EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 23 28
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 2 1 6003E048
P 3800 3450
F 0 "U?" H 4144 3503 60  0000 L CNN
F 1 "MCP6004-I_P" H 4144 3397 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4000 3650 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 3750 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4000 3850 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4000 3950 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4000 4050 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4000 4150 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 4250 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4000 4350 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4000 4450 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4000 4550 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4000 4650 60  0001 L CNN "Status"
	2    3800 3450
	1    0    0    -1  
$EndComp
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 3 1 6003EFB2
P 3800 5100
F 0 "U?" H 4144 5153 60  0000 L CNN
F 1 "MCP6004-I_P" H 4144 5047 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4000 5300 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 5400 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4000 5500 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4000 5600 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4000 5700 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4000 5800 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 5900 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4000 6000 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4000 6100 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4000 6200 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4000 6300 60  0001 L CNN "Status"
	3    3800 5100
	1    0    0    -1  
$EndComp
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 4 1 6003FCE4
P 3800 6750
F 0 "U?" H 4144 6803 60  0000 L CNN
F 1 "MCP6004-I_P" H 4144 6697 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4000 6950 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 7050 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4000 7150 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4000 7250 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4000 7350 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4000 7450 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 7550 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4000 7650 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4000 7750 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4000 7850 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4000 7950 60  0001 L CNN "Status"
	4    3800 6750
	1    0    0    -1  
$EndComp
$Comp
L dk_Linear-Amplifiers-Instrumentation-OP-Amps-Buffer-Amps:MCP6004-I_P U?
U 1 1 60046719
P 3800 1800
AR Path="/5F80B3E6/5FFE0A29/60046719" Ref="U?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046719" Ref="U?"  Part="1" 
F 0 "U?" H 4144 1853 60  0000 L CNN
F 1 "MCP6004-I_P" H 4144 1747 60  0000 L CNN
F 2 "digikey-footprints:DIP-14_W3mm" H 4000 2000 60  0001 L CNN
F 3 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 2100 60  0001 L CNN
F 4 "MCP6004-I/P-ND" H 4000 2200 60  0001 L CNN "Digi-Key_PN"
F 5 "MCP6004-I/P" H 4000 2300 60  0001 L CNN "MPN"
F 6 "Integrated Circuits (ICs)" H 4000 2400 60  0001 L CNN "Category"
F 7 "Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps" H 4000 2500 60  0001 L CNN "Family"
F 8 "http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en011705" H 4000 2600 60  0001 L CNN "DK_Datasheet_Link"
F 9 "/product-detail/en/microchip-technology/MCP6004-I-P/MCP6004-I-P-ND/523060" H 4000 2700 60  0001 L CNN "DK_Detail_Page"
F 10 "IC OPAMP GP 4 CIRCUIT 14DIP" H 4000 2800 60  0001 L CNN "Description"
F 11 "Microchip Technology" H 4000 2900 60  0001 L CNN "Manufacturer"
F 12 "Active" H 4000 3000 60  0001 L CNN "Status"
	1    3800 1800
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6004671F
P 3800 2050
AR Path="/5F80B3E6/5FFE0A29/6004671F" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004671F" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 1800 50  0001 C CNN
F 1 "GND" H 3805 1877 50  0000 C CNN
F 2 "" H 3800 2050 50  0001 C CNN
F 3 "" H 3800 2050 50  0001 C CNN
	1    3800 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 2000 3800 2050
$Comp
L power:+3.3VA #PWR?
U 1 1 60046726
P 3800 1550
AR Path="/5F80B3E6/5FFE0A29/60046726" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046726" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 1400 50  0001 C CNN
F 1 "+3.3VA" H 3815 1723 50  0000 C CNN
F 2 "" H 3800 1550 50  0001 C CNN
F 3 "" H 3800 1550 50  0001 C CNN
	1    3800 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 1550 3800 1600
$Comp
L Device:R R?
