path: root/hardware/idm/idm.sch

EESchema Schematic File Version 2  date Mit 07 Mär 2012 13:52:19 CET
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
EELAYER 25  0
EELAYER END
$Descr A4 11700 8267
encoding utf-8
Sheet 1 1
Title ""
Date "7 mar 2012"
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Label 10650 5150 0    60   ~ 0
F3_OUT
Text Label 7450 5150 0    60   ~ 0
F2_OUT
Text Label 4250 5150 0    60   ~ 0
F1_OUT
Wire Wire Line
	9350 3200 9350 3250
Wire Wire Line
	9400 2650 9000 2650
Wire Wire Line
	7500 4000 7500 3950
Wire Wire Line
	7500 3950 7550 3950
Wire Wire Line
	7550 3850 7450 3850
Wire Wire Line
	8700 3950 8600 3950
Wire Wire Line
	8700 3750 8600 3750
Wire Wire Line
	8650 3500 8650 3550
Wire Wire Line
	8650 3550 8700 3550
Wire Wire Line
	7400 2650 7300 2650
Wire Wire Line
	7400 2350 7300 2350
Wire Wire Line
	7400 2250 7300 2250
Wire Wire Line
	7300 2050 7400 2050
Connection ~ 5450 2800
Wire Wire Line
	5250 2800 5800 2800
Wire Wire Line
	9100 2450 9000 2450
Wire Wire Line
	9000 2150 9100 2150
Wire Wire Line
	10350 1500 10150 1500
Wire Wire Line
	10350 1200 10150 1200
Wire Wire Line
	10300 1650 10300 1600
Wire Wire Line
	10300 1600 10350 1600
Wire Wire Line
	10350 2900 10250 2900
Wire Wire Line
	10350 2700 10250 2700
Wire Wire Line
	10350 2500 10250 2500
Wire Wire Line
	10350 2400 10300 2400
Wire Wire Line
	10300 2400 10300 2350
Connection ~ 5700 1950
Wire Wire Line
	5800 1950 5250 1950
Wire Wire Line
	5450 1950 5450 2000
Wire Wire Line
	5450 2800 5450 3000
Wire Wire Line
	5700 3400 5700 3700
Wire Wire Line
	5100 3650 5100 3700
Wire Wire Line
	5700 2450 5700 2400
Wire Wire Line
	1000 5850 1050 5850
Wire Wire Line
	8000 6350 8000 6300
Wire Wire Line
	9450 6600 10600 6600
Wire Wire Line
	9450 6600 9450 6250
Wire Wire Line
	9200 5850 9200 5900
Connection ~ 8600 5850
Wire Wire Line
	8600 5850 8600 5750
Connection ~ 8000 5850
Wire Wire Line
	8000 5850 8000 5900
Wire Wire Line
	9950 5700 9950 5650
Wire Wire Line
	10200 5700 10200 5650
Wire Wire Line
	9950 6400 9950 6450
Wire Wire Line
	8050 5850 7950 5850
Wire Wire Line
	8650 5850 8550 5850
Wire Wire Line
	9150 5850 9450 5850
Connection ~ 9200 5850
Wire Wire Line
	8600 5350 8600 5150
Wire Wire Line
	8600 5150 10600 5150
Wire Wire Line
	10600 5150 10600 6600
Connection ~ 10600 6050
Wire Wire Line
	9200 6350 9200 6300
Connection ~ 4200 5850
Wire Wire Line
	4250 5850 4200 5850
Wire Wire Line
	1600 6350 1600 6300
Wire Wire Line
	4200 6050 4150 6050
Wire Wire Line
	3050 6600 4200 6600
Wire Wire Line
	3050 6600 3050 6250
Wire Wire Line
	2800 5850 2800 5900
Connection ~ 2200 5850
Wire Wire Line
	2200 5850 2200 5750
Connection ~ 1600 5850
Wire Wire Line
