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: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:MLAB_IO
LIBS:MLAB_D
LIBS:MLAB_T
LIBS:Jumpers
LIBS:PCRD02A-cache
EELAYER 24 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L R R?
U 1 1 5476823C
P 1150 2250
F 0 "R?" V 1230 2250 40  0000 C CNN
F 1 "4M7" V 1157 2251 40  0000 C CNN
F 2 "" V 1080 2250 30  0000 C CNN
F 3 "" H 1150 2250 30  0000 C CNN
        1    1150 2250
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 547682B2
P 1150 3000
F 0 "R?" V 1230 3000 40  0000 C CNN
F 1 "4M7" V 1157 3001 40  0000 C CNN
F 2 "" V 1080 3000 30  0000 C CNN
F 3 "" H 1150 3000 30  0000 C CNN
        1    1150 3000
        1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 547682EE
P 1550 3000
F 0 "C?" H 1550 3100 40  0000 L CNN
F 1 "100k" H 1556 2915 40  0000 L CNN
F 2 "" H 1588 2850 30  0000 C CNN
F 3 "" H 1550 3000 60  0000 C CNN
        1    1550 3000
        1    0    0    -1  
$EndComp
$Comp
L DIODE D?
U 1 1 547683A9
P 1150 3900
F 0 "D?" H 1150 4000 40  0000 C CNN
F 1 "DIODE" H 1150 3800 40  0000 C CNN
F 2 "" H 1150 3900 60  0000 C CNN
F 3 "" H 1150 3900 60  0000 C CNN
        1    1150 3900
        0    -1   -1   0   
$EndComp
$Comp
L C C?
U 1 1 54768486
P 1550 3600
F 0 "C?" H 1550 3700 40  0000 L CNN
F 1 "100k" H 1556 3515 40  0000 L CNN
F 2 "" H 1588 3450 30  0000 C CNN
F 3 "" H 1550 3600 60  0000 C CNN
        1    1550 3600
        0    1    1    0   
$EndComp
$Comp
L JFET_N Q?
U 1 1 547684BC
P 2250 3600
F 0 "Q?" H 2153 3850 70  0000 C CNN
F 1 "BF862" H 2103 3353 60  0000 C CNN
F 2 "" H 2250 3600 60  0000 C CNN
F 3 "" H 2250 3600 60  0000 C CNN
        1    2250 3600
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 54768535
P 2400 2850
F 0 "R?" V 2480 2850 40  0000 C CNN
F 1 "R" V 2407 2851 40  0000 C CNN
F 2 "" V 2330 2850 30  0000 C CNN
F 3 "" H 2400 2850 30  0000 C CNN
        1    2400 2850
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 5476858B
P 2400 2200
F 0 "R?" V 2480 2200 40  0000 C CNN
F 1 "R" V 2407 2201 40  0000 C CNN
F 2 "" V 2330 2200 30  0000 C CNN
F 3 "" H 2400 2200 30  0000 C CNN
        1    2400 2200
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 547685C9
P 2900 2850
F 0 "R?" V 2980 2850 40  0000 C CNN
F 1 "R" V 2907 2851 40  0000 C CNN
F 2 "" V 2830 2850 30  0000 C CNN
F 3 "" H 2900 2850 30  0000 C CNN
        1    2900 2850
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 5476860C
P 2900 3650
F 0 "R?" V 2980 3650 40  0000 C CNN
F 1 "R" V 2907 3651 40  0000 C CNN
F 2 "" V 2830 3650 30  0000 C CNN
F 3 "" H 2900 3650 30  0000 C CNN
        1    2900 3650
        1    0    0    -1  
$EndComp
$Comp
L AD8691 U?