U 1 1 6004672D
P 3100 1700
AR Path="/5F80B3E6/5FFE0A29/6004672D" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004672D" Ref="R?"  Part="1" 
F 0 "R?" V 2893 1700 50  0000 C CNN
F 1 "100k" V 2984 1700 50  0000 C CNN
F 2 "" V 3030 1700 50  0001 C CNN
F 3 "~" H 3100 1700 50  0001 C CNN
	1    3100 1700
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 60046733
P 3800 1300
AR Path="/5F80B3E6/5FFE0A29/60046733" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046733" Ref="R?"  Part="1" 
F 0 "R?" V 3593 1300 50  0000 C CNN
F 1 "33k" V 3684 1300 50  0000 C CNN
F 2 "" V 3730 1300 50  0001 C CNN
F 3 "~" H 3800 1300 50  0001 C CNN
	1    3800 1300
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 60046739
P 3100 1300
AR Path="/5F80B3E6/5FFE0A29/60046739" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046739" Ref="R?"  Part="1" 
F 0 "R?" V 2893 1300 50  0000 C CNN
F 1 "140k" V 2984 1300 50  0000 C CNN
F 2 "" V 3030 1300 50  0001 C CNN
F 3 "~" H 3100 1300 50  0001 C CNN
	1    3100 1300
	0    1    1    0   
$EndComp
Wire Wire Line
	3500 1700 3400 1700
Wire Wire Line
	3400 1700 3400 1300
Wire Wire Line
	3400 1300 3650 1300
Connection ~ 3400 1700
Wire Wire Line
	3400 1700 3250 1700
Wire Wire Line
	3950 1300 4350 1300
Wire Wire Line
	4350 1300 4350 1800
Wire Wire Line
	4350 1800 4100 1800
Wire Wire Line
	3400 1300 3250 1300
Connection ~ 3400 1300
$Comp
L power:GND #PWR?
U 1 1 60046749
P 3400 2050
AR Path="/5F80B3E6/5FFE0A29/60046749" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046749" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3400 1800 50  0001 C CNN
F 1 "GND" H 3405 1877 50  0000 C CNN
F 2 "" H 3400 2050 50  0001 C CNN
F 3 "" H 3400 2050 50  0001 C CNN
	1    3400 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 1900 3400 1900
Wire Wire Line
	3400 1900 3400 2050
$Comp
L Device:C C?
U 1 1 60046751
P 3800 950
AR Path="/5F80B3E6/5FFE0A29/60046751" Ref="C?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046751" Ref="C?"  Part="1" 
F 0 "C?" V 3548 950 50  0000 C CNN
F 1 "1n" V 3639 950 50  0000 C CNN
F 2 "" H 3838 800 50  0001 C CNN
F 3 "~" H 3800 950 50  0001 C CNN
	1    3800 950 
	0    1    1    0   
$EndComp
Wire Wire Line
	3650 950  3400 950 
Wire Wire Line
	3400 950  3400 1300
Wire Wire Line
	3950 950  4350 950 
Wire Wire Line
	4350 950  4350 1300
Connection ~ 4350 1300
Text GLabel 2900 1300 0    50   Input ~ 0
AREF_-10V
Wire Wire Line
	2900 1300 2950 1300
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 6004675E
P 2050 1700
AR Path="/5F80B3E6/5FFE0A29/6004675E" Ref="J?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004675E" Ref="J?"  Part="1" 
F 0 "J?" H 2055 2042 50  0000 C CNN
F 1 "VOICE1_VO" H 2055 1951 50  0000 C CNN
F 2 "" H 2050 1700 50  0001 C CNN
F 3 "" H 2050 1700 50  0001 C CNN
	1    2050 1700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 60046764
P 2450 1900
AR Path="/5F80B3E6/5FFE0A29/60046764" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046764" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2450 1650 50  0001 C CNN
F 1 "GND" H 2455 1727 50  0000 C CNN
F 2 "" H 2450 1900 50  0001 C CNN
F 3 "" H 2450 1900 50  0001 C CNN
	1    2450 1900
	1    0    0    -1  
$EndComp
Wire Wire Line
	2250 1600 2450 1600
Wire Wire Line
	2450 1600 2450 1800
Wire Wire Line
	2250 1800 2450 1800
Connection ~ 2450 1800
Wire Wire Line
	2450 1800 2450 1900
Text GLabel 4500 1300 2    50   Input ~ 0
VOICE1_VO_ADC
Wire Wire Line
	4500 1300 4350 1300
$Comp
L power:GND #PWR?