	1600 5850 1600 5900
Wire Wire Line
	3550 5700 3550 5650
Wire Wire Line
	3800 5700 3800 5650
Wire Wire Line
	1950 2300 1800 2300
Wire Wire Line
	1800 2300 1800 2500
Wire Wire Line
	1800 2500 1750 2500
Wire Wire Line
	2600 2900 2600 3000
Connection ~ 2600 2300
Wire Wire Line
	2600 1700 2600 1650
Wire Wire Line
	4200 4150 4200 4200
Wire Wire Line
	4200 3050 4200 3100
Wire Wire Line
	4200 2500 4200 2550
Wire Wire Line
	3700 2150 3700 2100
Connection ~ 8000 1550
Wire Wire Line
	8000 1450 8000 1650
Connection ~ 8400 1550
Wire Wire Line
	8400 1450 8400 1650
Wire Wire Line
	3450 2150 3450 2100
Wire Wire Line
	3450 2900 3450 2850
Wire Wire Line
	4200 3600 4200 3650
Wire Wire Line
	4050 3350 2850 3350
Wire Wire Line
	2850 3350 2850 2700
Wire Wire Line
	2850 2700 2950 2700
Wire Wire Line
	2350 2300 2950 2300
Wire Wire Line
	2600 2200 2600 2400
Wire Wire Line
	1750 2700 1800 2700
Wire Wire Line
	1800 2700 1800 2850
Connection ~ 4200 2500
Wire Wire Line
	3550 6400 3550 6450
Wire Wire Line
	1650 5850 1550 5850
Wire Wire Line
	2250 5850 2150 5850
Wire Wire Line
	2750 5850 3050 5850
Connection ~ 2800 5850
Wire Wire Line
	2200 5350 2200 5150
Wire Wire Line
	2200 5150 4200 5150
Wire Wire Line
	4200 5150 4200 6600
Connection ~ 4200 6050
Wire Wire Line
	2800 6350 2800 6300
Wire Wire Line
	6000 6350 6000 6300
Connection ~ 7400 6050
Wire Wire Line
	7400 5150 7400 6600
Wire Wire Line
	7400 5150 5400 5150
Wire Wire Line
	5400 5150 5400 5350
Connection ~ 6000 5850
Wire Wire Line
	5950 5850 6250 5850
Wire Wire Line
	5450 5850 5350 5850
Wire Wire Line
	4850 5850 4750 5850
Wire Wire Line
	6750 6400 6750 6450
Wire Wire Line
	7000 5700 7000 5650
Wire Wire Line
	6750 5700 6750 5650
Wire Wire Line
	4800 5900 4800 5850
Connection ~ 4800 5850
Wire Wire Line
	5400 5750 5400 5850
Connection ~ 5400 5850
Wire Wire Line
	6000 5900 6000 5850
Wire Wire Line
	6250 6250 6250 6600
Wire Wire Line
	6250 6600 7400 6600
Wire Wire Line
	7350 6050 7400 6050
Wire Wire Line
	4800 6350 4800 6300
Wire Wire Line
	7400 5850 7450 5850
Connection ~ 7400 5850
Wire Wire Line
	10550 6050 10700 6050
Wire Wire Line
	5700 1950 5700 2000
Wire Wire Line
	5450 2400 5450 2450
Wire Wire Line
	5100 3150 5100 3050
Wire Wire Line
	5100 1150 5100 1100
Wire Wire Line
	4050 2500 5100 2500
Connection ~ 5100 2500
Wire Wire Line
	5450 3400 5450 3700
Wire Wire Line
	5700 2800 5700 3000
Wire Wire Line
	5100 1700 5100 1650
Connection ~ 5450 1950
Wire Wire Line
	5100 2200 5100 2550
Wire Wire Line
	10350 3000 10300 3000
Wire Wire Line
	10300 3000 10300 3050
Wire Wire Line
	10250 2600 10350 2600
Wire Wire Line
	10250 2800 10350 2800
Wire Wire Line
	10350 1300 10300 1300
Wire Wire Line
	10150 1400 10350 1400
