EESchema Schematic File Version 2  date Mit 16 Mai 2012 03:53:31 CEST
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:special
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:mur-sat
LIBS:idm-cache
EELAYER 24  0
EELAYER END
$Descr A4 11700 8267
Sheet 1 1
Title "IDM"
Date "16 may 2012"
Rev "2"
Comp "mur.sat - A Space Art Project"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Connection ~ 2250 4750
Wire Wire Line
	2250 4350 2250 4950
Wire Wire Line
	2250 4950 2750 4950
Wire Wire Line
	2750 4950 2750 4900
Wire Wire Line
	2300 2550 2250 2550
Wire Wire Line
	2250 2550 2250 2850
Wire Wire Line
	2250 2850 3450 2850
Connection ~ 3450 2350
Wire Wire Line
	3450 2850 3450 2350
Wire Wire Line
	1050 4550 1050 4450
Wire Wire Line
	1300 4550 1300 4500
Connection ~ 1300 3950
Wire Wire Line
	1300 4000 1300 3900
Wire Wire Line
	1700 4350 1600 4350
Wire Wire Line
	3400 4150 3550 4150
Wire Wire Line
	3550 2350 3400 2350
Wire Wire Line
	5050 5400 5050 5300
Wire Wire Line
	5050 5300 9150 5300
Wire Wire Line
	5100 2300 5100 2350
Wire Wire Line
	5100 2350 5350 2350
Connection ~ 5350 2350
Wire Wire Line
	3250 6050 3250 6100
Wire Wire Line
	3250 6100 3150 6100
Wire Wire Line
	5300 5850 5300 5900
Wire Wire Line
	5550 5300 5550 5700
Wire Wire Line
	5550 5700 5650 5700
Connection ~ 6800 6600
Wire Wire Line
	5550 6600 6900 6600
Connection ~ 9200 6100
Wire Wire Line
	9250 6100 9150 6100
Wire Wire Line
	9200 6600 9200 6550
Connection ~ 8600 6100
Wire Wire Line
	8650 6100 8250 6100
Connection ~ 8300 6100
Wire Wire Line
	7700 6600 7700 6550
Connection ~ 7700 6100
Wire Wire Line
	7700 6150 7700 6100
Wire Wire Line
	9750 5550 9750 5500
Wire Wire Line
	10000 5550 10000 5500
Wire Wire Line
	9750 6250 9750 6300
Wire Wire Line
	7650 6100 7750 6100
Wire Wire Line
	8300 6600 8300 6550
Wire Wire Line
	8300 6100 8300 6150
Wire Wire Line
	8650 6600 8600 6600
Wire Wire Line
	8600 6600 8600 6100
Wire Wire Line
	9200 6150 9200 6100
Wire Wire Line
	10400 6600 10400 5900
Wire Wire Line
	10400 5900 10350 5900
Connection ~ 9200 6600
Connection ~ 5600 6600
Wire Wire Line
	6750 5900 6800 5900
Wire Wire Line
	6800 5900 6800 6600
Wire Wire Line
	5600 6100 5600 6150
Wire Wire Line
	5000 6100 5000 6600
Wire Wire Line
	5000 6600 5050 6600
Wire Wire Line
	4700 6100 4700 6150
Connection ~ 10200 4300
Wire Wire Line
	10050 4300 10400 4300
Connection ~ 9400 4300
Wire Wire Line
	9550 4300 9350 4300
Wire Wire Line
	9300 1300 9400 1300
Wire Wire Line
	9400 1300 9400 1250
Wire Wire Line
	5700 3300 5700 3250
Connection ~ 5950 2800
Wire Wire Line
	5950 2850 5950 2800
Wire Wire Line
	8450 4300 8550 4300
Wire Wire Line
	5500 2800 6200 2800
Wire Wire Line
	5500 1900 6200 1900
Wire Wire Line
	9250 3250 9250 3300
Wire Wire Line
	8900 2700 9300 2700
Wire Wire Line
	8100 3600 8100 3550
Wire Wire Line
	8100 3550 8150 3550
Wire Wire Line
	8150 3450 8050 3450
Wire Wire Line
	6850 4450 6750 4450
Wire Wire Line
	6850 4250 6750 4250
Wire Wire Line
	6800 4000 6800 4050
Wire Wire Line
	6800 4050 6850 4050
Wire Wire Line
	7300 2700 7200 2700
Wire Wire Line
	7300 2400 7200 2400