U 1 1 60046771
P 2600 2100
AR Path="/5F80B3E6/60046771" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/60046771" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/60046771" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60046771" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2600 1850 50  0001 C CNN
F 1 "GND" H 2605 1927 50  0000 C CNN
F 2 "" H 2600 2100 50  0001 C CNN
F 3 "" H 2600 2100 50  0001 C CNN
	1    2600 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2600 2050 2600 2100
Wire Wire Line
	2950 1700 2600 1700
Wire Wire Line
	2600 1700 2600 1750
$Comp
L Device:D_TVS D?
U 1 1 6004677A
P 2600 1900
AR Path="/5F80B3E6/5FBF977F/6004677A" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/6004677A" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004677A" Ref="D?"  Part="1" 
F 0 "D?" V 2554 1980 50  0000 L CNN
F 1 "B72500D0160H060" V 2645 1980 50  0000 L CNN
F 2 "" H 2600 1900 50  0001 C CNN
F 3 "~" H 2600 1900 50  0001 C CNN
	1    2600 1900
	0    1    1    0   
$EndComp
Connection ~ 2600 1700
Wire Wire Line
	2250 1700 2400 1700
$Comp
L power:GND #PWR?
U 1 1 6004D5D7
P 3800 3700
AR Path="/5F80B3E6/5FFE0A29/6004D5D7" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D5D7" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 3450 50  0001 C CNN
F 1 "GND" H 3805 3527 50  0000 C CNN
F 2 "" H 3800 3700 50  0001 C CNN
F 3 "" H 3800 3700 50  0001 C CNN
	1    3800 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 3650 3800 3700
$Comp
L power:+3.3VA #PWR?
U 1 1 6004D5DE
P 3800 3200
AR Path="/5F80B3E6/5FFE0A29/6004D5DE" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D5DE" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 3050 50  0001 C CNN
F 1 "+3.3VA" H 3815 3373 50  0000 C CNN
F 2 "" H 3800 3200 50  0001 C CNN
F 3 "" H 3800 3200 50  0001 C CNN
	1    3800 3200
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 3200 3800 3250
$Comp
L Device:R R?
U 1 1 6004D5E5
P 3100 3350
AR Path="/5F80B3E6/5FFE0A29/6004D5E5" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D5E5" Ref="R?"  Part="1" 
F 0 "R?" V 2893 3350 50  0000 C CNN
F 1 "100k" V 2984 3350 50  0000 C CNN
F 2 "" V 3030 3350 50  0001 C CNN
F 3 "~" H 3100 3350 50  0001 C CNN
	1    3100 3350
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 6004D5EB
P 3800 2950
AR Path="/5F80B3E6/5FFE0A29/6004D5EB" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D5EB" Ref="R?"  Part="1" 
F 0 "R?" V 3593 2950 50  0000 C CNN
F 1 "33k" V 3684 2950 50  0000 C CNN
F 2 "" V 3730 2950 50  0001 C CNN
F 3 "~" H 3800 2950 50  0001 C CNN
	1    3800 2950
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 6004D5F1
P 3100 2950
AR Path="/5F80B3E6/5FFE0A29/6004D5F1" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D5F1" Ref="R?"  Part="1" 
F 0 "R?" V 2893 2950 50  0000 C CNN
F 1 "140k" V 2984 2950 50  0000 C CNN
F 2 "" V 3030 2950 50  0001 C CNN
F 3 "~" H 3100 2950 50  0001 C CNN
	1    3100 2950
	0    1    1    0   
$EndComp
Wire Wire Line
	3500 3350 3400 3350
Wire Wire Line
	3400 3350 3400 2950
Wire Wire Line
	3400 2950 3650 2950
Connection ~ 3400 3350
Wire Wire Line
	3400 3350 3250 3350
Wire Wire Line
	3950 2950 4350 2950
Wire Wire Line
	4350 2950 4350 3450
Wire Wire Line
	4350 3450 4100 3450
Wire Wire Line
	3400 2950 3250 2950
Connection ~ 3400 2950
$Comp
L power:GND #PWR?
