H 2275 1450 50 0000 L CNN
F 1 "10uF" H 2275 1250 50 0000 L CNN
F 2 "" H 2288 1200 30 0000 C CNN
F 3 "" H 2250 1350 60 0000 C CNN
1 2250 1350
1 0 0 -1
$EndComp
Text Notes 2600 1100 0 59 ~ 0
VOLTAGE INVERTER
$Comp
L GNDA #PWR010
U 1 1 56521C16
P 2000 1300
F 0 "#PWR010" H 2000 1050 50 0001 C CNN
F 1 "GNDA" H 2000 1150 50 0000 C CNN
F 2 "" H 2000 1300 60 0000 C CNN
F 3 "" H 2000 1300 60 0000 C CNN
1 2000 1300
1 0 0 -1
$EndComp
Text Label 3500 1650 0 60 ~ 0
DVDD
Text Label 2300 2150 0 60 ~ 0
-RAW
$Comp
L LP5907 U5
U 1 1 5652243E
P 3000 2700
F 0 "U5" H 2750 2950 60 0000 C CNN
F 1 "LP5907" H 3000 2450 60 0000 C CNN
F 2 "" H 2250 1700 60 0000 C CNN
F 3 "" H 2250 1700 60 0000 C CNN
1 3000 2700
1 0 0 -1
$EndComp
Text Notes 3100 1850 0 39 ~ 0
Switch this to TCM828
NoConn ~ 3450 2850
$Comp
L C C39
U 1 1 56538D19
P 2150 2700
F 0 "C39" H 2175 2800 50 0000 L CNN
F 1 "2.2uF" H 2175 2600 50 0000 L CNN
F 2 "" H 2188 2550 30 0000 C CNN
F 3 "" H 2150 2700 60 0000 C CNN
1 2150 2700
1 0 0 -1
$EndComp
Text Label 1900 2550 0 60 ~ 0
RAW
Text Label 3650 2550 0 60 ~ 0
DVDD
Text Notes 3700 2450 0 39 ~ 0
3.3V
$Comp
L C C40
U 1 1 56539451
P 3600 2700
F 0 "C40" H 3625 2800 50 0000 L CNN
F 1 "2.2uF" H 3625 2600 50 0000 L CNN
F 2 "" H 3638 2550 30 0000 C CNN
F 3 "" H 3600 2700 60 0000 C CNN
1 3600 2700
1 0 0 -1
$EndComp
$Comp
L GNDA #PWR011
U 1 1 5653962F
P 3000 3200
F 0 "#PWR011" H 3000 2950 50 0001 C CNN
F 1 "GNDA" H 3000 3050 50 0000 C CNN
F 2 "" H 3000 3200 60 0000 C CNN
F 3 "" H 3000 3200 60 0000 C CNN
1 3000 3200
1 0 0 -1
$EndComp
Text Label 1900 3350 0 60 ~ 0
3V_Enable
Text Notes 2600 2350 0 60 ~ 0
+3V REGULATOR
$Comp
L TPS72325 VR1
U 1 1 565390BF
P 5250 1500
F 0 "VR1" H 5000 1800 40 0000 C CNN
F 1 "TPS72325" H 5400 1800 40 0000 C CNN
F 2 "SM" H 5250 1650 30 0000 C CIN
F 3 "" H 5250 1500 60 0000 C CNN
1 5250 1500
1 0 0 -1
$EndComp
$Comp
L C C36
U 1 1 56539142
P 4400 1500
F 0 "C36" H 4425 1600 50 0000 L CNN
F 1 "2.2uF" H 4425 1400 50 0000 L CNN
F 2 "" H 4438 1350 30 0000 C CNN
F 3 "" H 4400 1500 60 0000 C CNN
1 4400 1500
1 0 0 -1
$EndComp
Text Label 4150 1350 0 60 ~ 0
-RAW
$Comp
L GNDA #PWR012
U 1 1 5653961F