Wire Wire Line
	7300 2300 7200 2300
Wire Wire Line
	7200 2100 7300 2100
Wire Wire Line
	9000 2500 8900 2500
Wire Wire Line
	8900 2200 9000 2200
Wire Wire Line
	10300 1600 10100 1600
Wire Wire Line
	10250 1750 10250 1700
Wire Wire Line
	10250 1700 10300 1700
Wire Wire Line
	10350 3150 10250 3150
Wire Wire Line
	10350 2950 10250 2950
Wire Wire Line
	10350 2750 10250 2750
Wire Wire Line
	10350 2550 10300 2550
Wire Wire Line
	10300 2550 10300 2500
Connection ~ 5950 1900
Wire Wire Line
	5700 1950 5700 1900
Wire Wire Line
	5350 3600 5350 3650
Wire Wire Line
	5950 2400 5950 2350
Wire Wire Line
	2800 3800 2800 3750
Wire Wire Line
	3050 3800 3050 3750
Wire Wire Line
	1300 2150 1150 2150
Wire Wire Line
	1150 2150 1150 2350
Wire Wire Line
	1150 2350 1100 2350
Wire Wire Line
	1950 2750 1950 2850
Connection ~ 1950 2150
Wire Wire Line
	1950 1550 1950 1500
Wire Wire Line
	3050 2000 3050 1950
Connection ~ 7900 1600
Wire Wire Line
	7900 1700 7900 1500
Connection ~ 8300 1600
Wire Wire Line
	8300 1700 8300 1500
Wire Wire Line
	2800 2000 2800 1950
Wire Wire Line
	2800 2750 2800 2700
Wire Wire Line
	2300 2150 1700 2150
Wire Wire Line
	1950 2250 1950 2050
Wire Wire Line
	1100 2550 1150 2550
Wire Wire Line
	1150 2550 1150 2700
Wire Wire Line
	2800 4500 2800 4550
Wire Wire Line
	4700 6600 4700 6550
Wire Wire Line
	4050 6100 4150 6100
Wire Wire Line
	6150 6250 6150 6300
Wire Wire Line
	6400 5550 6400 5500
Wire Wire Line
	6150 5550 6150 5500
Wire Wire Line
	4100 6150 4100 6100
Connection ~ 4100 6100
Wire Wire Line
	4100 6600 4100 6550
Wire Wire Line
	5950 1900 5950 1950
Wire Wire Line
	5700 2350 5700 2400
Wire Wire Line
	5350 1100 5350 1050
Wire Wire Line
	5350 1650 5350 1600
Connection ~ 5700 1900
Wire Wire Line
	10350 3250 10300 3250
Wire Wire Line
	10300 3250 10300 3300
Wire Wire Line
	10250 2850 10350 2850
Wire Wire Line
	10250 3050 10350 3050
Wire Wire Line
	10300 1400 10250 1400
Wire Wire Line
	10100 1500 10300 1500
Wire Wire Line
	9000 2600 8900 2600
Wire Wire Line
	9000 2400 8900 2400
Wire Wire Line
	9000 2100 8900 2100
Wire Wire Line
	7300 2000 7200 2000
Wire Wire Line
	7300 2200 7200 2200
Wire Wire Line
	9000 2300 8900 2300
Wire Wire Line
	8900 2000 9000 2000
Wire Wire Line
	7200 2600 7300 2600
Wire Wire Line
	6750 4150 6850 4150
Wire Wire Line
	6750 4350 6850 4350
Wire Wire Line
	6850 4550 6800 4550
Wire Wire Line
	6800 4550 6800 4600
Wire Wire Line
	8150 3350 8100 3350
Wire Wire Line
	8100 3350 8100 3300
Wire Wire Line
	7550 3450 7500 3450
Wire Wire Line
	9250 2750 9250 2700
Connection ~ 9250 2700
Wire Wire Line
	8550 4200 8450 4200
Wire Wire Line
	8550 4400 8450 4400
Wire Wire Line
	10250 2650 10350 2650
Wire Wire Line
	5700 2850 5700 2800
Connection ~ 5700 2800
Wire Wire Line
	5950 3300 5950 3250
Wire Wire Line
	10300 1300 9600 1300
Wire Wire Line
	9600 1300 9600 1250
Wire Wire Line
	7300 2500 7200 2500
Wire Wire Line
	9350 4200 9400 4200
Wire Wire Line
	9400 4200 9400 4400
Wire Wire Line
	9400 4400 9350 4400
Wire Wire Line
	10200 4400 10200 4300
Wire Wire Line
	10200 4850 10200 4800
Connection ~ 4700 6100
Wire Wire Line