U 1 1 6004D601
P 3400 3700
AR Path="/5F80B3E6/5FFE0A29/6004D601" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D601" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3400 3450 50  0001 C CNN
F 1 "GND" H 3405 3527 50  0000 C CNN
F 2 "" H 3400 3700 50  0001 C CNN
F 3 "" H 3400 3700 50  0001 C CNN
	1    3400 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 3550 3400 3550
Wire Wire Line
	3400 3550 3400 3700
$Comp
L Device:C C?
U 1 1 6004D609
P 3800 2600
AR Path="/5F80B3E6/5FFE0A29/6004D609" Ref="C?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D609" Ref="C?"  Part="1" 
F 0 "C?" V 3548 2600 50  0000 C CNN
F 1 "1n" V 3639 2600 50  0000 C CNN
F 2 "" H 3838 2450 50  0001 C CNN
F 3 "~" H 3800 2600 50  0001 C CNN
	1    3800 2600
	0    1    1    0   
$EndComp
Wire Wire Line
	3650 2600 3400 2600
Wire Wire Line
	3400 2600 3400 2950
Wire Wire Line
	3950 2600 4350 2600
Wire Wire Line
	4350 2600 4350 2950
Connection ~ 4350 2950
Text GLabel 2900 2950 0    50   Input ~ 0
AREF_-10V
Wire Wire Line
	2900 2950 2950 2950
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 6004D616
P 2050 3350
AR Path="/5F80B3E6/5FFE0A29/6004D616" Ref="J?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D616" Ref="J?"  Part="1" 
F 0 "J?" H 2055 3692 50  0000 C CNN
F 1 "VOICE2_VO" H 2055 3601 50  0000 C CNN
F 2 "" H 2050 3350 50  0001 C CNN
F 3 "" H 2050 3350 50  0001 C CNN
	1    2050 3350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6004D61C
P 2450 3550
AR Path="/5F80B3E6/5FFE0A29/6004D61C" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D61C" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2450 3300 50  0001 C CNN
F 1 "GND" H 2455 3377 50  0000 C CNN
F 2 "" H 2450 3550 50  0001 C CNN
F 3 "" H 2450 3550 50  0001 C CNN
	1    2450 3550
	1    0    0    -1  
$EndComp
Wire Wire Line
	2250 3250 2450 3250
Text GLabel 4500 2950 2    50   Input ~ 0
VOICE2_VO_ADC
Wire Wire Line
	4500 2950 4350 2950
$Comp
L power:GND #PWR?
U 1 1 6004D629
P 2600 3750
AR Path="/5F80B3E6/6004D629" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/6004D629" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/6004D629" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D629" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2600 3500 50  0001 C CNN
F 1 "GND" H 2605 3577 50  0000 C CNN
F 2 "" H 2600 3750 50  0001 C CNN
F 3 "" H 2600 3750 50  0001 C CNN
	1    2600 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	2600 3700 2600 3750
Wire Wire Line
	2950 3350 2600 3350
Wire Wire Line
	2600 3350 2600 3400
$Comp
L Device:D_TVS D?
U 1 1 6004D632
P 2600 3550
AR Path="/5F80B3E6/5FBF977F/6004D632" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/6004D632" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6004D632" Ref="D?"  Part="1" 
F 0 "D?" V 2554 3630 50  0000 L CNN
F 1 "B72500D0160H060" V 2645 3630 50  0000 L CNN
F 2 "" H 2600 3550 50  0001 C CNN
F 3 "~" H 2600 3550 50  0001 C CNN
	1    2600 3550
	0    1    1    0   
$EndComp
Connection ~ 2600 3350
Wire Wire Line
	2250 3350 2300 3350
$Comp
L power:GND #PWR?
U 1 1 60051712
P 3800 5350
AR Path="/5F80B3E6/5FFE0A29/60051712" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051712" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 5100 50  0001 C CNN
F 1 "GND" H 3805 5177 50  0000 C CNN
F 2 "" H 3800 5350 50  0001 C CNN
F 3 "" H 3800 5350 50  0001 C CNN
	1    3800 5350
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 5300 3800 5350
$Comp
L power:+3.3VA #PWR?