P 5250 2000
F 0 "#PWR012" H 5250 1750 50 0001 C CNN
F 1 "GNDA" H 5250 1850 50 0000 C CNN
F 2 "" H 5250 2000 60 0000 C CNN
F 3 "" H 5250 2000 60 0000 C CNN
1 5250 2000
1 0 0 -1
$EndComp
$Comp
L C C30
U 1 1 56539751
P 5800 1650
F 0 "C30" H 5825 1750 50 0000 L CNN
F 1 "0.01uF" H 5825 1550 50 0000 L CNN
F 2 "" H 5838 1500 30 0000 C CNN
F 3 "" H 5800 1650 60 0000 C CNN
1 5800 1650
1 0 0 -1
$EndComp
$Comp
L C C32
U 1 1 56539888
P 6200 1500
F 0 "C32" H 6225 1600 50 0000 L CNN
F 1 "2.2uF" H 6225 1400 50 0000 L CNN
F 2 "" H 6238 1350 30 0000 C CNN
F 3 "" H 6200 1500 60 0000 C CNN
1 6200 1500
1 0 0 -1
$EndComp
$Comp
L C C29
U 1 1 565399B9
P 6600 1500
F 0 "C29" H 6625 1600 50 0000 L CNN
F 1 "10uF" H 6625 1400 50 0000 L CNN
F 2 "" H 6638 1350 30 0000 C CNN
F 3 "" H 6600 1500 60 0000 C CNN
1 6600 1500
1 0 0 -1
$EndComp
Text Label 6800 1350 0 60 ~ 0
AVSS
Text Notes 6850 1450 0 39 ~ 0
-2.5V
Text Notes 4850 1100 0 60 ~ 0
-2.5V REGULATOR
$Comp
L TLV700xx U4
U 1 1 5653B19E
P 5250 2700
F 0 "U4" H 5000 2950 60 0000 C CNN
F 1 "TLV700xx" H 5250 2450 60 0000 C CNN
F 2 "" H 4500 1700 60 0000 C CNN
F 3 "" H 4500 1700 60 0000 C CNN
1 5250 2700
1 0 0 -1
$EndComp
NoConn ~ 5700 2850
$Comp
L C C35
U 1 1 5653B326
P 5900 2700
F 0 "C35" H 5925 2800 50 0000 L CNN
F 1 "2.2uF" H 5925 2600 50 0000 L CNN
F 2 "" H 5938 2550 30 0000 C CNN
F 3 "" H 5900 2700 60 0000 C CNN
1 5900 2700
1 0 0 -1
$EndComp
$Comp
L C C37
U 1 1 5653B45B
P 6250 2700
F 0 "C37" H 6275 2800 50 0000 L CNN
F 1 "10uF" H 6275 2600 50 0000 L CNN
F 2 "" H 6288 2550 30 0000 C CNN
F 3 "" H 6250 2700 60 0000 C CNN
1 6250 2700
1 0 0 -1
$EndComp
$Comp
L GNDA #PWR013
U 1 1 5653B67D
P 5250 3200
F 0 "#PWR013" H 5250 2950 50 0001 C CNN
F 1 "GNDA" H 5250 3050 50 0000 C CNN
F 2 "" H 5250 3200 60 0000 C CNN
F 3 "" H 5250 3200 60 0000 C CNN
1 5250 3200
1 0 0 -1
$EndComp
Text Label 6550 2550 0 60 ~ 0
AVDD
Text Notes 6550 2650 0 39 ~ 0
+2.5V
$Comp
L C C38
U 1 1 5653C0F3
P 4400 2850
F 0 "C38" H 4425 2950 50 0000 L CNN
F 1 "2.2uF" H 4425 2750 50 0000 L CNN
F 2 "" H 4438 2700 30 0000 C CNN
F 3 "" H 4400 2850 60 0000 C CNN
1 4400 2850
1 0 0 -1
$EndComp
Text Label 4150 2550 0 60 ~ 0