Wire Wire Line
	9100 2550 9000 2550
Wire Wire Line
	7400 2450 7300 2450
Wire Wire Line
	9100 2350 9000 2350
Wire Wire Line
	9100 2050 9000 2050
Connection ~ 5700 2800
Wire Wire Line
	7400 1950 7300 1950
Wire Wire Line
	7400 2150 7300 2150
Wire Wire Line
	9100 2250 9000 2250
Wire Wire Line
	9000 1950 9100 1950
Wire Wire Line
	7300 2550 7400 2550
Wire Wire Line
	8600 3650 8700 3650
Wire Wire Line
	8600 3850 8700 3850
Wire Wire Line
	8700 4050 8650 4050
Wire Wire Line
	8650 4050 8650 4100
Wire Wire Line
	7550 3750 7500 3750
Wire Wire Line
	7500 3750 7500 3700
Wire Wire Line
	6950 3850 6900 3850
Wire Wire Line
	9350 2700 9350 2650
Connection ~ 9350 2650
$Comp
L GND #PWR01
U 1 1 4F56D6E5
P 9350 3250
F 0 "#PWR01" H 9350 3250 30  0001 C CNN
F 1 "GND" H 9350 3180 30  0001 C CNN
	1    9350 3250
	1    0    0    -1  
$EndComp
$Comp
L R R17
U 1 1 4F56D6CE
P 9350 2950
F 0 "R17" V 9430 2950 50  0000 C CNN
F 1 "470k" V 9350 2950 50  0000 C CNN
	1    9350 2950
	1    0    0    -1  
$EndComp
Text Label 9400 2650 0    60   ~ 0
FILTER_EN
Text Label 8600 3950 2    60   ~ 0
RB0
Text Label 8600 3850 2    60   ~ 0
RA7
Text Label 8600 3750 2    60   ~ 0
RA6
Text Label 8600 3650 2    60   ~ 0
CCP4
Text Label 6900 3850 2    60   ~ 0
CCP4
$Comp
L R R13
U 1 1 4F56D5B4
P 7200 3850
F 0 "R13" V 7280 3850 50  0000 C CNN
F 1 "R" V 7200 3850 50  0000 C CNN
	1    7200 3850
	0    -1   -1   0   
$EndComp
$Comp
L +3.3V #PWR02
U 1 1 4F56D5AC
P 7500 3700
F 0 "#PWR02" H 7500 3660 30  0001 C CNN
F 1 "+3.3V" H 7500 3810 30  0000 C CNN
	1    7500 3700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 4F56D5A4
P 7500 4000
F 0 "#PWR03" H 7500 4000 30  0001 C CNN
F 1 "GND" H 7500 3930 30  0001 C CNN
	1    7500 4000
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR04
U 1 1 4F56D5A1
P 8650 3500
F 0 "#PWR04" H 8650 3460 30  0001 C CNN
F 1 "+3.3V" H 8650 3610 30  0000 C CNN
	1    8650 3500
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR05
U 1 1 4F56D59E
P 8650 4100
F 0 "#PWR05" H 8650 4100 30  0001 C CNN
F 1 "GND" H 8650 4030 30  0001 C CNN
	1    8650 4100
	1    0    0    -1  
$EndComp
$Comp
L CONN_3 K1
U 1 1 4F56D585
P 7900 3850
F 0 "K1" V 7850 3850 50  0000 C CNN
F 1 "SPEAKER" V 7950 3850 40  0000 C CNN
	1    7900 3850
	1    0    0    -1  
$EndComp
$Comp
L CONN_6 P2
U 1 1 4F56D57B
P 9050 3800
F 0 "P2" V 9000 3800 60  0000 C CNN
F 1 "UNUSED" V 9100 3800 60  0000 C CNN
	1    9050 3800
	1    0    0    -1  
$EndComp
Text Label 9100 1950 0    60   ~ 0
RB0
Text Label 7300 2650 2    60   ~ 0
RA7
Text Label 7300 2550 2    60   ~ 0
RA6
Text Label 7300 2350 2    60   ~ 0
CCP4
Text Label 9100 2250 0    60   ~ 0
INT
Text Label 7300 2250 2    60   ~ 0
ADC_IN