U 1 1 60051719
P 3800 4850
AR Path="/5F80B3E6/5FFE0A29/60051719" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051719" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 4700 50  0001 C CNN
F 1 "+3.3VA" H 3815 5023 50  0000 C CNN
F 2 "" H 3800 4850 50  0001 C CNN
F 3 "" H 3800 4850 50  0001 C CNN
	1    3800 4850
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 4850 3800 4900
$Comp
L Device:R R?
U 1 1 60051720
P 3100 5000
AR Path="/5F80B3E6/5FFE0A29/60051720" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051720" Ref="R?"  Part="1" 
F 0 "R?" V 2893 5000 50  0000 C CNN
F 1 "100k" V 2984 5000 50  0000 C CNN
F 2 "" V 3030 5000 50  0001 C CNN
F 3 "~" H 3100 5000 50  0001 C CNN
	1    3100 5000
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 60051726
P 3800 4600
AR Path="/5F80B3E6/5FFE0A29/60051726" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051726" Ref="R?"  Part="1" 
F 0 "R?" V 3593 4600 50  0000 C CNN
F 1 "33k" V 3684 4600 50  0000 C CNN
F 2 "" V 3730 4600 50  0001 C CNN
F 3 "~" H 3800 4600 50  0001 C CNN
	1    3800 4600
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 6005172C
P 3100 4600
AR Path="/5F80B3E6/5FFE0A29/6005172C" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6005172C" Ref="R?"  Part="1" 
F 0 "R?" V 2893 4600 50  0000 C CNN
F 1 "140k" V 2984 4600 50  0000 C CNN
F 2 "" V 3030 4600 50  0001 C CNN
F 3 "~" H 3100 4600 50  0001 C CNN
	1    3100 4600
	0    1    1    0   
$EndComp
Wire Wire Line
	3500 5000 3400 5000
Wire Wire Line
	3400 5000 3400 4600
Wire Wire Line
	3400 4600 3650 4600
Connection ~ 3400 5000
Wire Wire Line
	3400 5000 3250 5000
Wire Wire Line
	3950 4600 4350 4600
Wire Wire Line
	4350 4600 4350 5100
Wire Wire Line
	4350 5100 4100 5100
Wire Wire Line
	3400 4600 3250 4600
Connection ~ 3400 4600
$Comp
L power:GND #PWR?
U 1 1 6005173C
P 3400 5350
AR Path="/5F80B3E6/5FFE0A29/6005173C" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6005173C" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3400 5100 50  0001 C CNN
F 1 "GND" H 3405 5177 50  0000 C CNN
F 2 "" H 3400 5350 50  0001 C CNN
F 3 "" H 3400 5350 50  0001 C CNN
	1    3400 5350
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 5200 3400 5200
Wire Wire Line
	3400 5200 3400 5350
$Comp
L Device:C C?
U 1 1 60051744
P 3800 4250
AR Path="/5F80B3E6/5FFE0A29/60051744" Ref="C?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051744" Ref="C?"  Part="1" 
F 0 "C?" V 3548 4250 50  0000 C CNN
F 1 "1n" V 3639 4250 50  0000 C CNN
F 2 "" H 3838 4100 50  0001 C CNN
F 3 "~" H 3800 4250 50  0001 C CNN
	1    3800 4250
	0    1    1    0   
$EndComp
Wire Wire Line
	3650 4250 3400 4250
Wire Wire Line
	3400 4250 3400 4600
Wire Wire Line
	3950 4250 4350 4250
Wire Wire Line
	4350 4250 4350 4600
Connection ~ 4350 4600
Text GLabel 2900 4600 0    50   Input ~ 0
AREF_-10V
Wire Wire Line
	2900 4600 2950 4600
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 60051751
P 2000 5000
AR Path="/5F80B3E6/5FFE0A29/60051751" Ref="J?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051751" Ref="J?"  Part="1" 
F 0 "J?" H 2005 5342 50  0000 C CNN
F 1 "VOICE3_VO" H 2005 5251 50  0000 C CNN
F 2 "" H 2000 5000 50  0001 C CNN
F 3 "" H 2000 5000 50  0001 C CNN
	1    2000 5000
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 60051757
P 2450 5200
AR Path="/5F80B3E6/5FFE0A29/60051757" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051757" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2450 4950 50  0001 C CNN
F 1 "GND" H 2455 5027 50  0000 C CNN
F 2 "" H 2450 5200 50  0001 C CNN
F 3 "" H 2450 5200 50  0001 C CNN
	1    2450 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	2200 4900 2450 4900
Text GLabel 4500 4600 2    50   Input ~ 0
VOICE3_VO_ADC
Wire Wire Line
	4500 4600 4350 4600
$Comp
L power:GND #PWR?