DVDD
Text Notes 4900 2350 0 60 ~ 0
+2.5V REGULATOR
Text Notes 3200 3700 0 118 ~ 0
POWER SUPPLY
$Comp
L C C14
U 1 1 56743DA9
P 7400 1450
F 0 "C14" H 7425 1550 50 0000 L CNN
F 1 "1uF" H 7425 1350 50 0000 L CNN
F 2 "" H 7438 1300 50 0000 C CNN
F 3 "" H 7400 1450 50 0000 C CNN
1 7400 1450
1 0 0 -1
$EndComp
$Comp
L C C12
U 1 1 56743E6C
P 7700 1450
F 0 "C12" H 7725 1550 50 0000 L CNN
F 1 ".1uF" H 7725 1350 50 0000 L CNN
F 2 "" H 7738 1300 50 0000 C CNN
F 3 "" H 7700 1450 50 0000 C CNN
1 7700 1450
1 0 0 -1
$EndComp
$Comp
L GNDA #PWR014
U 1 1 56743ECB
P 7550 1700
F 0 "#PWR014" H 7550 1450 50 0001 C CNN
F 1 "GNDA" H 7550 1550 50 0000 C CNN
F 2 "" H 7550 1700 50 0000 C CNN
F 3 "" H 7550 1700 50 0000 C CNN
1 7550 1700
1 0 0 -1
$EndComp
Text Label 7550 1150 0 60 ~ 0
DVDD
$Comp
L C C17
U 1 1 5674463F
P 8150 1450
F 0 "C17" H 8175 1550 50 0000 L CNN
F 1 "1uF" H 8175 1350 50 0000 L CNN
F 2 "" H 8188 1300 50 0000 C CNN
F 3 "" H 8150 1450 50 0000 C CNN
1 8150 1450
1 0 0 -1
$EndComp
$Comp
L C C13
U 1 1 567446CD
P 8450 1450
F 0 "C13" H 8475 1550 50 0000 L CNN
F 1 ".1uF" H 8475 1350 50 0000 L CNN
F 2 "" H 8488 1300 50 0000 C CNN
F 3 "" H 8450 1450 50 0000 C CNN
1 8450 1450
1 0 0 -1
$EndComp
$Comp
L GNDA #PWR015
U 1 1 56744739
P 8300 1700
F 0 "#PWR015" H 8300 1450 50 0001 C CNN
F 1 "GNDA" H 8300 1550 50 0000 C CNN
F 2 "" H 8300 1700 50 0000 C CNN
F 3 "" H 8300 1700 50 0000 C CNN
1 8300 1700
1 0 0 -1
$EndComp
Text Label 8300 1150 0 60 ~ 0
AVDD
$Comp
L C C22
U 1 1 56744EE8
P 7400 2450
F 0 "C22" H 7425 2550 50 0000 L CNN
F 1 "1uF" H 7425 2350 50 0000 L CNN
F 2 "" H 7438 2300 50 0000 C CNN
F 3 "" H 7400 2450 50 0000 C CNN
1 7400 2450
1 0 0 -1
$EndComp
$Comp
L C C24
U 1 1 56745010
P 7700 2450
F 0 "C24" H 7725 2550 50 0000 L CNN
F 1 ".1uF" H 7725 2350 50 0000 L CNN
F 2 "" H 7738 2300 50 0000 C CNN
F 3 "" H 7700 2450 50 0000 C CNN
1 7700 2450
1 0 0 -1
$EndComp
$Comp
L GNDA #PWR016
U 1 1 567450B5
P 7550 2700
F 0 "#PWR016" H 7550 2450 50 0001 C CNN
F 1 "GNDA" H 7550 2550 50 0000 C CNN
F 2 "" H 7550 2700 50 0000 C CNN
F 3 "" H 7550 2700 50 0000 C CNN
1 7550 2700
1 0 0 -1
$EndComp
Text Label 7550 2150 0 60 ~ 0
AVDD
