Amplifiers.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 4
Title "MiniAmp DSP"
Date "2020-01-24"
Rev "v3r1"
Comp "SushiBits Innovation"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Amplifier_Audio:NS4248 U5
U 1 1 5FD3C8D4
P 3900 1950
F 0 "U5" H 3700 2450 50  0000 R CNN
F 1 "NS4248" H 4100 1450 50  0000 L CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 3900 1350 50  0001 C CNN
F 3 "" H 3900 1950 50  0001 C CNN
	1    3900 1950
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C8
U 1 1 5FD3E34E
P 4200 1350
F 0 "C8" V 4150 1300 50  0000 R CNN
F 1 "1µ" V 4150 1400 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4200 1350 50  0001 C CNN
F 3 "~" H 4200 1350 50  0001 C CNN
	1    4200 1350
	0    1    1    0   
$EndComp
$Comp
L Device:C_Small C7
U 1 1 5FD3F55F
P 4200 1250
F 0 "C7" V 4150 1200 50  0000 R CNN
F 1 "1µ" V 4150 1300 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4200 1250 50  0001 C CNN
F 3 "~" H 4200 1250 50  0001 C CNN
	1    4200 1250
	0    1    1    0   
$EndComp
$Comp
L Device:C_Small C6
U 1 1 5FD3F74E
P 4200 1150
F 0 "C6" V 4150 1100 50  0000 R CNN
F 1 "1µ" V 4150 1200 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4200 1150 50  0001 C CNN
F 3 "~" H 4200 1150 50  0001 C CNN
	1    4200 1150
	0    1    1    0   
$EndComp
Wire Wire Line
	4100 1350 4000 1350
Wire Wire Line
	4000 1350 4000 1450
Wire Wire Line
	4100 1250 3900 1250
Wire Wire Line
	3900 1250 3900 1350
Wire Wire Line
	4100 1150 3900 1150
Wire Wire Line
	3900 1150 3900 1250
Connection ~ 3900 1250
Wire Wire Line
	3900 1350 3800 1350
Wire Wire Line
	3800 1350 3800 1450
Connection ~ 3900 1350
Wire Wire Line
	3900 1350 3900 1450
$Comp
L Device:C_Small C5
U 1 1 5FD40EEC
P 4200 1050
F 0 "C5" V 4150 1000 50  0000 R CNN
F 1 "22µ" V 4150 1100 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4200 1050 50  0001 C CNN
F 3 "~" H 4200 1050 50  0001 C CNN
	1    4200 1050
	0    1    1    0   
$EndComp
Wire Wire Line
	4100 1050 3900 1050
Wire Wire Line
	3900 1050 3900 1150
Connection ~ 3900 1150
$Comp
L power:+5V #PWR0108
U 1 1 5FD411FF
P 3900 950
F 0 "#PWR0108" H 3900 800 50  0001 C CNN
F 1 "+5V" H 3915 1123 50  0000 C CNN
F 2 "" H 3900 950 50  0001 C CNN
F 3 "" H 3900 950 50  0001 C CNN
	1    3900 950 
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 950  3900 1050
Connection ~ 3900 1050
$Comp
L power:GND #PWR0109
U 1 1 5FD4146F
P 4500 1050
F 0 "#PWR0109" H 4500 800 50  0001 C CNN
F 1 "GND" V 4505 922 50  0000 R CNN
F 2 "" H 4500 1050 50  0001 C CNN
F 3 "" H 4500 1050 50  0001 C CNN
	1    4500 1050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4300 1050 4400 1050
Wire Wire Line
	4300 1350 4400 1350
Wire Wire Line
	4400 1350 4400 1250
Connection ~ 4400 1050
Wire Wire Line
	4400 1050 4500 1050
Wire Wire Line
	4300 1150 4400 1150
Connection ~ 4400 1150
Wire Wire Line
	4400 1150 4400 1050
Wire Wire Line
	4400 1250 4300 1250
Connection ~ 4400 1250
Wire Wire Line
	4400 1250 4400 1150
$Comp
L Device:C_Small C10
U 1 1 5FD43C2D
P 2600 1850
F 0 "C10" V 2550 1800 50  0000 R CNN
F 1 "1µ" V 2550 1900 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2600 1850 50  0001 C CNN