U 1 1 60051764
P 2600 5400
AR Path="/5F80B3E6/60051764" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/60051764" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/60051764" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60051764" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2600 5150 50  0001 C CNN
F 1 "GND" H 2605 5227 50  0000 C CNN
F 2 "" H 2600 5400 50  0001 C CNN
F 3 "" H 2600 5400 50  0001 C CNN
	1    2600 5400
	1    0    0    -1  
$EndComp
Wire Wire Line
	2600 5350 2600 5400
Wire Wire Line
	2950 5000 2600 5000
Wire Wire Line
	2600 5000 2600 5050
$Comp
L Device:D_TVS D?
U 1 1 6005176D
P 2600 5200
AR Path="/5F80B3E6/5FBF977F/6005176D" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/6005176D" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6005176D" Ref="D?"  Part="1" 
F 0 "D?" V 2554 5280 50  0000 L CNN
F 1 "B72500D0160H060" V 2645 5280 50  0000 L CNN
F 2 "" H 2600 5200 50  0001 C CNN
F 3 "~" H 2600 5200 50  0001 C CNN
	1    2600 5200
	0    1    1    0   
$EndComp
Connection ~ 2600 5000
Wire Wire Line
	2200 5000 2600 5000
$Comp
L power:GND #PWR?
U 1 1 6005647C
P 3800 7000
AR Path="/5F80B3E6/5FFE0A29/6005647C" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6005647C" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 6750 50  0001 C CNN
F 1 "GND" H 3805 6827 50  0000 C CNN
F 2 "" H 3800 7000 50  0001 C CNN
F 3 "" H 3800 7000 50  0001 C CNN
	1    3800 7000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 6950 3800 7000
$Comp
L power:+3.3VA #PWR?
U 1 1 60056483
P 3800 6500
AR Path="/5F80B3E6/5FFE0A29/60056483" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60056483" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3800 6350 50  0001 C CNN
F 1 "+3.3VA" H 3815 6673 50  0000 C CNN
F 2 "" H 3800 6500 50  0001 C CNN
F 3 "" H 3800 6500 50  0001 C CNN
	1    3800 6500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 6500 3800 6550
$Comp
L Device:R R?
U 1 1 6005648A
P 3100 6650
AR Path="/5F80B3E6/5FFE0A29/6005648A" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6005648A" Ref="R?"  Part="1" 
F 0 "R?" V 2893 6650 50  0000 C CNN
F 1 "100k" V 2984 6650 50  0000 C CNN
F 2 "" V 3030 6650 50  0001 C CNN
F 3 "~" H 3100 6650 50  0001 C CNN
	1    3100 6650
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 60056490
P 3800 6250
AR Path="/5F80B3E6/5FFE0A29/60056490" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60056490" Ref="R?"  Part="1" 
F 0 "R?" V 3593 6250 50  0000 C CNN
F 1 "33k" V 3684 6250 50  0000 C CNN
F 2 "" V 3730 6250 50  0001 C CNN
F 3 "~" H 3800 6250 50  0001 C CNN
	1    3800 6250
	0    1    1    0   
$EndComp
$Comp
L Device:R R?
U 1 1 60056496
P 3100 6250
AR Path="/5F80B3E6/5FFE0A29/60056496" Ref="R?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60056496" Ref="R?"  Part="1" 
F 0 "R?" V 2893 6250 50  0000 C CNN
F 1 "140k" V 2984 6250 50  0000 C CNN
F 2 "" V 3030 6250 50  0001 C CNN
F 3 "~" H 3100 6250 50  0001 C CNN
	1    3100 6250
	0    1    1    0   
$EndComp
Wire Wire Line
	3500 6650 3400 6650
Wire Wire Line
	3400 6650 3400 6250
Wire Wire Line
	3400 6250 3650 6250
Connection ~ 3400 6650
Wire Wire Line
	3400 6650 3250 6650
Wire Wire Line
	3950 6250 4350 6250
Wire Wire Line
	4350 6250 4350 6750
Wire Wire Line
	4350 6750 4100 6750
Wire Wire Line
	3400 6250 3250 6250
Connection ~ 3400 6250
$Comp
L power:GND #PWR?