U 1 1 547687AC
P 4000 3250
F 0 "U?" H 4150 3550 70  0000 C CNN
F 1 "AD8691" H 4150 3450 70  0000 C CNN
F 2 "" H 4000 3250 60  0000 C CNN
F 3 "" H 4000 3250 60  0000 C CNN
        1    4000 3250
        1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 54768B04
P 3950 4100
F 0 "C?" H 3950 4200 40  0000 L CNN
F 1 "2" H 3956 4015 40  0000 L CNN
F 2 "" H 3988 3950 30  0000 C CNN
F 3 "" H 3950 4100 60  0000 C CNN
        1    3950 4100
        0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 54768C16
P 3950 4400
F 0 "R?" V 4030 4400 40  0000 C CNN
F 1 "2M" V 3957 4401 40  0000 C CNN
F 2 "" V 3880 4400 30  0000 C CNN
F 3 "" H 3950 4400 30  0000 C CNN
        1    3950 4400
        0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 54768CE2
P 6700 3650
F 0 "R?" V 6780 3650 40  0000 C CNN
F 1 "10k" V 6707 3651 40  0000 C CNN
F 2 "" V 6630 3650 30  0000 C CNN
F 3 "" H 6700 3650 30  0000 C CNN
        1    6700 3650
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 54768D36
P 6700 4300
F 0 "R?" V 6780 4300 40  0000 C CNN
F 1 "1k5" V 6707 4301 40  0000 C CNN
F 2 "" V 6630 4300 30  0000 C CNN
F 3 "" H 6700 4300 30  0000 C CNN
        1    6700 4300
        1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 54768D77
P 7150 3650
F 0 "C?" H 7150 3750 40  0000 L CNN
F 1 "510" H 7156 3565 40  0000 L CNN
F 2 "" H 7188 3500 30  0000 C CNN
F 3 "" H 7150 3650 60  0000 C CNN
        1    7150 3650
        -1   0    0    1   
$EndComp
$Comp
L R R?
U 1 1 54768E39
P 7600 3350
F 0 "R?" V 7680 3350 40  0000 C CNN
F 1 "3k9" V 7607 3351 40  0000 C CNN
F 2 "" V 7530 3350 30  0000 C CNN
F 3 "" H 7600 3350 30  0000 C CNN
        1    7600 3350
        0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 54768EA8
P 8250 3350
F 0 "R?" V 8330 3350 40  0000 C CNN
F 1 "2k4" V 8257 3351 40  0000 C CNN
F 2 "" V 8180 3350 30  0000 C CNN
F 3 "" H 8250 3350 30  0000 C CNN
        1    8250 3350
        0    1    1    0   
$EndComp
$Comp
L C C?
U 1 1 54768EE6
P 9400 2700
F 0 "C?" H 9400 2800 40  0000 L CNN
F 1 "180" H 9406 2615 40  0000 L CNN
F 2 "" H 9438 2550 30  0000 C CNN
F 3 "" H 9400 2700 60  0000 C CNN
        1    9400 2700
        0    1    1    0   
$EndComp
$Comp
L C C?
U 1 1 54768FA2
P 8550 3650
F 0 "C?" H 8550 3750 40  0000 L CNN
F 1 "240" H 8556 3565 40  0000 L CNN
F 2 "" H 8588 3500 30  0000 C CNN
F 3 "" H 8550 3650 60  0000 C CNN
        1    8550 3650
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 547690B2
P 9400 4100
F 0 "R?" V 9480 4100 40  0000 C CNN
F 1 "2k4" V 9407 4101 40  0000 C CNN
F 2 "" V 9330 4100 30  0000 C CNN
F 3 "" H 9400 4100 30  0000 C CNN
        1    9400 4100
        0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 54769114
P 8900 4400
F 0 "R?" V 8980 4400 40  0000 C CNN
F 1 "2k4" V 8907 4401 40  0000 C CNN
F 2 "" V 8830 4400 30  0000 C CNN
F 3 "" H 8900 4400 30  0000 C CNN
        1    8900 4400
        1    0    0    -1  
$EndComp
$Comp
L R R?
U 1 1 54769180
P 10650 3800
F 0 "R?" V 10730 3800 40  0000 C CNN
F 1 "10k" V 10657 3801 40  0000 C CNN
F 2 "" V 10580 3800 30  0000 C CNN
F 3 "" H 10650 3800 30  0000 C CNN
        1    10650 3800
        1    0    0    -1  
$EndComp
$Comp
L C C?