F 3 "~" H 2600 1850 50  0001 C CNN
	1    2600 1850
	0    1    1    0   
$EndComp
$Comp
L Device:C_Small C9
U 1 1 5FD43C33
P 2600 1750
F 0 "C9" V 2550 1700 50  0000 R CNN
F 1 "1µ" V 2550 1800 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2600 1750 50  0001 C CNN
F 3 "~" H 2600 1750 50  0001 C CNN
	1    2600 1750
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R8
U 1 1 5FD44DE3
P 3000 1750
F 0 "R8" V 2950 1650 50  0000 R CNN
F 1 "20k" V 2950 1850 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3000 1750 50  0001 C CNN
F 3 "~" H 3000 1750 50  0001 C CNN
	1    3000 1750
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R9
U 1 1 5FD45ADD
P 3000 1850
F 0 "R9" V 2950 1750 50  0000 R CNN
F 1 "20k" V 2950 1950 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3000 1850 50  0001 C CNN
F 3 "~" H 3000 1850 50  0001 C CNN
	1    3000 1850
	0    1    1    0   
$EndComp
Wire Wire Line
	3300 1750 3100 1750
Wire Wire Line
	3100 1850 3300 1850
Wire Wire Line
	2900 1850 2700 1850
Wire Wire Line
	2700 1750 2900 1750
Text HLabel 2400 1750 0    50   Input ~ 0
INL
Text HLabel 2400 1850 0    50   Input ~ 0
INR
Wire Wire Line
	2400 1750 2500 1750
Wire Wire Line
	2400 1850 2500 1850
Text Label 3000 2050 0    50   ~ 0
SHDN
Text Label 3000 2150 0    50   ~ 0
HPEN
Wire Wire Line
	3000 2150 3300 2150
$Comp
L power:GND #PWR0110
U 1 1 5FD48988
P 3800 2650
F 0 "#PWR0110" H 3800 2400 50  0001 C CNN
F 1 "GND" H 3805 2477 50  0000 C CNN
F 2 "" H 3800 2650 50  0001 C CNN
F 3 "" H 3800 2650 50  0001 C CNN
	1    3800 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 2450 3800 2550
Wire Wire Line
	3800 2550 3900 2550
Wire Wire Line
	4000 2550 4000 2450
Connection ~ 3800 2550
Wire Wire Line
	3800 2550 3800 2650
Wire Wire Line
	3900 2450 3900 2550
Connection ~ 3900 2550
Wire Wire Line
	3900 2550 4000 2550
$Comp
L 74xGxx:74LVC1G04 U6
U 1 1 5FD4A0B7
P 2100 2050
F 0 "U6" H 2200 2150 50  0000 L CNN
F 1 "74LVC1G04" H 2200 1950 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5" H 2100 2050 50  0001 C CNN
F 3 "http://www.ti.com/lit/sg/scyt129e/scyt129e.pdf" H 2100 2050 50  0001 C CNN
	1    2100 2050
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0111
U 1 1 5FD4B85C
P 2100 1850
F 0 "#PWR0111" H 2100 1700 50  0001 C CNN
F 1 "+5V" H 2115 2023 50  0000 C CNN
F 2 "" H 2100 1850 50  0001 C CNN
F 3 "" H 2100 1850 50  0001 C CNN
	1    2100 1850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0112
U 1 1 5FD4BA2D
P 2100 2250
F 0 "#PWR0112" H 2100 2000 50  0001 C CNN
F 1 "GND" H 2105 2077 50  0000 C CNN
F 2 "" H 2100 2250 50  0001 C CNN
F 3 "" H 2100 2250 50  0001 C CNN
	1    2100 2250
	1    0    0    -1  
$EndComp
Wire Wire Line
	2100 1850 2100 1950
Wire Wire Line
	2100 2150 2100 2250
Wire Wire Line
	2350 2050 3300 2050
Text HLabel 1700 2050 0    50   Input ~ 0
PGOOD
Wire Wire Line
	1700 2050 1800 2050
$Comp
L Device:Ferrite_Bead_Small FB1
U 1 1 5FD4DDBF
P 5100 1750
F 0 "FB1" V 5050 1700 50  0000 R CNN
F 1 "1k" V 5050 1850 50  0000 L CNN
F 2 "Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder" V 5030 1750 50  0001 C CNN