$Comp
L C C27
U 1 1 5674588F
P 8150 2450
F 0 "C27" H 8175 2550 50 0000 L CNN
F 1 "1uF" H 8175 2350 50 0000 L CNN
F 2 "" H 8188 2300 50 0000 C CNN
F 3 "" H 8150 2450 50 0000 C CNN
1 8150 2450
1 0 0 -1
$EndComp
$Comp
L C C28
U 1 1 567458FC
P 8450 2450
F 0 "C28" H 8475 2550 50 0000 L CNN
F 1 ".1uF" H 8475 2350 50 0000 L CNN
F 2 "" H 8488 2300 50 0000 C CNN
F 3 "" H 8450 2450 50 0000 C CNN
1 8450 2450
1 0 0 -1
$EndComp
$Comp
L GNDA #PWR017
U 1 1 56745965
P 8300 2700
F 0 "#PWR017" H 8300 2450 50 0001 C CNN
F 1 "GNDA" H 8300 2550 50 0000 C CNN
F 2 "" H 8300 2700 50 0000 C CNN
F 3 "" H 8300 2700 50 0000 C CNN
1 8300 2700
1 0 0 -1
$EndComp
Text Label 8300 2150 0 60 ~ 0
AVDD
Text Notes 7600 3100 0 60 ~ 0
ADS DECOUPLING
$Comp
L MicroSD CONN1
U 1 1 56748B3E
P 1350 5250
F 0 "CONN1" H 1150 5950 60 0000 C CNN
F 1 "MicroSD" H 1200 4550 60 0000 C CNN
F 2 "" H 1450 5400 60 0000 C CNN
F 3 "" H 1450 5400 60 0000 C CNN
1 1350 5250
1 0 0 -1
$EndComp
Text Label 1600 5250 0 60 ~ 0
MISO
Text Label 1600 4850 0 60 ~ 0
MOSI
Text Label 1600 5050 0 60 ~ 0
SCLK
Text Label 1600 4750 0 60 ~ 0
CS3
NoConn ~ 1550 4650
NoConn ~ 1550 5350
$Comp
L GNDA #PWR018
U 1 1 5674A7D8
P 1900 5900
F 0 "#PWR018" H 1900 5650 50 0001 C CNN
F 1 "GNDA" H 1900 5750 50 0000 C CNN
F 2 "" H 1900 5900 50 0000 C CNN
F 3 "" H 1900 5900 50 0000 C CNN
1 1900 5900
1 0 0 -1
$EndComp
Text Label 1850 4950 0 60 ~ 0
DVDD
$Comp
L C C4
U 1 1 5674AC4C
P 2100 5350
F 0 "C4" H 2125 5450 50 0000 L CNN
F 1 "100uF" H 2125 5250 50 0000 L CNN
F 2 "" H 2138 5200 50 0000 C CNN
F 3 "" H 2100 5350 50 0000 C CNN
1 2100 5350
1 0 0 -1
$EndComp
Text Notes 1050 6400 0 118 ~ 0
SD CARD
$Comp
L ADXL345 U1
U 1 1 5674B889
P 1500 8200
F 0 "U1" H 1900 8950 60 0000 C CNN
F 1 "ADXL345" H 1050 7650 60 0000 C CNN
F 2 "" H 1500 8200 60 0000 C CNN
F 3 "" H 1500 8200 60 0000 C CNN
1 1500 8200
1 0 0 -1
$EndComp
Text Label 2250 7950 0 60 ~ 0
SCLK
Text Label 2250 8150 0 60 ~ 0
MISO
Text Label 2250 8050 0 60 ~ 0
MOSI
Text Label 2250 8350 0 60 ~ 0
INT1
NoConn ~ 2150 8250
Text Label 2250 8450 0 60 ~ 0
CS4
$Comp
L GNDA #PWR019
U 1 1 5674C503
P 1450 8950
F 0 "#PWR019" H 1450 8700 50 0001 C CNN