	5050 6100 4650 6100
Connection ~ 5000 6100
Wire Wire Line
	5600 6550 5600 6600
Wire Wire Line
	5650 6100 5550 6100
Connection ~ 5600 6100
Wire Wire Line
	9150 6600 10500 6600
Connection ~ 10400 6600
Wire Wire Line
	5300 5250 5300 5350
Wire Wire Line
	5300 4700 5300 4750
Wire Wire Line
	9250 5700 9150 5700
Connection ~ 5550 5300
Connection ~ 5300 5300
Connection ~ 6800 6100
Wire Wire Line
	7150 6100 6800 6100
Wire Wire Line
	9150 5700 9150 5300
Wire Wire Line
	3550 6100 3450 6100
Wire Wire Line
	3450 6100 3450 6050
Wire Wire Line
	5350 2550 5350 2150
Wire Wire Line
	5350 3050 5350 3100
Wire Wire Line
	4900 2300 4900 2350
Wire Wire Line
	4900 2350 4800 2350
Wire Wire Line
	5050 5800 5050 5900
Wire Wire Line
	2250 4750 2500 4750
Wire Wire Line
	2200 4350 2300 4350
Connection ~ 2250 4350
Wire Wire Line
	1300 3400 1300 3350
Wire Wire Line
	2300 3950 1050 3950
Wire Wire Line
	1050 3950 1050 4050
Wire Wire Line
	3450 4150 3450 4750
Wire Wire Line
	3450 4750 3000 4750
Connection ~ 3450 4150
$Comp
L POT RV?
U 1 1 4FB3052B
P 2750 4750
F 0 "RV?" H 2750 4650 50  0000 C CNN
F 1 "1M0" H 2750 4750 50  0000 C CNN
	1    2750 4750
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR?
U 1 1 4FB3047F
P 1050 4550
F 0 "#PWR?" H 1050 4550 30  0001 C CNN
F 1 "GND" H 1050 4480 30  0001 C CNN
	1    1050 4550
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 4FB3046C
P 1050 4250
F 0 "C?" H 900 4350 50  0000 L CNN
F 1 "1µF" H 850 4150 50  0000 L CNN
	1    1050 4250
	1    0    0    -1  
$EndComp
Text Label 3550 2350 0    60   ~ 0
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$Comp
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U 1 1 4FB30414
P 1300 3350
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F 1 "+3.3V" H 1300 3460 30  0000 C CNN
	1    1300 3350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 4FB3040E
P 1300 4550
F 0 "#PWR?" H 1300 4550 30  0001 C CNN
F 1 "GND" H 1300 4480 30  0001 C CNN
	1    1300 4550
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB30409
P 1300 4250
F 0 "R?" V 1380 4250 50  0000 C CNN
F 1 "470k" V 1300 4250 50  0000 C CNN
	1    1300 4250
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB30406
P 1300 3650
F 0 "R?" V 1380 3650 50  0000 C CNN
F 1 "470k" V 1300 3650 50  0000 C CNN
	1    1300 3650
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB303C8
P 1950 4350
F 0 "R?" V 2030 4350 50  0000 C CNN
F 1 "20k" V 1950 4350 50  0000 C CNN
	1    1950 4350
	0    1    1    0   
$EndComp
Text Label 1600 4350 3    60   ~ 0
PREAMP_OUT
$Comp
L GND #PWR?
U 1 1 4FB2FE0C
P 5050 5900
F 0 "#PWR?" H 5050 5900 30  0001 C CNN
F 1 "GND" H 5050 5830 30  0001 C CNN
	1    5050 5900
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 4FB2FE04
P 5050 5600
F 0 "C?" H 4900 5700 50  0000 L CNN
F 1 "1µF" H 4900 5500 50  0000 L CNN
	1    5050 5600
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P?
U 1 1 4FB2FA8A
P 5000 1950
F 0 "P?" V 4950 1950 40  0000 C CNN
F 1 "TIN" V 5050 1950 40  0000 C CNN
	1    5000 1950
	0    -1   -1   0   
$EndComp
Text Label 4800 2350 2    60   ~ 0
AMP_OUT
$Comp
L CONN_2 P?