U 1 1 547691BD
P 10350 3450
F 0 "C?" H 10350 3550 40  0000 L CNN
F 1 "330k" H 10356 3365 40  0000 L CNN
F 2 "" H 10388 3300 30  0000 C CNN
F 3 "" H 10350 3450 60  0000 C CNN
        1    10350 3450
        0    1    1    0   
$EndComp
$Comp
L CONN1_1 J?
U 1 1 5476968B
P 1200 1600
F 0 "J?" H 1250 1650 50  0000 C CNN
F 1 "CONN1_1" H 1300 1550 40  0000 C CNN
F 2 "" H 1250 1550 60  0000 C CNN
F 3 "" H 1250 1550 60  0000 C CNN
        1    1200 1600
        0    -1   -1   0   
$EndComp
$Comp
L C C?
U 1 1 54769B26
P 3200 3650
F 0 "C?" H 3200 3750 40  0000 L CNN
F 1 "2" H 3206 3565 40  0000 L CNN
F 2 "" H 3238 3500 30  0000 C CNN
F 3 "" H 3200 3650 60  0000 C CNN
        1    3200 3650
        1    0    0    -1  
$EndComp
Wire Wire Line
        1150 1900 1150 2000
Wire Wire Line
        1150 2500 1150 2750
Wire Wire Line
        1150 3250 1150 3700
$Comp
L GND #PWR?
U 1 1 54769DCA
P 1150 4250
F 0 "#PWR?" H 1150 4250 30  0001 C CNN
F 1 "GND" H 1150 4180 30  0001 C CNN
F 2 "" H 1150 4250 60  0000 C CNN
F 3 "" H 1150 4250 60  0000 C CNN
        1    1150 4250
        1    0    0    -1  
$EndComp
Wire Wire Line
        1150 4250 1150 4100
Wire Wire Line
        1350 3600 1150 3600
Connection ~ 1150 3600
Wire Wire Line
        1150 2600 1550 2600
Wire Wire Line
        1550 2600 1550 2800
Connection ~ 1150 2600
$Comp
L V- #PWR?
U 1 1 54769F01
P 1550 3250
F 0 "#PWR?" H 1550 3350 30  0001 C CNN
F 1 "V-" H 1550 3360 30  0000 C CNN
F 2 "" H 1550 3250 60  0000 C CNN
F 3 "" H 1550 3250 60  0000 C CNN
        1    1550 3250
        -1   0    0    1   
$EndComp
Wire Wire Line
        1550 3250 1550 3200
Wire Wire Line
        1750 3600 2000 3600
Wire Wire Line
        2400 3250 2400 3100
Wire Wire Line
        2400 2600 2400 2450
$Comp
L V+ #PWR?
U 1 1 5476A0F5
P 2400 1900
F 0 "#PWR?" H 2400 2000 30  0001 C CNN
F 1 "V+" H 2400 2010 30  0000 C CNN
F 2 "" H 2400 1900 60  0000 C CNN
F 3 "" H 2400 1900 60  0000 C CNN
        1    2400 1900
        1    0    0    -1  
$EndComp
Wire Wire Line
        2400 1950 2400 1900
Wire Wire Line
        2400 2550 2900 2550
Wire Wire Line
        2900 2550 2900 2600
Connection ~ 2400 2550
Connection ~ 2400 3150
Wire Wire Line
        2900 3400 2900 3100
Wire Wire Line
        2900 3350 3500 3350
Connection ~ 2900 3350
Wire Wire Line
        3200 3450 3200 3350
Connection ~ 3200 3350
$Comp
L V- #PWR?
U 1 1 5476A75B
P 2400 4050
F 0 "#PWR?" H 2400 4150 30  0001 C CNN
F 1 "V-" H 2400 4160 30  0000 C CNN
F 2 "" H 2400 4050 60  0000 C CNN
F 3 "" H 2400 4050 60  0000 C CNN
        1    2400 4050
        -1   0    0    1   
$EndComp
Wire Wire Line
        2400 4050 2400 3950
$Comp
L V- #PWR?