F 3 "~" H 5100 1750 50  0001 C CNN
	1    5100 1750
	0    1    1    0   
$EndComp
$Comp
L Device:Ferrite_Bead_Small FB2
U 1 1 5FD4EC51
P 5100 1850
F 0 "FB2" V 5050 1800 50  0000 R CNN
F 1 "1k" V 5050 1950 50  0000 L CNN
F 2 "Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder" V 5030 1850 50  0001 C CNN
F 3 "~" H 5100 1850 50  0001 C CNN
	1    5100 1850
	0    1    1    0   
$EndComp
$Comp
L Device:Ferrite_Bead_Small FB3
U 1 1 5FD4F94D
P 5100 2050
F 0 "FB3" V 5050 2000 50  0000 R CNN
F 1 "1k" V 5050 2150 50  0000 L CNN
F 2 "Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder" V 5030 2050 50  0001 C CNN
F 3 "~" H 5100 2050 50  0001 C CNN
	1    5100 2050
	0    1    1    0   
$EndComp
$Comp
L Device:Ferrite_Bead_Small FB4
U 1 1 5FD50199
P 5100 2150
F 0 "FB4" V 5050 2100 50  0000 R CNN
F 1 "1k" V 5050 2250 50  0000 L CNN
F 2 "Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder" V 5030 2150 50  0001 C CNN
F 3 "~" H 5100 2150 50  0001 C CNN
	1    5100 2150
	0    1    1    0   
$EndComp
$Comp
L Device:C_Small C11
U 1 1 5FD509F4
P 5300 2350
F 0 "C11" H 5392 2396 50  0000 L CNN
F 1 "1n" H 5392 2305 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 5300 2350 50  0001 C CNN
F 3 "~" H 5300 2350 50  0001 C CNN
	1    5300 2350
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C12
U 1 1 5FD513D5
P 5600 2350
F 0 "C12" H 5692 2396 50  0000 L CNN
F 1 "1n" H 5692 2305 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 5600 2350 50  0001 C CNN
F 3 "~" H 5600 2350 50  0001 C CNN
	1    5600 2350
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C13
U 1 1 5FD5251C
P 5900 2350
F 0 "C13" H 5992 2396 50  0000 L CNN
F 1 "1n" H 5992 2305 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 5900 2350 50  0001 C CNN
F 3 "~" H 5900 2350 50  0001 C CNN
	1    5900 2350
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C14
U 1 1 5FD52522
P 6200 2350
F 0 "C14" H 6292 2396 50  0000 L CNN
F 1 "1n" H 6292 2305 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 6200 2350 50  0001 C CNN
F 3 "~" H 6200 2350 50  0001 C CNN
	1    6200 2350
	1    0    0    -1  
$EndComp
$Comp
L Device:CP_Small C15
U 1 1 5FD530B1
P 6500 2350
F 0 "C15" H 6588 2396 50  0000 L CNN
F 1 "100µ" H 6588 2305 50  0000 L CNN
F 2 "Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B_Pad1.50x2.35mm_HandSolder" H 6500 2350 50  0001 C CNN
F 3 "~" H 6500 2350 50  0001 C CNN
	1    6500 2350
	1    0    0    -1  
$EndComp
$Comp
L Device:CP_Small C16
U 1 1 5FD53BD6
P 6900 2350
F 0 "C16" H 6988 2396 50  0000 L CNN
F 1 "100µ" H 6988 2305 50  0000 L CNN
F 2 "Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B_Pad1.50x2.35mm_HandSolder" H 6900 2350 50  0001 C CNN
F 3 "~" H 6900 2350 50  0001 C CNN
	1    6900 2350
	1    0    0    -1  
$EndComp
$Comp
L Connector:Screw_Terminal_01x02 J2
U 1 1 5FD5459B
P 7500 1850
F 0 "J2" H 7600 1750 50  0000 L CNN
F 1 "SPKL" H 7600 1850 50  0000 L CNN
F 2 "TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal" H 7500 1850 50  0001 C CNN
F 3 "~" H 7500 1850 50  0001 C CNN
	1    7500 1850
	1    0    0    1   