U 1 1 4FB2F8C3
P 3350 5700
F 0 "P?" V 3300 5700 40  0000 C CNN
F 1 "FIN" V 3400 5700 40  0000 C CNN
	1    3350 5700
	0    -1   -1   0   
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 4FB2F734
P 5300 4700
F 0 "#PWR?" H 5300 4660 30  0001 C CNN
F 1 "+3.3V" H 5300 4810 30  0000 C CNN
	1    5300 4700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 4FB2F730
P 5300 5900
F 0 "#PWR?" H 5300 5900 30  0001 C CNN
F 1 "GND" H 5300 5830 30  0001 C CNN
	1    5300 5900
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB2F72A
P 5300 5000
F 0 "R?" V 5380 5000 50  0000 C CNN
F 1 "470k" V 5300 5000 50  0000 C CNN
	1    5300 5000
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB2F71F
P 5300 5600
F 0 "R?" V 5380 5600 50  0000 C CNN
F 1 "470k" V 5300 5600 50  0000 C CNN
	1    5300 5600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 4FB2F6FD
P 8300 6600
F 0 "#PWR?" H 8300 6600 30  0001 C CNN
F 1 "GND" H 8300 6530 30  0001 C CNN
	1    8300 6600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 4FB2F6FC
P 7700 6600
F 0 "#PWR?" H 7700 6600 30  0001 C CNN
F 1 "GND" H 7700 6530 30  0001 C CNN
	1    7700 6600
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 4FB2F6FB
P 9200 6350
F 0 "C?" H 9250 6450 50  0000 L CNN
F 1 "150pF" H 9250 6250 50  0000 L CNN
	1    9200 6350
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 4FB2F6FA
P 7700 6350
F 0 "C?" H 7750 6450 50  0000 L CNN
F 1 "47nF" H 7750 6250 50  0000 L CNN
	1    7700 6350
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB2F6F9
P 8900 6100
F 0 "R?" V 8980 6100 50  0000 C CNN
F 1 "130k" V 8900 6100 50  0000 C CNN
	1    8900 6100
	0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 4FB2F6F8
P 7400 6100
F 0 "R?" V 7480 6100 50  0000 C CNN
F 1 "910R" V 7400 6100 50  0000 C CNN
	1    7400 6100
	0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 4FB2F6F7
P 8000 6100
F 0 "R?" V 8080 6100 50  0000 C CNN
F 1 "47k" V 8000 6100 50  0000 C CNN
	1    8000 6100
	0    1    1    0   
$EndComp
$Comp
L C C?
U 1 1 4FB2F6F6
P 8300 6350
F 0 "C?" H 8350 6450 50  0000 L CNN
F 1 "2,2nF" H 8350 6250 50  0000 L CNN
	1    8300 6350
	1    0    0    -1  
$EndComp
Text Label 10000 5500 0    60   ~ 0
FILTER_EN
$Comp
L GND #PWR?
U 1 1 4FB2F6F5
P 9750 6300
F 0 "#PWR?" H 9750 6300 30  0001 C CNN
F 1 "GND" H 9750 6230 30  0001 C CNN
	1    9750 6300
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR?
U 1 1 4FB2F6F4
P 9750 5500
F 0 "#PWR?" H 9750 5460 30  0001 C CNN
F 1 "+3.3V" H 9750 5610 30  0000 C CNN
	1    9750 5500
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U2
U 2 1 4FB2F6F3
P 9750 5900
F 0 "U2" H 9850 5550 60  0000 C CNN
F 1 "MAX9913" H 9950 5650 60  0000 C CNN
	2    9750 5900
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB2F6F2
P 8900 6600
F 0 "R?" V 8980 6600 50  0000 C CNN
F 1 "51k" V 8900 6600 50  0000 C CNN
	1    8900 6600
	0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 4FB2F632
P 5300 6600
F 0 "R?" V 5380 6600 50  0000 C CNN
F 1 "51k" V 5300 6600 50  0000 C CNN
	1    5300 6600
	0    1    1    0   
$EndComp
Text Label 3050 3750 0    60   ~ 0
PWRDWN
$Comp
L GND #PWR?
U 1 1 4FB2F4ED
P 10200 4850
F 0 "#PWR?" H 10200 4850 30  0001 C CNN
F 1 "GND" H 10200 4780 30  0001 C CNN
	1    10200 4850
	1    0    0    -1  
$EndComp
$Comp
L CONN_3X2 P?