Text Label 7300 2150 2    60   ~ 0
AMP_OUT
Text Label 7300 2050 2    60   ~ 0
C2+
Text Label 7300 1950 2    60   ~ 0
C1-
Text Label 9100 2150 0    60   ~ 0
SDO
Text Label 9100 2050 0    60   ~ 0
SDI
Text Label 9100 2350 0    60   ~ 0
SCK
Text Label 9100 2450 0    60   ~ 0
CS
Text Label 9100 2550 0    60   ~ 0
PGC
Text Label 9100 2650 0    60   ~ 0
PGD
Text Label 7300 2450 2    60   ~ 0
MCLR
Text Label 10150 1500 2    60   ~ 0
PGC
Text Label 10150 1400 2    60   ~ 0
PGD
Text Label 10150 1200 2    60   ~ 0
MCLR
$Comp
L GND #PWR06
U 1 1 4F56CFED
P 10300 1650
F 0 "#PWR06" H 10300 1650 30  0001 C CNN
F 1 "GND" H 10300 1580 30  0001 C CNN
	1    10300 1650
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR07
U 1 1 4F56CFEA
P 10300 1300
F 0 "#PWR07" H 10300 1260 30  0001 C CNN
F 1 "+3.3V" H 10300 1410 30  0000 C CNN
	1    10300 1300
	0    -1   -1   0   
$EndComp
$Comp
L CONN_5 P4
U 1 1 4F56CFE5
P 10750 1400
F 0 "P4" V 10700 1400 50  0000 C CNN
F 1 "ICSP" V 10800 1400 50  0000 C CNN
	1    10750 1400
	1    0    0    -1  
$EndComp
Text Label 10250 2900 2    60   ~ 0
SDO
Text Label 10250 2800 2    60   ~ 0
SDI
Text Label 10250 2700 2    60   ~ 0
SCK
Text Label 10250 2600 2    60   ~ 0
CS
Text Label 10250 2500 2    60   ~ 0
INT
$Comp
L +3.3V #PWR08
U 1 1 4F56CF77
P 10300 2350
F 0 "#PWR08" H 10300 2310 30  0001 C CNN
F 1 "+3.3V" H 10300 2460 30  0000 C CNN
	1    10300 2350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR09
U 1 1 4F56CF70
P 10300 3050
F 0 "#PWR09" H 10300 3050 30  0001 C CNN
F 1 "GND" H 10300 2980 30  0001 C CNN
	1    10300 3050
	1    0    0    -1  
$EndComp
$Comp
L CONN_7 P3
U 1 1 4F56CF6C
P 10700 2700
F 0 "P3" V 10670 2700 60  0000 C CNN
F 1 "MPU" V 10770 2700 60  0000 C CNN
	1    10700 2700
	1    0    0    -1  
$EndComp
$Comp
L POT RV2
U 1 1 4F56CEE5
P 5100 1950
F 0 "RV2" H 5100 1850 50  0000 C CNN
F 1 "50k" H 5100 1950 50  0000 C CNN
	1    5100 1950
	0    1    1    0   
$EndComp
$Comp
L POT RV3
U 1 1 4F56CE90
P 5100 2800
F 0 "RV3" H 5100 2700 50  0000 C CNN
F 1 "50k" H 5100 2800 50  0000 C CNN
	1    5100 2800
	0    1    1    0   
$EndComp
Text Label 5800 1950 0    60   ~ 0
C1-
Text Label 5800 2800 0    60   ~ 0
C2+
$Comp
L +3.3V #PWR010
U 1 1 4F56CDD2
P 5100 1100
F 0 "#PWR010" H 5100 1060 30  0001 C CNN
F 1 "+3.3V" H 5100 1210 30  0000 C CNN
	1    5100 1100
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR011
U 1 1 4F56CDB6
P 5100 3700
F 0 "#PWR011" H 5100 3700 30  0001 C CNN
F 1 "GND" H 5100 3630 30  0001 C CNN
	1    5100 3700
	1    0    0    -1  
$EndComp
$Comp
L R R10
U 1 1 4F56CDB1
P 5100 3400
F 0 "R10" V 5180 3400 50  0000 C CNN
F 1 "330k" V 5100 3400 50  0000 C CNN
	1    5100 3400