$EndComp
$Comp
L Connector:Screw_Terminal_01x02 J3
U 1 1 5FD556C6
P 7500 2150
F 0 "J3" H 7600 2050 50  0000 L CNN
F 1 "SPKR" H 7600 2150 50  0000 L CNN
F 2 "TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal" H 7500 2150 50  0001 C CNN
F 3 "~" H 7500 2150 50  0001 C CNN
	1    7500 2150
	1    0    0    1   
$EndComp
Wire Wire Line
	5200 1750 5300 1750
Wire Wire Line
	7300 1850 6500 1850
Wire Wire Line
	5200 2050 5900 2050
Wire Wire Line
	5200 2150 6200 2150
Wire Wire Line
	5300 2250 5300 1750
Connection ~ 5300 1750
Wire Wire Line
	5300 1750 7300 1750
Wire Wire Line
	5600 2250 5600 1850
Connection ~ 5600 1850
Wire Wire Line
	5600 1850 5200 1850
Wire Wire Line
	5900 2250 5900 2050
Connection ~ 5900 2050
Wire Wire Line
	5900 2050 7300 2050
Wire Wire Line
	6200 2250 6200 2150
Connection ~ 6200 2150
Wire Wire Line
	6200 2150 6900 2150
Wire Wire Line
	6500 2250 6500 1850
Connection ~ 6500 1850
Wire Wire Line
	6500 1850 5600 1850
Wire Wire Line
	6900 2250 6900 2150
Connection ~ 6900 2150
Wire Wire Line
	6900 2150 7300 2150
Text Label 4800 1750 2    50   ~ 0
OUTL-
Wire Wire Line
	4500 1750 5000 1750
Wire Wire Line
	4500 1850 5000 1850
Wire Wire Line
	4500 2050 5000 2050
Wire Wire Line
	4500 2150 5000 2150
Text Label 4800 1850 2    50   ~ 0
OUTL+
Text Label 4800 2050 2    50   ~ 0
OUTR-
Text Label 4800 2150 2    50   ~ 0
OUTR+
Text Label 7000 1750 0    50   ~ 0
SPKL-
Text Label 7000 1850 0    50   ~ 0
SPKL+
Text Label 7000 2050 0    50   ~ 0
SPKR-
Text Label 7000 2150 0    50   ~ 0
SPKR+
Wire Wire Line
	4000 2550 5300 2550
Wire Wire Line
	6200 2550 6200 2450
Connection ~ 4000 2550
Wire Wire Line
	5900 2450 5900 2550
Connection ~ 5900 2550
Wire Wire Line
	5900 2550 6200 2550
Wire Wire Line
	5600 2450 5600 2550
Connection ~ 5600 2550
Wire Wire Line
	5600 2550 5900 2550
Wire Wire Line
	5300 2450 5300 2550
Connection ~ 5300 2550
Wire Wire Line
	5300 2550 5600 2550
$Comp
L Connector:AudioJack3_Ground_Switch J4
U 1 1 5FD7C0DE
P 7500 2900
F 0 "J4" H 7268 2779 50  0000 R CNN
F 1 "Headphone" H 7268 2870 50  0000 R CNN
F 2 "Connector_Audio:Jack_3.5mm_Ledino_KB3SPRS_Horizontal" H 7500 2900 50  0001 C CNN
F 3 "~" H 7500 2900 50  0001 C CNN
	1    7500 2900
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR0113
U 1 1 5FD7D6EC
P 6500 3400
F 0 "#PWR0113" H 6500 3150 50  0001 C CNN
F 1 "GND" H 6505 3227 50  0000 C CNN
F 2 "" H 6500 3400 50  0001 C CNN
F 3 "" H 6500 3400 50  0001 C CNN
	1    6500 3400
	1    0    0    -1  
$EndComp
Text Label 7000 2600 0    50   ~ 0
HPDET
Text Label 7000 2700 0    50   ~ 0
HPL
Text Label 7000 2900 0    50   ~ 0
HPR
NoConn ~ 7300 2800
Wire Wire Line
	7300 2600 7000 2600
Wire Wire Line
	6500 2700 6500 2450
Wire Wire Line
	6500 2700 7300 2700
Wire Wire Line
	6900 2900 6900 2450
Wire Wire Line
	6900 2900 7300 2900
$Comp
L Device:R_Small R10
U 1 1 5FD8847C
P 2800 3200
F 0 "R10" H 2859 3246 50  0000 L CNN
F 1 "4.99k" H 2859 3155 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2800 3200 50  0001 C CNN
F 3 "~" H 2800 3200 50  0001 C CNN
	1    2800 3200
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R11