U 1 1 600564A6
P 3400 7000
AR Path="/5F80B3E6/5FFE0A29/600564A6" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/600564A6" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 3400 6750 50  0001 C CNN
F 1 "GND" H 3405 6827 50  0000 C CNN
F 2 "" H 3400 7000 50  0001 C CNN
F 3 "" H 3400 7000 50  0001 C CNN
	1    3400 7000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3500 6850 3400 6850
Wire Wire Line
	3400 6850 3400 7000
$Comp
L Device:C C?
U 1 1 600564AE
P 3800 5900
AR Path="/5F80B3E6/5FFE0A29/600564AE" Ref="C?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/600564AE" Ref="C?"  Part="1" 
F 0 "C?" V 3548 5900 50  0000 C CNN
F 1 "1n" V 3639 5900 50  0000 C CNN
F 2 "" H 3838 5750 50  0001 C CNN
F 3 "~" H 3800 5900 50  0001 C CNN
	1    3800 5900
	0    1    1    0   
$EndComp
Wire Wire Line
	3650 5900 3400 5900
Wire Wire Line
	3400 5900 3400 6250
Wire Wire Line
	3950 5900 4350 5900
Wire Wire Line
	4350 5900 4350 6250
Connection ~ 4350 6250
Text GLabel 2900 6250 0    50   Input ~ 0
AREF_-10V
Wire Wire Line
	2900 6250 2950 6250
$Comp
L audiojack2_ground_switch-connector:AudioJack2_Ground_Switch-Connector J?
U 1 1 600564BB
P 2150 6650
AR Path="/5F80B3E6/5FFE0A29/600564BB" Ref="J?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/600564BB" Ref="J?"  Part="1" 
F 0 "J?" H 2155 6992 50  0000 C CNN
F 1 "FILTER_CUTOFF_VO" H 2155 6901 50  0000 C CNN
F 2 "" H 2150 6650 50  0001 C CNN
F 3 "" H 2150 6650 50  0001 C CNN
	1    2150 6650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 600564C1
P 2450 6850
AR Path="/5F80B3E6/5FFE0A29/600564C1" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/600564C1" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2450 6600 50  0001 C CNN
F 1 "GND" H 2455 6677 50  0000 C CNN
F 2 "" H 2450 6850 50  0001 C CNN
F 3 "" H 2450 6850 50  0001 C CNN
	1    2450 6850
	1    0    0    -1  
$EndComp
Wire Wire Line
	2350 6550 2450 6550
Wire Wire Line
	2450 6550 2450 6750
Wire Wire Line
	2350 6750 2450 6750
Connection ~ 2450 6750
Wire Wire Line
	2450 6750 2450 6850
Text GLabel 4500 6250 2    50   Input ~ 0
FILTER_CUTOFF_VO_ADC
Wire Wire Line
	4500 6250 4350 6250
$Comp
L power:GND #PWR?
U 1 1 600564CE
P 2600 7050
AR Path="/5F80B3E6/600564CE" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/600564CE" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/600564CE" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/600564CE" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 2600 6800 50  0001 C CNN
F 1 "GND" H 2605 6877 50  0000 C CNN
F 2 "" H 2600 7050 50  0001 C CNN
F 3 "" H 2600 7050 50  0001 C CNN
	1    2600 7050
	1    0    0    -1  
$EndComp
Wire Wire Line
	2600 7000 2600 7050
Wire Wire Line
	2950 6650 2600 6650
Wire Wire Line
	2600 6650 2600 6700
$Comp
L Device:D_TVS D?
U 1 1 600564D7
P 2600 6850
AR Path="/5F80B3E6/5FBF977F/600564D7" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/600564D7" Ref="D?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/600564D7" Ref="D?"  Part="1" 
F 0 "D?" V 2554 6930 50  0000 L CNN
F 1 "B72500D0160H060" V 2645 6930 50  0000 L CNN
F 2 "" H 2600 6850 50  0001 C CNN
F 3 "~" H 2600 6850 50  0001 C CNN
	1    2600 6850
	0    1    1    0   
$EndComp
Connection ~ 2600 6650
Wire Wire Line
	2350 6650 2600 6650
Text Notes 750  850  0    197  ~ 0
-3 to 7 Volts
$Comp
L power:GND #PWR?
