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path: root/audio_out.sch
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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: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:dr-audio
LIBS:stm32
LIBS:dr-power
LIBS:dr-usb
LIBS:dr-mechanical
LIBS:dr-logic
LIBS:samdac-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 5
Title "Digital to analogue converter and line output"
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Rev ""
Comp ""
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Comment2 ""
Comment3 ""
Comment4 ""
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F 3 "" H 6600 5550 50  0000 C CNN
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F 3 "" H 11000 6100 50  0000 C CNN
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6700 5600
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Connection ~ 8200 6100
Wire Wire Line
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Connection ~ 8200 5600
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Connection ~ 9650 6100
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F 3 "" H 2650 1200 50  0000 C CNN
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F 3 "" H 2250 1200 50  0000 C CNN
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F 3 "" H 1950 1400 50  0000 C CNN
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F 3 "" H 2250 1500 50  0000 C CNN
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F 3 "" H 2650 1500 50  0000 C CNN
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Text Label 1700 1750 0    60   ~ 0
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F 3 "" H 1950 2100 50  0000 C CNN
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Connection ~ 2250 1750
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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F 3 "" H 2800 2950 50  0000 C CNN
	1    2800 2950
	1    0    0    -1  
$EndComp
Text Label 2250 2800 0    60   ~ 0
3v3-DAC-A
Wire Wire Line
	3200 3100 2150 3100
Wire Wire Line
	2150 3100 2150 3150
Connection ~ 2800 3100
Connection ~ 2400 3100
Connection ~ 2400 2800
Connection ~ 2800 2800
$Comp
L GNDA #PWR042
U 1 1 56CA4340
P 2150 3150
F 0 "#PWR042" H 2150 2900 50  0001 C CNN
F 1 "GNDA" H 2158 2976 50  0000 C CNN
F 2 "" H 2150 3150 50  0000 C CNN
F 3 "" H 2150 3150 50  0000 C CNN
	1    2150 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	4450 2150 4800 2150
Wire Wire Line
	4800 2150 4800 2400
Wire Wire Line
	4450 2250 4800 2250
Connection ~ 4800 2250
$Comp
L GND #PWR043
U 1 1 56CA51D4
P 4800 2400
F 0 "#PWR043" H 4800 2150 50  0001 C CNN
F 1 "GND" H 4808 2226 50  0000 C CNN
F 2 "" H 4800 2400 50  0000 C CNN
F 3 "" H 4800 2400 50  0000 C CNN
	1    4800 2400
	1    0    0    -1  
$EndComp
Wire Wire Line
	4450 2350 4800 2350
Connection ~ 4800 2350
NoConn ~ 4450 1850
Wire Wire Line
	4450 2050 5050 2050
Wire Wire Line
	5350 2050 6900 2050
Text HLabel 6900 2050 2    60   Input ~ 0
XSMT
$Comp
L R R15
U 1 1 56CA612F
P 5850 1900
F 0 "R15" H 5920 1946 50  0000 L CNN
F 1 "10K" H 5920 1854 50  0000 L CNN
F 2 "Resistors_SMD:R_0805" V 5780 1900 50  0001 C CNN
F 3 "" H 5850 1900 50  0000 C CNN
	1    5850 1900
	1    0    0    -1  
$EndComp
$Comp
L R R16
U 1 1 56CA619D
P 5850 2650
F 0 "R16" H 5920 2696 50  0000 L CNN
F 1 "10K" H 5920 2604 50  0000 L CNN
F 2 "Resistors_SMD:R_0805" V 5780 2650 50  0001 C CNN
F 3 "" H 5850 2650 50  0000 C CNN
	1    5850 2650
	1    0    0    -1  
$EndComp
Connection ~ 5850 2050
Wire Wire Line
	5850 1750 5850 1700
$Comp
L GND #PWR044
U 1 1 56CA6302
P 5850 2850
F 0 "#PWR044" H 5850 2600 50  0001 C CNN
F 1 "GND" H 5858 2676 50  0000 C CNN
F 2 "" H 5850 2850 50  0000 C CNN
F 3 "" H 5850 2850 50  0000 C CNN
	1    5850 2850
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR045
U 1 1 56CA638E
P 5850 1700
F 0 "#PWR045" H 5850 1550 50  0001 C CNN
F 1 "+5V" H 5868 1874 50  0000 C CNN
F 2 "" H 5850 1700 50  0000 C CNN
F 3 "" H 5850 1700 50  0000 C CNN
	1    5850 1700
	1    0    0    -1  
$EndComp
$Comp
L R R23
U 1 1 56CA6B19
P 5850 2200
F 0 "R23" H 5920 2246 50  0000 L CNN
F 1 "10K" H 5920 2154 50  0000 L CNN
F 2 "Resistors_SMD:R_0805" V 5780 2200 50  0001 C CNN
F 3 "" H 5850 2200 50  0000 C CNN
	1    5850 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	5850 2350 5850 2500
Wire Wire Line
	5850 2800 5850 2850
Text Label 5850 2450 0    60   ~ 0
XSMT_PD_MID
Wire Notes Line
	5650 1450 5650 3150
Wire Notes Line
	5650 3150 6600 3150
Wire Notes Line
	6600 3150 6600 1450
Wire Notes Line
	6600 1450 5650 1450
Text Notes 5650 1400 0    60   ~ 0
Soft-mute hard shutdown,\nso if 5v rail collapses then\nthe entire DAC mutes hard.