U 1 1 5FD889D4
P 2800 3800
F 0 "R11" H 2859 3846 50  0000 L CNN
F 1 "4.99k" H 2859 3755 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2800 3800 50  0001 C CNN
F 3 "~" H 2800 3800 50  0001 C CNN
	1    2800 3800
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R12
U 1 1 5FD8A283
P 2800 4400
F 0 "R12" H 2859 4446 50  0000 L CNN
F 1 "4.99k" H 2859 4355 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2800 4400 50  0001 C CNN
F 3 "~" H 2800 4400 50  0001 C CNN
	1    2800 4400
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R13
U 1 1 5FD8BADE
P 3200 3200
F 0 "R13" H 3259 3246 50  0000 L CNN
F 1 "10k" H 3259 3155 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3200 3200 50  0001 C CNN
F 3 "~" H 3200 3200 50  0001 C CNN
	1    3200 3200
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R14
U 1 1 5FD8BED7
P 3200 4400
F 0 "R14" H 3259 4446 50  0000 L CNN
F 1 "10k" H 3259 4355 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3200 4400 50  0001 C CNN
F 3 "~" H 3200 4400 50  0001 C CNN
	1    3200 4400
	1    0    0    -1  
$EndComp
$Comp
L Comparator:LM393 U7
U 1 1 5FD8C443
P 3600 4100
F 0 "U7" H 3550 4300 50  0000 L CNN
F 1 "LM393" H 3550 3900 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3600 4100 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm393-n.pdf" H 3600 4100 50  0001 C CNN
	1    3600 4100
	1    0    0    -1  
$EndComp
$Comp
L Comparator:LM393 U7
U 2 1 5FD8CFF0
P 3600 3500
F 0 "U7" H 3550 3700 50  0000 L CNN
F 1 "LM393" H 3550 3300 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3600 3500 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm393-n.pdf" H 3600 3500 50  0001 C CNN
	2    3600 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3200 3300 3200 3600
Wire Wire Line
	2800 3300 2800 3400
Wire Wire Line
	3300 3400 2800 3400
Connection ~ 2800 3400
Wire Wire Line
	2800 3400 2800 3700
Wire Wire Line
	3300 3600 3200 3600
Connection ~ 3200 3600
Wire Wire Line
	3200 3600 3200 3800
Wire Wire Line
	3300 4000 3200 4000
Connection ~ 3200 4000
Wire Wire Line
	3200 4000 3200 4300
Wire Wire Line
	2800 3900 2800 4200
Wire Wire Line
	3300 4200 2800 4200
Connection ~ 2800 4200
Wire Wire Line
	2800 4200 2800 4300
$Comp
L Comparator:LM393 U7
U 3 1 5FD9CD01
P 2500 3800
F 0 "U7" H 2458 3846 50  0000 L CNN
F 1 "LM393" H 2458 3755 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 2500 3800 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm393-n.pdf" H 2500 3800 50  0001 C CNN
	3    2500 3800
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C17
U 1 1 5FD9D4C7
P 2100 3800
F 0 "C17" H 2192 3846 50  0000 L CNN
F 1 "1µ" H 2192 3755 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2100 3800 50  0001 C CNN
F 3 "~" H 2100 3800 50  0001 C CNN
	1    2100 3800
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0114
U 1 1 5FD9E322
P 2100 2900
F 0 "#PWR0114" H 2100 2750 50  0001 C CNN
F 1 "+5V" H 2115 3073 50  0000 C CNN
F 2 "" H 2100 2900 50  0001 C CNN
F 3 "" H 2100 2900 50  0001 C CNN
	1    2100 2900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0115
U 1 1 5FD9ECA5