U 1 1 6007942C
P 1450 1700
AR Path="/5F80B3E6/6007942C" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/6007942C" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/6007942C" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/6007942C" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 1450 1450 50  0001 C CNN
F 1 "GND" H 1455 1527 50  0000 C CNN
F 2 "" H 1450 1700 50  0001 C CNN
F 3 "" H 1450 1700 50  0001 C CNN
	1    1450 1700
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3VA #PWR?
U 1 1 60079432
P 1450 1400
AR Path="/5F80B3E6/60079432" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FBF977F/60079432" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/60079432" Ref="#PWR?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60079432" Ref="#PWR?"  Part="1" 
F 0 "#PWR?" H 1450 1250 50  0001 C CNN
F 1 "+3.3VA" H 1250 1450 50  0000 C CNN
F 2 "" H 1450 1400 50  0001 C CNN
F 3 "" H 1450 1400 50  0001 C CNN
	1    1450 1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 60079438
P 1450 1550
AR Path="/5F80B3E6/5FBF977F/60079438" Ref="C?"  Part="1" 
AR Path="/5F80B3E6/5FFE0A29/60079438" Ref="C?"  Part="1" 
AR Path="/5F80B3E6/6003DC97/60079438" Ref="C?"  Part="1" 
F 0 "C?" H 1565 1596 50  0000 L CNN
F 1 "100n" H 1565 1505 50  0000 L CNN
F 2 "" H 1488 1400 50  0001 C CNN
F 3 "~" H 1450 1550 50  0001 C CNN
	1    1450 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	2450 3250 2450 3550
Wire Wire Line
	2450 4900 2450 5200
Wire Wire Line
	2250 3450 2400 3450
Wire Wire Line
	2400 3450 2400 1700
Connection ~ 2400 1700
Wire Wire Line
	2400 1700 2600 1700
Wire Wire Line
	2200 5100 2300 5100
Wire Wire Line
	2300 5100 2300 3350
Connection ~ 2300 3350
Wire Wire Line
	2300 3350 2600 3350
$Comp
L Connector:TestPoint TP?
U 1 1 6012A5AD
P 4350 950
F 0 "TP?" V 4304 1138 50  0000 L CNN
F 1 "TestPoint" V 4395 1138 50  0000 L CNN
F 2 "" H 4550 950 50  0001 C CNN
F 3 "~" H 4550 950 50  0001 C CNN
	1    4350 950 
	0    1    1    0   
$EndComp
Connection ~ 4350 950 
$Comp
L Connector:TestPoint TP?
U 1 1 6012B37B
P 4350 2600
F 0 "TP?" V 4304 2788 50  0000 L CNN
F 1 "TestPoint" V 4395 2788 50  0000 L CNN
F 2 "" H 4550 2600 50  0001 C CNN
F 3 "~" H 4550 2600 50  0001 C CNN
	1    4350 2600
	0    1    1    0   
$EndComp
Connection ~ 4350 2600
$Comp
L Connector:TestPoint TP?
U 1 1 6012B7BB
P 4350 4250
F 0 "TP?" V 4304 4438 50  0000 L CNN
F 1 "TestPoint" V 4395 4438 50  0000 L CNN
F 2 "" H 4550 4250 50  0001 C CNN
F 3 "~" H 4550 4250 50  0001 C CNN
	1    4350 4250
	0    1    1    0   
$EndComp
Connection ~ 4350 4250
$Comp
L Connector:TestPoint TP?
U 1 1 6012CF08
P 4350 5900
F 0 "TP?" V 4304 6088 50  0000 L CNN
F 1 "TestPoint" V 4395 6088 50  0000 L CNN
F 2 "" H 4550 5900 50  0001 C CNN
F 3 "~" H 4550 5900 50  0001 C CNN
	1    4350 5900
	0    1    1    0   
$EndComp
Connection ~ 4350 5900
$EndSCHEMATC