$Comp
L R R22
U 1 1 56CA8204
P 5200 2050
F 0 "R22" V 4992 2050 50  0000 C CNN
F 1 "22R" V 5084 2050 50  0000 C CNN
F 2 "Resistors_SMD:R_0805" V 5130 2050 50  0001 C CNN
F 3 "" H 5200 2050 50  0000 C CNN
	1    5200 2050
	0    1    1    0   
$EndComp
$Comp
L CP C47
U 1 1 56CBA8FC
P 8200 5850
F 0 "C47" H 8318 5896 50  0000 L CNN
F 1 "100uF" H 8318 5804 50  0000 L CNN
F 2 "Capacitors_ThroughHole:C_Radial_D7.5_L11.2_P2.5" H 8238 5700 50  0001 C CNN
F 3 "" H 8200 5850 50  0000 C CNN
	1    8200 5850
	1    0    0    -1  
$EndComp
$Comp
L CP C48
U 1 1 56CBA9E3
P 9650 5850
F 0 "C48" H 9768 5896 50  0000 L CNN
F 1 "100uF" H 9768 5804 50  0000 L CNN
F 2 "Capacitors_ThroughHole:C_Radial_D7.5_L11.2_P2.5" H 9688 5700 50  0001 C CNN
F 3 "" H 9650 5850 50  0000 C CNN
	1    9650 5850
	1    0    0    -1  
$EndComp
Wire Wire Line
	8650 5700 8650 5600
Connection ~ 8650 5600
Wire Wire Line
	8650 6000 8650 6100
Connection ~ 8650 6100
Wire Wire Line
	10700 6000 10700 6100
Connection ~ 10700 6100
Wire Wire Line
	10700 5700 10700 5600
Connection ~ 10700 5600
Text Label 3050 2250 0    60   ~ 0
CAPM
Text Label 3050 2150 0    60   ~ 0
CAPP
Text Label 3050 1950 0    60   ~ 0
VNEG
Text Label 3050 1550 0    60   ~ 0
LDO
Text Label 4600 2050 0    60   ~ 0
XSMT_f
Text Label 4250 5950 0    60   ~ 0
TIP_L
Text Label 2750 5950 0    60   ~ 0
TIP_R
Text Notes 750  1000 0    60   ~ 0
The decoupling capacitors should be near\nto the power pins, each have an independent\nvia to ground, and the trace should go from the supply\nvia the 10uF pad, then the 100nF pad, then to the\nsupply pin on the device.
Text Notes 3300 3100 0    60   ~ 0
The capacitor between the CAPM and CAPP\npins should be to the side of the chip, with\nthe traces passing under the chip
Text Notes 7150 5200 0    60   ~ 0
These capacitors are for a combination of stabilisation (the 10uF)\nand a large power supply well (the 100uF). The 100uF should be\ncloser to the DAC, with the 10uF by the LDOs
$Comp
L PWR_FLAG #FLG046
U 1 1 56CECC2E
P 10700 5600
F 0 "#FLG046" H 10700 5695 50  0001 C CNN
F 1 "PWR_FLAG" H 10700 5824 50  0000 C CNN
F 2 "" H 10700 5600 50  0000 C CNN
F 3 "" H 10700 5600 50  0000 C CNN
	1    10700 5600
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG047
U 1 1 56CEDCE8
P 9650 6100
F 0 "#FLG047" H 9650 6195 50  0001 C CNN
F 1 "PWR_FLAG" H 9650 6323 50  0000 C CNN
F 2 "" H 9650 6100 50  0000 C CNN
F 3 "" H 9650 6100 50  0000 C CNN
	1    9650 6100
	-1   0    0    1   
$EndComp
$Comp
L CP C49
U 1 1 56D3207E
P 10200 5850
F 0 "C49" H 10318 5896 50  0000 L CNN
F 1 "100uF" H 10318 5804 50  0000 L CNN
F 2 "Capacitors_ThroughHole:C_Radial_D7.5_L11.2_P2.5" H 10238 5700 50  0001 C CNN
F 3 "" H 10200 5850 50  0000 C CNN
	1    10200 5850
	1    0    0    -1  
$EndComp
Wire Wire Line
	10200 5700 10200 5600
Connection ~ 10200 5600
Wire Wire Line
	10200 6000 10200 6100
Connection ~ 10200 6100
$EndSCHEMATC