	1    0    0    -1  
$EndComp
$Comp
L C C8
U 1 1 4F56CDAF
P 5450 3200
F 0 "C8" H 5500 3300 50  0000 L CNN
F 1 "5µF" H 5500 3100 50  0000 L CNN
	1    5450 3200
	1    0    0    -1  
$EndComp
$Comp
L C C10
U 1 1 4F56CDAE
P 5700 3200
F 0 "C10" H 5750 3300 50  0000 L CNN
F 1 "5µF" H 5750 3100 50  0000 L CNN
	1    5700 3200
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR012
U 1 1 4F56CDAD
P 5700 3700
F 0 "#PWR012" H 5700 3700 30  0001 C CNN
F 1 "GND" H 5700 3630 30  0001 C CNN
	1    5700 3700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR013
U 1 1 4F56CDAC
P 5450 3700
F 0 "#PWR013" H 5450 3700 30  0001 C CNN
F 1 "GND" H 5450 3630 30  0001 C CNN
	1    5450 3700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR014
U 1 1 4F56CD9B
P 5450 2450
F 0 "#PWR014" H 5450 2450 30  0001 C CNN
F 1 "GND" H 5450 2380 30  0001 C CNN
	1    5450 2450
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR015
U 1 1 4F56CD99
P 5700 2450
F 0 "#PWR015" H 5700 2450 30  0001 C CNN
F 1 "GND" H 5700 2380 30  0001 C CNN
	1    5700 2450
	1    0    0    -1  
$EndComp
$Comp
L C C9
U 1 1 4F56CD43
P 5700 2200
F 0 "C9" H 5750 2300 50  0000 L CNN
F 1 "5µF" H 5750 2100 50  0000 L CNN
	1    5700 2200
	1    0    0    -1  
$EndComp
$Comp
L C C7
U 1 1 4F56CD3B
P 5450 2200
F 0 "C7" H 5500 2300 50  0000 L CNN
F 1 "5µF" H 5500 2100 50  0000 L CNN
	1    5450 2200
	1    0    0    -1  
$EndComp
$Comp
L R R9
U 1 1 4F56CD2D
P 5100 1400
F 0 "R9" V 5180 1400 50  0000 C CNN
F 1 "330k" V 5100 1400 50  0000 C CNN
	1    5100 1400
	1    0    0    -1  
$EndComp
Text Label 10700 6050 0    60   ~ 0
ADC_IN
Text Label 1000 5850 2    60   ~ 0
AMP_OUT
$Comp
L GND #PWR016
U 1 1 4F56CC3C
P 9200 6350
F 0 "#PWR016" H 9200 6350 30  0001 C CNN
F 1 "GND" H 9200 6280 30  0001 C CNN
	1    9200 6350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR017
U 1 1 4F56CC3B
P 8000 6350
F 0 "#PWR017" H 8000 6350 30  0001 C CNN
F 1 "GND" H 8000 6280 30  0001 C CNN
	1    8000 6350
	1    0    0    -1  
$EndComp
$Comp
L C C14
U 1 1 4F56CC3A
P 8600 5550
F 0 "C14" H 8650 5650 50  0000 L CNN
F 1 "47nF" H 8650 5450 50  0000 L CNN
	1    8600 5550
	1    0    0    -1  
$EndComp
$Comp
L C C12
U 1 1 4F56CC39
P 8000 6100
F 0 "C12" H 8050 6200 50  0000 L CNN
F 1 "220nF" H 8050 6000 50  0000 L CNN
	1    8000 6100
	1    0    0    -1  
$EndComp
$Comp
L R R16
U 1 1 4F56CC38
P 8900 5850
F 0 "R16" V 8980 5850 50  0000 C CNN
F 1 "3k0" V 8900 5850 50  0000 C CNN
	1    8900 5850
	0    1    1    0   
$EndComp
$Comp
L R R14
U 1 1 4F56CC37
P 7700 5850
F 0 "R14" V 7780 5850 50  0000 C CNN
F 1 "430R" V 7700 5850 50  0000 C CNN
	1    7700 5850
	0    1    1    0   
$EndComp
$Comp
L R R15
U 1 1 4F56CC36
P 8300 5850