P 2100 4700
F 0 "#PWR0115" H 2100 4450 50  0001 C CNN
F 1 "GND" H 2105 4527 50  0000 C CNN
F 2 "" H 2100 4700 50  0001 C CNN
F 3 "" H 2100 4700 50  0001 C CNN
	1    2100 4700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3200 3100 3200 3000
Wire Wire Line
	3200 3000 2800 3000
Wire Wire Line
	2100 3000 2100 2900
Wire Wire Line
	2100 3000 2100 3700
Connection ~ 2100 3000
Wire Wire Line
	2400 3500 2400 3000
Connection ~ 2400 3000
Wire Wire Line
	2400 3000 2100 3000
Wire Wire Line
	2100 4700 2100 4600
Wire Wire Line
	2100 4600 2400 4600
Wire Wire Line
	3200 4600 3200 4500
Wire Wire Line
	2800 4500 2800 4600
Connection ~ 2800 4600
Wire Wire Line
	2800 4600 3200 4600
Wire Wire Line
	2400 4100 2400 4600
Connection ~ 2400 4600
Wire Wire Line
	2400 4600 2800 4600
Wire Wire Line
	2100 3900 2100 4600
Connection ~ 2100 4600
Wire Wire Line
	2800 3100 2800 3000
Connection ~ 2800 3000
Wire Wire Line
	2800 3000 2400 3000
Text Label 3500 3800 2    50   ~ 0
HPDET
Wire Wire Line
	3500 3800 3200 3800
Connection ~ 3200 3800
Wire Wire Line
	3200 3800 3200 4000
$Comp
L Device:R_Small R15
U 1 1 5FDBEB3D
P 4000 3200
F 0 "R15" H 4059 3246 50  0000 L CNN
F 1 "49.9k" H 4059 3155 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4000 3200 50  0001 C CNN
F 3 "~" H 4000 3200 50  0001 C CNN
	1    4000 3200
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C18
U 1 1 5FDBEF4D
P 4000 4400
F 0 "C18" H 4092 4446 50  0000 L CNN
F 1 "1µ" H 4092 4355 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4000 4400 50  0001 C CNN
F 3 "~" H 4000 4400 50  0001 C CNN
	1    4000 4400
	1    0    0    -1  
$EndComp
Wire Wire Line
	4000 3300 4000 3500
Wire Wire Line
	3900 4100 4000 4100
Connection ~ 4000 4100
Wire Wire Line
	4000 4100 4000 4300
Wire Wire Line
	3900 3500 4000 3500
Connection ~ 4000 3500
Wire Wire Line
	4000 3500 4000 3800
Wire Wire Line
	3200 3000 4000 3000
Wire Wire Line
	4000 3000 4000 3100
Connection ~ 3200 3000
Wire Wire Line
	3200 4600 4000 4600
Wire Wire Line
	4000 4600 4000 4500
Connection ~ 3200 4600
$Comp
L 74xGxx:74LVC1G17 U8
U 1 1 5FDCFC27
P 4400 3800
F 0 "U8" H 4500 4000 50  0000 L CNN
F 1 "74LVC1G17" H 4500 3900 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5" H 4400 3800 50  0001 C CNN
F 3 "http://www.ti.com/lit/sg/scyt129e/scyt129e.pdf" H 4400 3800 50  0001 C CNN
	1    4400 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	4000 3000 4400 3000
Wire Wire Line
	4400 3000 4400 3700
Connection ~ 4000 3000
Wire Wire Line
	4000 4600 4400 4600
Wire Wire Line
	4400 4600 4400 3900
Connection ~ 4000 4600
Wire Wire Line
	4100 3800 4000 3800
Connection ~ 4000 3800
Wire Wire Line
	4000 3800 4000 4100
Text Label 4900 3800 2    50   ~ 0
HPEN
Wire Wire Line
	4900 3800 4650 3800
$Comp
L Device:R_Small R16
U 1 1 5FE61E7E
P 6500 3100
F 0 "R16" H 6559 3146 50  0000 L CNN
F 1 "1k" H 6559 3055 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 6500 3100 50  0001 C CNN
F 3 "~" H 6500 3100 50  0001 C CNN
	1    6500 3100
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R17
U 1 1 5FE62509
P 6900 3100
F 0 "R17" H 6959 3146 50  0000 L CNN