U 1 1 4FB2F4D8
P 8950 4350
F 0 "P?" H 8950 4600 50  0000 C CNN
F 1 "ADC_IN" V 8950 4400 40  0000 C CNN
	1    8950 4350
	1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 4FB2F4B0
P 10200 4600
F 0 "C?" H 10250 4700 50  0000 L CNN
F 1 "47nF" H 10250 4500 50  0000 L CNN
	1    10200 4600
	1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 4FB2F4AC
P 9800 4300
F 0 "R?" V 9880 4300 50  0000 C CNN
F 1 "910R" V 9800 4300 50  0000 C CNN
	1    9800 4300
	0    1    1    0   
$EndComp
Text Label 7200 2500 2    60   ~ 0
MCLR
Text Label 3050 1950 0    60   ~ 0
PWRDWN
Text Label 9300 1300 2    60   ~ 0
PWRDWN
$Comp
L CONN_2 P102
U 1 1 4F5ADCF7
P 9500 900
F 0 "P102" V 9450 900 40  0000 C CNN
F 1 "PROG" V 9550 900 40  0000 C CNN
	1    9500 900 
	0    -1   -1   0   
$EndComp
Text Label 10250 2650 2    60   ~ 0
PWRDWN
$Comp
L CONN_8 P105
U 1 1 4F5A4C4E
P 10700 2900
F 0 "P105" V 10650 2900 60  0000 C CNN
F 1 "MPU" V 10750 2900 60  0000 C CNN
	1    10700 2900
	1    0    0    -1  
$EndComp
Text Label 8450 4400 2    60   ~ 0
F2_OUT
Text Label 8450 4200 2    60   ~ 0
AMP_OUT
Text Label 8450 4300 2    60   ~ 0
F1_OUT
$Comp
L TST P104
U 1 1 4F5A06F2
P 6200 2800
F 0 "P104" H 6200 3100 40  0000 C CNN
F 1 "COMP_LOW" H 6200 3050 30  0000 C CNN
	1    6200 2800
	0    1    1    0   
$EndComp
$Comp
L TST P103
U 1 1 4F5A06E6
P 6200 1900
F 0 "P103" H 6200 2200 40  0000 C CNN
F 1 "COMP_HIGH" H 6200 2150 30  0000 C CNN
	1    6200 1900
	0    1    1    0   
$EndComp
Text Label 10500 6600 0    60   ~ 0
F2_OUT
Text Label 6900 6600 0    60   ~ 0
F1_OUT
$Comp
L GND #PWR01
U 1 1 4F56D6E5
P 9250 3300
F 0 "#PWR01" H 9250 3300 30  0001 C CNN
F 1 "GND" H 9250 3230 30  0001 C CNN
	1    9250 3300
	1    0    0    -1  
$EndComp
$Comp
L R R17
U 1 1 4F56D6CE
P 9250 3000
F 0 "R17" V 9330 3000 50  0000 C CNN
F 1 "470k" V 9250 3000 50  0000 C CNN
	1    9250 3000
	1    0    0    -1  
$EndComp
Text Label 9300 2700 0    60   ~ 0
FILTER_EN
Text Label 6750 4450 2    60   ~ 0
RB0
Text Label 6750 4350 2    60   ~ 0
RA7
Text Label 6750 4250 2    60   ~ 0
RA6
Text Label 6750 4150 2    60   ~ 0
CCP4
Text Label 7500 3450 2    60   ~ 0
CCP4
$Comp
L R R13
U 1 1 4F56D5B4
P 7800 3450
F 0 "R13" V 7880 3450 50  0000 C CNN
F 1 "R" V 7800 3450 50  0000 C CNN
	1    7800 3450
	0    -1   -1   0   
$EndComp
$Comp
L +3.3V #PWR02
U 1 1 4F56D5AC
P 8100 3300
F 0 "#PWR02" H 8100 3260 30  0001 C CNN
F 1 "+3.3V" H 8100 3410 30  0000 C CNN
	1    8100 3300
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 4F56D5A4
P 8100 3600
F 0 "#PWR03" H 8100 3600 30  0001 C CNN
F 1 "GND" H 8100 3530 30  0001 C CNN
	1    8100 3600
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR04
U 1 1 4F56D5A1
P 6800 4000
F 0 "#PWR04" H 6800 3960 30  0001 C CNN
F 1 "+3.3V" H 6800 4110 30  0000 C CNN
	1    6800 4000
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR05
U 1 1 4F56D59E
P 6800 4600
F 0 "#PWR05" H 6800 4600 30  0001 C CNN
F 1 "GND" H 6800 4530 30  0001 C CNN
	1    6800 4600
	1    0    0    -1  
$EndComp
$Comp
L CONN_3 K1
U 1 1 4F56D585
P 8500 3450
F 0 "K1" V 8450 3450 50  0000 C CNN
F 1 "SPEAKER" V 8550 3450 40  0000 C CNN
	1    8500 3450
	1    0    0    -1  