F 0 "R15" V 8380 5850 50  0000 C CNN
F 1 "6k8" V 8300 5850 50  0000 C CNN
	1    8300 5850
	0    1    1    0   
$EndComp
$Comp
L C C15
U 1 1 4F56CC35
P 9200 6100
F 0 "C15" H 9250 6200 50  0000 L CNN
F 1 "2,2nF" H 9250 6000 50  0000 L CNN
	1    9200 6100
	1    0    0    -1  
$EndComp
Text Label 10200 5650 1    60   ~ 0
FILTER_EN
$Comp
L GND #PWR018
U 1 1 4F56CC34
P 9950 6450
F 0 "#PWR018" H 9950 6450 30  0001 C CNN
F 1 "GND" H 9950 6380 30  0001 C CNN
	1    9950 6450
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR019
U 1 1 4F56CC33
P 9950 5650
F 0 "#PWR019" H 9950 5610 30  0001 C CNN
F 1 "+3.3V" H 9950 5760 30  0000 C CNN
	1    9950 5650
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U2
U 2 1 4F56CC32
P 9950 6050
F 0 "U2" H 10050 5700 60  0000 C CNN
F 1 "MAX9913" H 10150 5800 60  0000 C CNN
	2    9950 6050
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U2
U 1 1 4F56CBF6
P 6750 6050
F 0 "U2" H 6850 5700 60  0000 C CNN
F 1 "MAX9913" H 6950 5800 60  0000 C CNN
	1    6750 6050
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR020
U 1 1 4F56CBF5
P 6750 5650
F 0 "#PWR020" H 6750 5610 30  0001 C CNN
F 1 "+3.3V" H 6750 5760 30  0000 C CNN
	1    6750 5650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR021
U 1 1 4F56CBF4
P 6750 6450
F 0 "#PWR021" H 6750 6450 30  0001 C CNN
F 1 "GND" H 6750 6380 30  0001 C CNN
	1    6750 6450
	1    0    0    -1  
$EndComp
Text Label 7000 5650 1    60   ~ 0
FILTER_EN
$Comp
L C C11
U 1 1 4F56CBF3
P 6000 6100
F 0 "C11" H 6050 6200 50  0000 L CNN
F 1 "2,2nF" H 6050 6000 50  0000 L CNN
	1    6000 6100
	1    0    0    -1  
$EndComp
$Comp
L R R11
U 1 1 4F56CBF2
P 5100 5850
F 0 "R11" V 5180 5850 50  0000 C CNN
F 1 "6k8" V 5100 5850 50  0000 C CNN
	1    5100 5850
	0    1    1    0   
$EndComp
$Comp
L R R8
U 1 1 4F56CBF1
P 4500 5850
F 0 "R8" V 4580 5850 50  0000 C CNN
F 1 "430R" V 4500 5850 50  0000 C CNN
	1    4500 5850
	0    1    1    0   
$EndComp
$Comp
L R R12
U 1 1 4F56CBF0
P 5700 5850
F 0 "R12" V 5780 5850 50  0000 C CNN
F 1 "3k0" V 5700 5850 50  0000 C CNN
	1    5700 5850
	0    1    1    0   
$EndComp
$Comp
L C C5
U 1 1 4F56CBEF
P 4800 6100
F 0 "C5" H 4850 6200 50  0000 L CNN
F 1 "220nF" H 4850 6000 50  0000 L CNN
	1    4800 6100
	1    0    0    -1  
$EndComp
$Comp
L C C6
U 1 1 4F56CBEE
P 5400 5550
F 0 "C6" H 5450 5650 50  0000 L CNN
F 1 "47nF" H 5450 5450 50  0000 L CNN
	1    5400 5550
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR022
U 1 1 4F56CBED
P 4800 6350
F 0 "#PWR022" H 4800 6350 30  0001 C CNN
F 1 "GND" H 4800 6280 30  0001 C CNN
	1    4800 6350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR023
U 1 1 4F56CBEC
P 6000 6350
F 0 "#PWR023" H 6000 6350 30  0001 C CNN