U 1 1 5476A8CC
P 2900 4050
F 0 "#PWR?" H 2900 4150 30  0001 C CNN
F 1 "V-" H 2900 4160 30  0000 C CNN
F 2 "" H 2900 4050 60  0000 C CNN
F 3 "" H 2900 4050 60  0000 C CNN
        1    2900 4050
        -1   0    0    1   
$EndComp
$Comp
L V- #PWR?
U 1 1 5476A8F5
P 3200 4050
F 0 "#PWR?" H 3200 4150 30  0001 C CNN
F 1 "V-" H 3200 4160 30  0000 C CNN
F 2 "" H 3200 4050 60  0000 C CNN
F 3 "" H 3200 4050 60  0000 C CNN
        1    3200 4050
        -1   0    0    1   
$EndComp
Wire Wire Line
        2900 4050 2900 3900
Wire Wire Line
        3200 4050 3200 3850
$Comp
L V- #PWR?
U 1 1 5476A991
P 5850 2850
F 0 "#PWR?" H 5850 2950 30  0001 C CNN
F 1 "V-" H 5850 2960 30  0000 C CNN
F 2 "" H 5850 2850 60  0000 C CNN
F 3 "" H 5850 2850 60  0000 C CNN
        1    5850 2850
        1    0    0    -1  
$EndComp
Wire Wire Line
        3900 3700 3900 3650
Wire Wire Line
        3500 3150 2400 3150
$Comp
L V+ #PWR?
U 1 1 5476AB8C
P 3900 2800
F 0 "#PWR?" H 3900 2900 30  0001 C CNN
F 1 "V+" H 3900 2910 30  0000 C CNN
F 2 "" H 3900 2800 60  0000 C CNN
F 3 "" H 3900 2800 60  0000 C CNN
        1    3900 2800
        1    0    0    -1  
$EndComp
Wire Wire Line
        3900 2850 3900 2800
$Comp
L C C?
U 1 1 5476AC2D
P 4800 3250
F 0 "C?" H 4800 3350 40  0000 L CNN
F 1 "330k" H 4806 3165 40  0000 L CNN
F 2 "" H 4838 3100 30  0000 C CNN
F 3 "" H 4800 3250 60  0000 C CNN
        1    4800 3250
        0    1    1    0   
$EndComp
$Comp
L R R?
U 1 1 5476AC84
P 5100 3550
F 0 "R?" V 5180 3550 40  0000 C CNN
F 1 "3k3" V 5107 3551 40  0000 C CNN
F 2 "" V 5030 3550 30  0000 C CNN
F 3 "" H 5100 3550 30  0000 C CNN
        1    5100 3550
        1    0    0    -1  
$EndComp
Wire Wire Line
        1900 3600 1900 4400
Wire Wire Line
        1900 4400 3700 4400
Connection ~ 1900 3600
Wire Wire Line
        4500 3250 4600 3250
Wire Wire Line
        4550 3250 4550 4400
Wire Wire Line
        4550 4400 4200 4400
Wire Wire Line
        4150 4100 4550 4100
Connection ~ 4550 4100
Wire Wire Line
        3750 4100 3500 4100
Wire Wire Line
        3500 4100 3500 4400
Connection ~ 3500 4400
Connection ~ 4550 3250
Wire Wire Line
        5000 3250 5450 3250
Wire Wire Line
        5100 3250 5100 3300
$Comp
L GND #PWR?
U 1 1 5476B3F0
P 5100 3850
F 0 "#PWR?" H 5100 3850 30  0001 C CNN
F 1 "GND" H 5100 3780 30  0001 C CNN
F 2 "" H 5100 3850 60  0000 C CNN
F 3 "" H 5100 3850 60  0000 C CNN
        1    5100 3850
        1    0    0    -1  
$EndComp
$Comp
L AD8692 U?
U 1 1 5476BDEA
P 5950 3350
F 0 "U?" H 6100 3650 70  0000 C CNN
F 1 "AD8692" H 6100 3550 70  0000 C CNN
F 2 "" H 5950 3350 60  0000 C CNN
F 3 "" H 5950 3350 60  0000 C CNN
        1    5950 3350
        1    0    0    -1  
$EndComp
$Comp
L AD8692 U?