$EndComp
$Comp
L CONN_6 P2
U 1 1 4F56D57B
P 7200 4300
F 0 "P2" V 7150 4300 60  0000 C CNN
F 1 "UNUSED" V 7250 4300 60  0000 C CNN
	1    7200 4300
	1    0    0    -1  
$EndComp
Text Label 9000 2000 0    60   ~ 0
RB0
Text Label 7200 2700 2    60   ~ 0
RA7
Text Label 7200 2600 2    60   ~ 0
RA6
Text Label 7200 2400 2    60   ~ 0
CCP4
Text Label 9000 2300 0    60   ~ 0
INT
Text Label 7200 2300 2    60   ~ 0
ADC_IN
Text Label 7200 2200 2    60   ~ 0
AMP_OUT
Text Label 7200 2100 2    60   ~ 0
C2+
Text Label 7200 2000 2    60   ~ 0
C1-
Text Label 9000 2200 0    60   ~ 0
SDO
Text Label 9000 2100 0    60   ~ 0
SDI
Text Label 9000 2400 0    60   ~ 0
SCK
Text Label 9000 2500 0    60   ~ 0
CS
Text Label 9000 2600 0    60   ~ 0
PGC
Text Label 9000 2700 0    60   ~ 0
PGD
Text Label 10100 1600 2    60   ~ 0
PGC
Text Label 10100 1500 2    60   ~ 0
PGD
Text Label 10100 1300 2    60   ~ 0
MCLR
$Comp
L GND #PWR06
U 1 1 4F56CFED
P 10250 1750
F 0 "#PWR06" H 10250 1750 30  0001 C CNN
F 1 "GND" H 10250 1680 30  0001 C CNN
	1    10250 1750
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR07
U 1 1 4F56CFEA
P 10250 1400
F 0 "#PWR07" H 10250 1360 30  0001 C CNN
F 1 "+3.3V" H 10250 1510 30  0000 C CNN
	1    10250 1400
	0    -1   -1   0   
$EndComp
$Comp
L CONN_5 P4
U 1 1 4F56CFE5
P 10700 1500
F 0 "P4" V 10650 1500 50  0000 C CNN
F 1 "ICSP" V 10750 1500 50  0000 C CNN
	1    10700 1500
	1    0    0    1   
$EndComp
Text Label 10250 3150 2    60   ~ 0
SDO
Text Label 10250 3050 2    60   ~ 0
SDI
Text Label 10250 2950 2    60   ~ 0
SCK
Text Label 10250 2850 2    60   ~ 0
CS
Text Label 10250 2750 2    60   ~ 0
INT
$Comp
L +3.3V #PWR08
U 1 1 4F56CF77
P 10300 2500
F 0 "#PWR08" H 10300 2460 30  0001 C CNN
F 1 "+3.3V" H 10300 2610 30  0000 C CNN
	1    10300 2500
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR09
U 1 1 4F56CF70
P 10300 3300
F 0 "#PWR09" H 10300 3300 30  0001 C CNN
F 1 "GND" H 10300 3230 30  0001 C CNN
	1    10300 3300
	1    0    0    -1  
$EndComp
$Comp
L POT RV2
U 1 1 4F56CEE5
P 5350 1900
F 0 "RV2" H 5350 1800 50  0000 C CNN
F 1 "50k" H 5350 1900 50  0000 C CNN
	1    5350 1900
	0    1    1    0   
$EndComp
$Comp
L POT RV3
U 1 1 4F56CE90
P 5350 2800
F 0 "RV3" H 5350 2700 50  0000 C CNN
F 1 "50k" H 5350 2800 50  0000 C CNN
	1    5350 2800
	0    1    1    0   
$EndComp
Text Label 6050 1900 0    60   ~ 0
C1-
Text Label 6050 2800 0    60   ~ 0
C2+
$Comp
L +3.3V #PWR010
U 1 1 4F56CDD2
P 5350 1050
F 0 "#PWR010" H 5350 1010 30  0001 C CNN
F 1 "+3.3V" H 5350 1160 30  0000 C CNN
	1    5350 1050
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR011
U 1 1 4F56CDB6
P 5350 3650
F 0 "#PWR011" H 5350 3650 30  0001 C CNN
F 1 "GND" H 5350 3580 30  0001 C CNN
	1    5350 3650
	1    0    0    -1  
$EndComp
$Comp
L R R10
U 1 1 4F56CDB1
P 5350 3350
F 0 "R10" V 5430 3350 50  0000 C CNN
F 1 "330k" V 5350 3350 50  0000 C CNN
	1    5350 3350
	1    0    0    -1  
$EndComp
$Comp
L C C8
U 1 1 4F56CDAF
P 5700 3050
F 0 "C8" H 5750 3150 50  0000 L CNN
F 1 "5µF" H 5750 2950 50  0000 L CNN
	1    5700 3050
	1    0    0    -1  
$EndComp
$Comp
L C C10
U 1 1 4F56CDAE
P 5950 3050
F 0 "C10" H 6000 3150 50  0000 L CNN