F 1 "GND" H 6000 6280 30  0001 C CNN
	1    6000 6350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR024
U 1 1 4F56CB68
P 2800 6350
F 0 "#PWR024" H 2800 6350 30  0001 C CNN
F 1 "GND" H 2800 6280 30  0001 C CNN
	1    2800 6350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR025
U 1 1 4F56CB66
P 1600 6350
F 0 "#PWR025" H 1600 6350 30  0001 C CNN
F 1 "GND" H 1600 6280 30  0001 C CNN
	1    1600 6350
	1    0    0    -1  
$EndComp
$Comp
L C C3
U 1 1 4F56CB2B
P 2200 5550
F 0 "C3" H 2250 5650 50  0000 L CNN
F 1 "47nF" H 2250 5450 50  0000 L CNN
	1    2200 5550
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 4F56CB2A
P 1600 6100
F 0 "C1" H 1650 6200 50  0000 L CNN
F 1 "220nF" H 1650 6000 50  0000 L CNN
	1    1600 6100
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 4F56CB28
P 2500 5850
F 0 "R3" V 2580 5850 50  0000 C CNN
F 1 "3k0" V 2500 5850 50  0000 C CNN
	1    2500 5850
	0    1    1    0   
$EndComp
$Comp
L R R1
U 1 1 4F56CB27
P 1300 5850
F 0 "R1" V 1380 5850 50  0000 C CNN
F 1 "430R" V 1300 5850 50  0000 C CNN
	1    1300 5850
	0    1    1    0   
$EndComp
$Comp
L R R2
U 1 1 4F56CB22
P 1900 5850
F 0 "R2" V 1980 5850 50  0000 C CNN
F 1 "6k8" V 1900 5850 50  0000 C CNN
	1    1900 5850
	0    1    1    0   
$EndComp
$Comp
L C C4
U 1 1 4F56CB20
P 2800 6100
F 0 "C4" H 2850 6200 50  0000 L CNN
F 1 "2,2nF" H 2850 6000 50  0000 L CNN
	1    2800 6100
	1    0    0    -1  
$EndComp
Text Label 3800 5650 1    60   ~ 0
FILTER_EN
Text Label 4550 2500 0    60   ~ 0
AMP_OUT
$Comp
L +3.3V #PWR026
U 1 1 4F56CA59
P 2600 1650
F 0 "#PWR026" H 2600 1610 30  0001 C CNN
F 1 "+3.3V" H 2600 1760 30  0000 C CNN
	1    2600 1650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR027
U 1 1 4F56CA1A
P 4200 4200
F 0 "#PWR027" H 4200 4200 30  0001 C CNN
F 1 "GND" H 4200 4130 30  0001 C CNN
	1    4200 4200
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR028
U 1 1 4F56C95E
P 3700 2100
F 0 "#PWR028" H 3700 2060 30  0001 C CNN
F 1 "+3.3V" H 3700 2210 30  0000 C CNN
	1    3700 2100
	1    0    0    -1  
$EndComp
$Comp
L R R7
U 1 1 4F56C952
P 4200 3900
F 0 "R7" V 4280 3900 50  0000 C CNN
F 1 "10k" V 4200 3900 50  0000 C CNN
	1    4200 3900
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 4F56C94E
P 4200 2800
F 0 "R6" V 4280 2800 50  0000 C CNN
F 1 "10k" V 4200 2800 50  0000 C CNN
	1    4200 2800
	1    0    0    -1  
$EndComp
$Comp
L POT RV1
U 1 1 4F56C949
P 4200 3350
F 0 "RV1" H 4200 3250 50  0000 C CNN
F 1 "100k" H 4200 3350 50  0000 C CNN
	1    4200 3350
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR029
U 1 1 4F56C942
P 1800 2850
F 0 "#PWR029" H 1800 2850 30  0001 C CNN
F 1 "GND" H 1800 2780 30  0001 C CNN