U 2 1 54763079
P 9500 3450
F 0 "U?" H 9650 3750 70  0000 C CNN
F 1 "AD8692" H 9650 3650 70  0000 C CNN
F 2 "" H 9500 3450 60  0000 C CNN
F 3 "" H 9500 3450 60  0000 C CNN
        2    9500 3450
        1    0    0    -1  
$EndComp
Connection ~ 5100 3250
Wire Wire Line
        6450 3350 7350 3350
Wire Wire Line
        6700 3350 6700 3400
Wire Wire Line
        5450 3450 5450 3950
Wire Wire Line
        5450 3950 7150 3950
Wire Wire Line
        6700 3900 6700 4050
Connection ~ 6700 3950
Connection ~ 6700 3350
Wire Wire Line
        7150 3450 7150 3350
Connection ~ 7150 3350
Wire Wire Line
        7150 3950 7150 3850
Wire Wire Line
        7850 3350 8000 3350
Wire Wire Line
        8500 3350 9000 3350
Wire Wire Line
        8550 3450 8550 3350
Connection ~ 8550 3350
Wire Wire Line
        8900 4150 8900 3550
Wire Wire Line
        8900 3550 9000 3550
Wire Wire Line
        9150 4100 8900 4100
Connection ~ 8900 4100
Wire Wire Line
        10000 3450 10150 3450
Wire Wire Line
        9650 4100 10050 4100
Wire Wire Line
        10050 4100 10050 2700
Connection ~ 10050 3450
Wire Wire Line
        7900 3350 7900 2700
Wire Wire Line
        7900 2700 9200 2700
Connection ~ 7900 3350
Wire Wire Line
        10050 2700 9600 2700
Wire Wire Line
        10550 3450 10900 3450
Wire Wire Line
        10650 3550 10650 3450
Connection ~ 10650 3450
$Comp
L GND #PWR?
U 1 1 547647C3
P 10650 4150
F 0 "#PWR?" H 10650 4150 30  0001 C CNN
F 1 "GND" H 10650 4080 30  0001 C CNN
F 2 "" H 10650 4150 60  0000 C CNN
F 3 "" H 10650 4150 60  0000 C CNN
        1    10650 4150
        1    0    0    -1  
$EndComp
Wire Wire Line
        10650 4150 10650 4050
$Comp
L CONN1_1 J?
U 1 1 54764983
P 11200 3500
F 0 "J?" H 11250 3550 50  0000 C CNN
F 1 "OUT" H 11300 3450 40  0000 C CNN
F 2 "" H 11250 3450 60  0000 C CNN
F 3 "" H 11250 3450 60  0000 C CNN
        1    11200 3500
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 54764BD3
P 8900 4700
F 0 "#PWR?" H 8900 4700 30  0001 C CNN
F 1 "GND" H 8900 4630 30  0001 C CNN
F 2 "" H 8900 4700 60  0000 C CNN
F 3 "" H 8900 4700 60  0000 C CNN
        1    8900 4700
        1    0    0    -1  
$EndComp
$Comp
L GND #PWR?
U 1 1 54764C98
P 6700 4600
F 0 "#PWR?" H 6700 4600 30  0001 C CNN
F 1 "GND" H 6700 4530 30  0001 C CNN
F 2 "" H 6700 4600 60  0000 C CNN
F 3 "" H 6700 4600 60  0000 C CNN
        1    6700 4600
        1    0    0    -1  
$EndComp
Wire Wire Line
        8900 4700 8900 4650
Wire Wire Line
        6700 4600 6700 4550
Wire Wire Line
        5100 3850 5100 3800
$Comp
L GND #PWR?
U 1 1 54765DA1
P 8550 3900
F 0 "#PWR?" H 8550 3900 30  0001 C CNN
F 1 "GND" H 8550 3830 30  0001 C CNN
F 2 "" H 8550 3900 60  0000 C CNN
F 3 "" H 8550 3900 60  0000 C CNN
        1    8550 3900
        1    0    0    -1  
$EndComp
Wire Wire Line
        8550 3900 8550 3850
$EndSCHEMATC