F 1 "5µF" H 6000 2950 50  0000 L CNN
	1    5950 3050
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR012
U 1 1 4F56CDAD
P 5950 3300
F 0 "#PWR012" H 5950 3300 30  0001 C CNN
F 1 "GND" H 5950 3230 30  0001 C CNN
	1    5950 3300
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR013
U 1 1 4F56CDAC
P 5700 3300
F 0 "#PWR013" H 5700 3300 30  0001 C CNN
F 1 "GND" H 5700 3230 30  0001 C CNN
	1    5700 3300
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR014
U 1 1 4F56CD9B
P 5700 2400
F 0 "#PWR014" H 5700 2400 30  0001 C CNN
F 1 "GND" H 5700 2330 30  0001 C CNN
	1    5700 2400
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR015
U 1 1 4F56CD99
P 5950 2400
F 0 "#PWR015" H 5950 2400 30  0001 C CNN
F 1 "GND" H 5950 2330 30  0001 C CNN
	1    5950 2400
	1    0    0    -1  
$EndComp
$Comp
L C C9
U 1 1 4F56CD43
P 5950 2150
F 0 "C9" H 6000 2250 50  0000 L CNN
F 1 "5µF" H 6000 2050 50  0000 L CNN
	1    5950 2150
	1    0    0    -1  
$EndComp
$Comp
L C C7
U 1 1 4F56CD3B
P 5700 2150
F 0 "C7" H 5750 2250 50  0000 L CNN
F 1 "5µF" H 5750 2050 50  0000 L CNN
	1    5700 2150
	1    0    0    -1  
$EndComp
$Comp
L R R9
U 1 1 4F56CD2D
P 5350 1350
F 0 "R9" V 5430 1350 50  0000 C CNN
F 1 "330k" V 5350 1350 50  0000 C CNN
	1    5350 1350
	1    0    0    -1  
$EndComp
Text Label 10400 4300 0    60   ~ 0
ADC_IN
Text Label 3150 6100 2    60   ~ 0
AMP_OUT
$Comp
L MAX9913 U2
U 1 1 4F56CBF6
P 6150 5900
F 0 "U2" H 6250 5550 60  0000 C CNN
F 1 "MAX9913" H 6350 5650 60  0000 C CNN
	1    6150 5900
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR020
U 1 1 4F56CBF5
P 6150 5500
F 0 "#PWR020" H 6150 5460 30  0001 C CNN
F 1 "+3.3V" H 6150 5610 30  0000 C CNN
	1    6150 5500
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR021
U 1 1 4F56CBF4
P 6150 6300
F 0 "#PWR021" H 6150 6300 30  0001 C CNN
F 1 "GND" H 6150 6230 30  0001 C CNN
	1    6150 6300
	1    0    0    -1  
$EndComp
Text Label 6400 5500 0    60   ~ 0
FILTER_EN
$Comp
L C C11
U 1 1 4F56CBF3
P 4700 6350
F 0 "C11" H 4750 6450 50  0000 L CNN
F 1 "2,2nF" H 4750 6250 50  0000 L CNN
	1    4700 6350
	1    0    0    -1  
$EndComp
$Comp
L R R11
U 1 1 4F56CBF2
P 4400 6100
F 0 "R11" V 4480 6100 50  0000 C CNN
F 1 "47k" V 4400 6100 50  0000 C CNN
	1    4400 6100
	0    1    1    0   
$EndComp
$Comp
L R R8
U 1 1 4F56CBF1
P 3800 6100
F 0 "R8" V 3880 6100 50  0000 C CNN
F 1 "910R" V 3800 6100 50  0000 C CNN
	1    3800 6100
	0    1    1    0   
$EndComp
$Comp
L R R12
U 1 1 4F56CBF0
P 5300 6100
F 0 "R12" V 5380 6100 50  0000 C CNN
F 1 "130k" V 5300 6100 50  0000 C CNN
	1    5300 6100
	0    1    1    0   
$EndComp
$Comp
L C C5
U 1 1 4F56CBEF
P 4100 6350
F 0 "C5" H 4150 6450 50  0000 L CNN
F 1 "47nF" H 4150 6250 50  0000 L CNN
	1    4100 6350
	1    0    0    -1  
$EndComp
$Comp
L C C6
U 1 1 4F56CBEE
P 5600 6350
F 0 "C6" H 5650 6450 50  0000 L CNN
F 1 "150pF" H 5650 6250 50  0000 L CNN
	1    5600 6350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR022
U 1 1 4F56CBED
P 4100 6600
F 0 "#PWR022" H 4100 6600 30  0001 C CNN
F 1 "GND" H 4100 6530 30  0001 C CNN
	1    4100 6600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR023
U 1 1 4F56CBEC
P 4700 6600