	1    1800 2850
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR030
U 1 1 4F56C940
P 2600 3000
F 0 "#PWR030" H 2600 3000 30  0001 C CNN
F 1 "GND" H 2600 2930 30  0001 C CNN
	1    2600 3000
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 4F56C903
P 2150 2300
F 0 "C2" H 2200 2400 50  0000 L CNN
F 1 "47µF" H 2200 2200 50  0000 L CNN
	1    2150 2300
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 4F56C8FE
P 2600 2650
F 0 "R5" V 2680 2650 50  0000 C CNN
F 1 "470k" V 2600 2650 50  0000 C CNN
	1    2600 2650
	1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 4F56C8E4
P 2600 1950
F 0 "R4" V 2680 1950 50  0000 C CNN
F 1 "470k" V 2600 1950 50  0000 C CNN
	1    2600 1950
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P1
U 1 1 4F56C8DB
P 1400 2600
F 0 "P1" V 1350 2600 40  0000 C CNN
F 1 "MIC_IN" V 1450 2600 40  0000 C CNN
	1    1400 2600
	-1   0    0    1   
$EndComp
$Comp
L C C13
U 1 1 4F56B741
P 8200 1550
F 0 "C13" H 8250 1650 50  0000 L CNN
F 1 "100nF" H 8250 1450 50  0000 L CNN
	1    8200 1550
	0    1    1    0   
$EndComp
$Comp
L GND #PWR031
U 1 1 4F56B73F
P 8400 1450
F 0 "#PWR031" H 8400 1450 30  0001 C CNN
F 1 "GND" H 8400 1380 30  0001 C CNN
	1    8400 1450
	-1   0    0    1   
$EndComp
$Comp
L +3.3V #PWR032
U 1 1 4F56B73C
P 8000 1450
F 0 "#PWR032" H 8000 1410 30  0001 C CNN
F 1 "+3.3V" H 8000 1560 30  0000 C CNN
	1    8000 1450
	1    0    0    -1  
$EndComp
$Comp
L PIC16F1847SO U3
U 1 1 4F56B72F
P 8200 2300
F 0 "U3" H 8200 2350 60  0000 C CNN
F 1 "PIC16F1847SO" H 8200 2250 60  0000 C CNN
	1    8200 2300
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR033
U 1 1 4F56B6FA
P 3450 2900
F 0 "#PWR033" H 3450 2900 30  0001 C CNN
F 1 "GND" H 3450 2830 30  0001 C CNN
	1    3450 2900
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR034
U 1 1 4F56B6F7
P 3550 6450
F 0 "#PWR034" H 3550 6450 30  0001 C CNN
F 1 "GND" H 3550 6380 30  0001 C CNN
	1    3550 6450
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR035
U 1 1 4F56B6E8
P 3550 5650
F 0 "#PWR035" H 3550 5610 30  0001 C CNN
F 1 "+3.3V" H 3550 5760 30  0000 C CNN
	1    3550 5650
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR036
U 1 1 4F56B6E5
P 3450 2100
F 0 "#PWR036" H 3450 2060 30  0001 C CNN
F 1 "+3.3V" H 3450 2210 30  0000 C CNN
	1    3450 2100
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U1
U 1 1 4F56B59C
P 3450 2500
F 0 "U1" H 3550 2150 60  0000 C CNN
F 1 "MAX9913" H 3650 2250 60  0000 C CNN
	1    3450 2500
	1    0    0    -1  
$EndComp
$Comp
L MAX9913 U1
U 2 1 4F56B58F
P 3550 6050
F 0 "U1" H 3650 5700 60  0000 C CNN
F 1 "MAX9913" H 3750 5800 60  0000 C CNN
	2    3550 6050
	1    0    0    -1  
$EndComp
$EndSCHEMATC