F 1 "1k" H 6959 3055 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 6900 3100 50  0001 C CNN
F 3 "~" H 6900 3100 50  0001 C CNN
	1    6900 3100
	1    0    0    -1  
$EndComp
Wire Wire Line
	6900 2900 6900 3000
Connection ~ 6900 2900
Wire Wire Line
	6500 2700 6500 3000
Connection ~ 6500 2700
Wire Wire Line
	6500 3200 6500 3300
Wire Wire Line
	6500 3300 6900 3300
Wire Wire Line
	7200 3300 7200 3000
Wire Wire Line
	7200 3000 7300 3000
Connection ~ 6500 3300
Wire Wire Line
	6500 3300 6500 3400
Wire Wire Line
	6900 3200 6900 3300
Connection ~ 6900 3300
Wire Wire Line
	6900 3300 7200 3300
$Comp
L 74xGxx:74LVC1G02 U9
U 1 1 5FEC4602
P 5200 3850
F 0 "U9" H 5300 4050 50  0000 L CNN
F 1 "74LVC1G02" H 5300 3700 50  0000 L CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5" H 5200 3850 50  0001 C CNN
F 3 "http://www.ti.com/lit/sg/scyt129e/scyt129e.pdf" H 5200 3850 50  0001 C CNN
	1    5200 3850
	1    0    0    -1  
$EndComp
Text Label 4700 3900 0    50   ~ 0
SHDN
Wire Wire Line
	4700 3900 4900 3900
Wire Wire Line
	4400 4600 5200 4600
Wire Wire Line
	5200 4600 5200 4050
Connection ~ 4400 4600
Wire Wire Line
	4400 3000 5200 3000
Wire Wire Line
	5200 3000 5200 3650
Connection ~ 4400 3000
Text Label 5650 3850 2    50   ~ 0
CEN
Wire Wire Line
	5650 3850 5450 3850
$Comp
L Amplifier_Audio:BL6281 U10
U 1 1 5FEDA74F
P 3000 5600
F 0 "U10" H 3100 5800 50  0000 L CNN
F 1 "BL6281" H 3100 5400 50  0000 L CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3000 5600 50  0001 C CNN
F 3 "" H 3000 5600 50  0001 C CNN
	1    3000 5600
	1    0    0    -1  
$EndComp
Text Label 2300 6100 0    50   ~ 0
CEN
$Comp
L Device:C_Small C19
U 1 1 5FEDC5FA
P 2400 5200
F 0 "C19" V 2171 5200 50  0000 C CNN
F 1 "1µ" V 2262 5200 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2400 5200 50  0001 C CNN
F 3 "~" H 2400 5200 50  0001 C CNN
	1    2400 5200
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R18
U 1 1 5FEDDFD4
P 2400 5700
F 0 "R18" V 2204 5700 50  0000 C CNN
F 1 "20k" V 2295 5700 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2400 5700 50  0001 C CNN
F 3 "~" H 2400 5700 50  0001 C CNN
	1    2400 5700
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R19
U 1 1 5FEDE8E2
P 3200 6000
F 0 "R19" V 3100 6000 50  0000 C CNN
F 1 "20k" V 3300 6000 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3200 6000 50  0001 C CNN
F 3 "~" H 3200 6000 50  0001 C CNN
	1    3200 6000
	0    1    1    0   
$EndComp
Wire Wire Line
	3300 5700 3400 5700
Wire Wire Line
	3400 5700 3400 6000
Wire Wire Line
	3400 6000 3300 6000
Wire Wire Line
	3100 6000 2600 6000
Wire Wire Line
	2600 6000 2600 5700
Wire Wire Line
	2600 5700 2700 5700
Wire Wire Line
	2600 5700 2500 5700
Connection ~ 2600 5700
Wire Wire Line
	2500 5200 2600 5200
Wire Wire Line
	2900 5200 2900 5300
Wire Wire Line
	2700 5500 2600 5500
Wire Wire Line
	2600 5500 2600 5200
Connection ~ 2600 5200
Wire Wire Line
	2600 5200 2900 5200
$Comp
L power:GND #PWR0116
U 1 1 5FF0939C
P 3000 6100
F 0 "#PWR0116" H 3000 5850 50  0001 C CNN
F 1 "GND" H 3005 5927 50  0000 C CNN
F 2 "" H 3000 6100 50  0001 C CNN