F 0 "#PWR023" H 4700 6600 30  0001 C CNN
F 1 "GND" H 4700 6530 30  0001 C CNN
	1    4700 6600
	1    0    0    -1  
$EndComp
Text Label 3550 4150 0    60   ~ 0
AMP_OUT
$Comp
L +3.3V #PWR026
U 1 1 4F56CA59
P 1950 1500
F 0 "#PWR026" H 1950 1460 30  0001 C CNN
F 1 "+3.3V" H 1950 1610 30  0000 C CNN
	1    1950 1500
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR028
U 1 1 4F56C942
P 1150 2700
F 0 "#PWR028" H 1150 2700 30  0001 C CNN
F 1 "GND" H 1150 2630 30  0001 C CNN
	1    1150 2700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR029
U 1 1 4F56C940
P 1950 2850
F 0 "#PWR029" H 1950 2850 30  0001 C CNN
F 1 "GND" H 1950 2780 30  0001 C CNN
	1    1950 2850
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 4F56C903
P 1500 2150
F 0 "C2" H 1550 2250 50  0000 L CNN
F 1 "47µF" H 1550 2050 50  0000 L CNN
	1    1500 2150
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 4F56C8FE
P 1950 2500
F 0 "R5" V 2030 2500 50  0000 C CNN
F 1 "470k" V 1950 2500 50  0000 C CNN
	1    1950 2500
	1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 4F56C8E4
P 1950 1800
F 0 "R4" V 2030 1800 50  0000 C CNN
F 1 "470k" V 1950 1800 50  0000 C CNN
	1    1950 1800
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P1
U 1 1 4F56C8DB
P 750 2450
F 0 "P1" V 700 2450 40  0000 C CNN
F 1 "MIC_IN" V 800 2450 40  0000 C CNN
	1    750  2450
	-1   0    0    1   
$EndComp
$Comp
L C C13
U 1 1 4F56B741
P 8100 1600
F 0 "C13" H 8150 1700 50  0000 L CNN
F 1 "100nF" H 8150 1500 50  0000 L CNN
	1    8100 1600
	0    1    1    0   
$EndComp
$Comp
L GND #PWR030
U 1 1 4F56B73F
P 8300 1500
F 0 "#PWR030" H 8300 1500 30  0001 C CNN
F 1 "GND" H 8300 1430 30  0001 C CNN
	1    8300 1500
	-1   0    0    1   
$EndComp
$Comp
L +3.3V #PWR031
U 1 1 4F56B73C
P 7900 1500
F 0 "#PWR031" H 7900 1460 30  0001 C CNN
F 1 "+3.3V" H 7900 1610 30  0000 C CNN
	1    7900 1500
	1    0    0    -1  
$EndComp
$Comp
L PIC16F1847SO U3
U 1 1 4F56B72F
P 8100 2350
F 0 "U3" H 8100 2400 60  0000 C CNN
F 1 "PIC16F1847SO" H 8100 2300 60  0000 C CNN
	1    8100 2350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR032
U 1 1 4F56B6FA
P 2800 2750
F 0 "#PWR032" H 2800 2750 30  0001 C CNN
F 1 "GND" H 2800 2680 30  0001 C CNN
	1    2800 2750
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR033
U 1 1 4F56B6F7
P 2800 4550
F 0 "#PWR033" H 2800 4550 30  0001 C CNN
F 1 "GND" H 2800 4480 30  0001 C CNN
	1    2800 4550
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR034
U 1 1 4F56B6E8
P 2800 3750
F 0 "#PWR034" H 2800 3710 30  0001 C CNN
F 1 "+3.3V" H 2800 3860 30  0000 C CNN
	1    2800 3750
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR035
U 1 1 4F56B6E5
P 2800 1950
F 0 "#PWR035" H 2800 1910 30  0001 C CNN
F 1 "+3.3V" H 2800 2060 30  0000 C CNN
	1    2800 1950
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U1
U 1 1 4F56B59C
P 2800 2350
F 0 "U1" H 2900 2000 60  0000 C CNN
F 1 "MAX9913" H 3000 2100 60  0000 C CNN
	1    2800 2350
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U1
U 2 1 4F56B58F
P 2800 4150
F 0 "U1" H 2900 3800 60  0000 C CNN
F 1 "MAX9913" H 3000 3900 60  0000 C CNN
	2    2800 4150
	1    0    0    -1  
$EndComp
$EndSCHEMATC