polymer-strain-amp/bmi-8ch.sch

EESchema Schematic File Version 2
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:nocko
LIBS:bmi-8ch-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 2
Title ""
Date "2017-03-23"
Rev "AA"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Sheet
S 950  2350 950  750 
U 58D4647E
F0 "channel0-1" 60
F1 "channel0.sch" 60
F2 "OUTPUT0" O R 1900 2450 87 
F3 "OUTPUT1" O R 1900 2800 87 
F4 "GUARD0" O R 1900 2600 87 
F5 "GUARD1" O R 1900 2950 87 
$EndSheet
$Comp
L CONN_01X02 J101
U 1 1 58D57064
P 4700 2800
F 0 "J101" H 4700 2950 50  0000 C CNN
F 1 "External 5V Ref" V 4800 2800 50  0000 C CNN
F 2 "" H 4700 2800 50  0001 C CNN
F 3 "" H 4700 2800 50  0001 C CNN
	1    4700 2800
	-1   0    0    1   
$EndComp
$Comp
L GNDA #PWR104
U 1 1 58D5726E
P 4900 2850
F 0 "#PWR104" H 4900 2600 50  0001 C CNN
F 1 "GNDA" H 4900 2700 50  0000 C CNN
F 2 "" H 4900 2850 50  0001 C CNN
F 3 "" H 4900 2850 50  0001 C CNN
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	1    0    0    -1  
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
	5400 3400 6100 3400
Wire Wire Line
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Wire Wire Line
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$Comp
L GNDA #PWR105
U 1 1 58D57376
P 5650 3100
F 0 "#PWR105" H 5650 2850 50  0001 C CNN
F 1 "GNDA" H 5650 2950 50  0000 C CNN
F 2 "" H 5650 3100 50  0001 C CNN
F 3 "" H 5650 3100 50  0001 C CNN
	1    5650 3100
	1    0    0    -1  
$EndComp
Text GLabel 6400 2850 2    87   Input ~ 0
Vref
Connection ~ 6100 2850
$Comp
L R R101
U 1 1 58D5759A
P 4800 3950
F 0 "R101" V 4880 3950 50  0000 C CNN
F 1 "10k" V 4800 3950 50  0000 C CNN
F 2 "" V 4730 3950 50  0001 C CNN
F 3 "" H 4800 3950 50  0001 C CNN
	1    4800 3950
	1    0    0    1   
$EndComp
$Comp
L R R102
U 1 1 58D57637
P 4800 4350
F 0 "R102" V 4880 4350 50  0000 C CNN
F 1 "10k" V 4800 4350 50  0000 C CNN
F 2 "" V 4730 4350 50  0001 C CNN
F 3 "" H 4800 4350 50  0001 C CNN
	1    4800 4350
	1    0    0    1   
$EndComp
Wire Wire Line
	4800 4100 4800 4200
Wire Wire Line
	4800 4150 5550 4150
Connection ~ 4800 4150
$Comp
L GNDA #PWR107
U 1 1 58D577C3
P 4800 4500
F 0 "#PWR107" H 4800 4250 50  0001 C CNN
F 1 "GNDA" H 4800 4350 50  0000 C CNN
F 2 "" H 4800 4500 50  0001 C CNN
F 3 "" H 4800 4500 50  0001 C CNN
	1    4800 4500
	-1   0    0    -1  
$EndComp
$Comp
L GNDA #PWR108
U 1 1 58D577F5
P 5800 4500
F 0 "#PWR108" H 5800 4250 50  0001 C CNN
F 1 "GNDA" H 5800 4350 50  0000 C CNN
F 2 "" H 5800 4500 50  0001 C CNN
F 3 "" H 5800 4500 50  0001 C CNN
	1    5800 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	5550 4350 5550 4800
Wire Wire Line
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Text GLabel 6650 4250 2    87   Input ~ 0
Vref/2
$Comp
L VBATT #PWR101
U 1 1 58D58272
P 5650 2600
F 0 "#PWR101" H 5650 2450 50  0001 C CNN
F 1 "VBATT" H 5650 2750 50  0000 C CNN
F 2 "" H 5650 2600 50  0000 C CNN
F 3 "" H 5650 2600 50  0000 C CNN
	1    5650 2600
	1    0    0    -1  
$EndComp
Wire Wire Line
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Connection ~ 5150 2750
$Comp
L AD8622 U101
U 1 1 58D5411B
P 5700 2850
F 0 "U101" H 5900 3000 50  0000 L CNN
F 1 "AD8622" H 5750 2700 50  0000 L CNN
F 2 "" H 5700 2850 50  0001 C CNN
F 3 "" H 5700 2850 50  0001 C CNN
	1    5700 2850
	1    0    0    -1  
$EndComp
Text Notes 5900 2550 0    60   ~ 0
Excitation Supply
Text Notes 5900 2600 0    39   ~ 0
Noise not critical; due to INAMP CMRR
$Comp
L AD8538 U103
U 1 1 58D54621
P 5850 4250
F 0 "U103" H 6050 4400 50  0000 L CNN
F 1 "AD8538" H 5900 4100 50  0000 L CNN
F 2 "" H 5850 4250 50  0001 C CNN
F 3 "" H 5850 4250 50  0001 C CNN
	1    5850 4250
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 3750 6400 3750
Wire Wire Line
	5800 3750 5800 4000
Wire Wire Line
	4800 3800 4800 3750
Connection ~ 5150 3750
$Comp
L CP C102
U 1 1 58D54979
P 6400 4000
F 0 "C102" H 6425 4100 50  0000 L CNN
F 1 "1µF" H 6425 3900 50  0000 L CNN
F 2 "" H 6438 3850 50  0001 C CNN
F 3 "" H 6400 4000 50  0001 C CNN
	1    6400 4000
	1    0    0    -1  
$EndComp
$Comp
L CP C103
U 1 1 58D54A48
P 6400 4500
F 0 "C103" H 6425 4600 50  0000 L CNN
F 1 "1µF" H 6425 4400 50  0000 L CNN
F 2 "" H 6438 4350 50  0001 C CNN
F 3 "" H 6400 4500 50  0001 C CNN
	1    6400 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	6400 3750 6400 3850
Connection ~ 5800 3750
Wire Wire Line
	6400 4150 6400 4350
Connection ~ 6400 4250
Wire Wire Line
	6400 4650 6400 4800
Wire Wire Line
	6400 4800 5550 4800
Text Notes 5950 3650 0    60   ~ 0
Virtual Ground Supply
Text Notes 5950 3700 0    39   ~ 0
Noise Transmitted directly to ADC
$EndSCHEMATC