F 3 "" H 3000 6100 50  0001 C CNN
	1    3000 6100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0117
U 1 1 5FF09848
P 2200 5200
F 0 "#PWR0117" H 2200 4950 50  0001 C CNN
F 1 "GND" V 2205 5072 50  0000 R CNN
F 2 "" H 2200 5200 50  0001 C CNN
F 3 "" H 2200 5200 50  0001 C CNN
	1    2200 5200
	0    1    1    0   
$EndComp
Wire Wire Line
	2200 5200 2300 5200
Wire Wire Line
	3000 5900 3000 6100
$Comp
L Device:C_Small C20
U 1 1 5FF15E60
P 3200 5200
F 0 "C20" V 2971 5200 50  0000 C CNN
F 1 "1µ" V 3062 5200 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3200 5200 50  0001 C CNN
F 3 "~" H 3200 5200 50  0001 C CNN
	1    3200 5200
	0    1    1    0   
$EndComp
$Comp
L power:+5V #PWR0118
U 1 1 5FF16900
P 3000 5100
F 0 "#PWR0118" H 3000 4950 50  0001 C CNN
F 1 "+5V" H 3015 5273 50  0000 C CNN
F 2 "" H 3000 5100 50  0001 C CNN
F 3 "" H 3000 5100 50  0001 C CNN
	1    3000 5100
	1    0    0    -1  
$EndComp
Wire Wire Line
	3000 5100 3000 5200
Wire Wire Line
	3100 5200 3000 5200
Connection ~ 3000 5200
Wire Wire Line
	3000 5200 3000 5300
$Comp
L power:GND #PWR0119
U 1 1 5FF234C8
P 3400 5200
F 0 "#PWR0119" H 3400 4950 50  0001 C CNN
F 1 "GND" V 3405 5072 50  0000 R CNN
F 2 "" H 3400 5200 50  0001 C CNN
F 3 "" H 3400 5200 50  0001 C CNN
	1    3400 5200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3400 5200 3300 5200
Wire Wire Line
	2300 6100 2900 6100
Wire Wire Line
	2900 6100 2900 5900
$Comp
L Device:C_Small C21
U 1 1 5FF48F86
P 2100 5700
F 0 "C21" V 1871 5700 50  0000 C CNN
F 1 "1µ" V 1962 5700 50  0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2100 5700 50  0001 C CNN
F 3 "~" H 2100 5700 50  0001 C CNN
	1    2100 5700
	0    1    1    0   
$EndComp
Wire Wire Line
	2200 5700 2300 5700
Text HLabel 1900 5700 0    50   Input ~ 0
INC
Wire Wire Line
	1900 5700 2000 5700
$Comp
L Connector:Screw_Terminal_01x02 J5
U 1 1 5FF61CF1
P 3900 5500
F 0 "J5" H 3980 5492 50  0000 L CNN
F 1 "SPKC" H 3980 5401 50  0000 L CNN
F 2 "TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal" H 3900 5500 50  0001 C CNN
F 3 "~" H 3900 5500 50  0001 C CNN
	1    3900 5500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3700 5500 3300 5500
Wire Wire Line
	3700 5600 3400 5600
Wire Wire Line
	3400 5600 3400 5700
Connection ~ 3400 5700
Text Label 3400 5500 0    50   ~ 0
SPKC+
Text Label 3400 5600 0    50   ~ 0
SPKC-
$Comp
L Connector:TestPoint TP6
U 1 1 5FFAC8FA
P 3800 1050
F 0 "TP6" V 3995 1122 50  0000 C CNN
F 1 "5V" V 3904 1122 50  0000 C CNN
F 2 "TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded" H 4000 1050 50  0001 C CNN
F 3 "~" H 4000 1050 50  0001 C CNN
	1    3800 1050
	0    -1   -1   0   
$EndComp
$Comp
L Connector:TestPoint TP7
U 1 1 5FFAD034
P 4000 2650
F 0 "TP7" H 3942 2676 50  0000 R CNN
F 1 "GND" H 3942 2767 50  0000 R CNN
F 2 "TestPoint:TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded" H 4200 2650 50  0001 C CNN
F 3 "~" H 4200 2650 50  0001 C CNN
	1    4000 2650
	-1   0    0    1   
$EndComp
Wire Wire Line
	3800 1050 3900 1050
Wire Wire Line
	4000 2650 4000 2550
Text HLabel 3000 2150 0    50   Output ~ 0
HPEN
$EndSCHEMATC