EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 7 10
Title "Audio interface"
Date "2021-03-29"
Rev "A"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Device:Ferrite_Bead_Small FB1
U 1 1 6078F8D5
P 3600 2550
F 0 "FB1" V 3550 2450 50  0000 C CNN
F 1 "FB???" V 3550 2750 50  0000 C CNN
F 2 "" V 3530 2550 50  0001 C CNN
F 3 "~" H 3600 2550 50  0001 C CNN
	1    3600 2550
	0    1    1    0   
$EndComp
$Comp
L Device:Ferrite_Bead_Small FB2
U 1 1 60790899
P 3600 2750
F 0 "FB2" V 3550 2650 50  0000 C CNN
F 1 "FB???" V 3550 2950 50  0000 C CNN
F 2 "" V 3530 2750 50  0001 C CNN
F 3 "~" H 3600 2750 50  0001 C CNN
	1    3600 2750
	0    1    1    0   
$EndComp
$Comp
L Device:Ferrite_Bead_Small FB3
U 1 1 60790B90
P 3600 2950
F 0 "FB3" V 3550 2850 50  0000 C CNN
F 1 "FB???" V 3550 3150 50  0000 C CNN
F 2 "" V 3530 2950 50  0001 C CNN
F 3 "~" H 3600 2950 50  0001 C CNN
	1    3600 2950
	0    1    1    0   
$EndComp
$Comp
L Device:Ferrite_Bead_Small FB4
U 1 1 60791B9F
P 3600 3150
F 0 "FB4" V 3550 3050 50  0000 C CNN
F 1 "FB???" V 3550 3350 50  0000 C CNN
F 2 "" V 3530 3150 50  0001 C CNN
F 3 "~" H 3600 3150 50  0001 C CNN
	1    3600 3150
	0    1    1    0   
$EndComp
Text GLabel 3300 2550 0    50   Input ~ 0
MIC_P
Text GLabel 3300 2750 0    50   Input ~ 0
MIC_N
Text GLabel 3300 2950 0    50   Output ~ 0
SPK_P
Text GLabel 3300 3150 0    50   Output ~ 0
SPK_N
Wire Wire Line
	3700 2550 4200 2550
Wire Wire Line
	3500 2550 3300 2550
Wire Wire Line
	3300 2750 3500 2750
Wire Wire Line
	3500 2950 3300 2950
Wire Wire Line
	3300 3150 3500 3150
Wire Wire Line
	3700 2750 4000 2750
Wire Wire Line
	7200 2950 6550 2950
Wire Wire Line
	3700 3150 4200 3150
$Comp
L Device:C C75
U 1 1 60795A58
P 4200 2300
F 0 "C75" H 4315 2346 50  0000 L CNN
F 1 "10p" H 4315 2255 50  0000 L CNN
F 2 "" H 4238 2150 50  0001 C CNN
F 3 "~" H 4200 2300 50  0001 C CNN
	1    4200 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C77
U 1 1 60796BD2
P 4550 2300
F 0 "C77" H 4665 2346 50  0000 L CNN
F 1 "33p" H 4665 2255 50  0000 L CNN
F 2 "" H 4588 2150 50  0001 C CNN
F 3 "~" H 4550 2300 50  0001 C CNN
	1    4550 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	4550 2150 4550 2050
Wire Wire Line
	4550 2050 4200 2050
Wire Wire Line
	4200 2050 4200 2150
Wire Wire Line
	4200 2050 4000 2050
Wire Wire Line
	4000 2050 4000 2750
Connection ~ 4200 2050
Connection ~ 4000 2750
Wire Wire Line
	4000 2750 5800 2750
Wire Wire Line
	4200 2450 4200 2550
Connection ~ 4200 2550
Wire Wire Line
	4200 2550 4550 2550
Wire Wire Line
	4550 2450 4550 2550
Connection ~ 4550 2550
Wire Wire Line
	4550 2550 5100 2550
$Comp
L Device:C C76
U 1 1 60797B9D
P 4200 3400
F 0 "C76" H 4315 3446 50  0000 L CNN
F 1 "10p" H 4315 3355 50  0000 L CNN
F 2 "" H 4238 3250 50  0001 C CNN
F 3 "~" H 4200 3400 50  0001 C CNN
	1    4200 3400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C78
U 1 1 6079813D
P 4550 3400
F 0 "C78" H 4665 3446 50  0000 L CNN
F 1 "33p" H 4665 3355 50  0000 L CNN
F 2 "" H 4588 3250 50  0001 C CNN
F 3 "~" H 4550 3400 50  0001 C CNN
	1    4550 3400
	1    0    0    -1  
$EndComp
Wire Wire Line
	4550 3250 4550 3150
Connection ~ 4550 3150
Wire Wire Line
	4550 3150 5100 3150
Wire Wire Line
	4200 3250 4200 3150
Connection ~ 4200 3150
Wire Wire Line
	4200 3150 4550 3150
Wire Wire Line
	4550 3550 4550 3650
Wire Wire Line
	4550 3650 4200 3650
Wire Wire Line
	4200 3650 4200 3550
Wire Wire Line
	4000 2950 4000 3650
Wire Wire Line
	4000 3650 4200 3650
Connection ~ 4000 2950
Wire Wire Line
	4000 2950 3700 2950
Connection ~ 4200 3650
$Comp
L Device:C C81
U 1 1 60799F1B
P 5450 2300
F 0 "C81" H 5565 2346 50  0000 L CNN
F 1 "33p" H 5565 2255 50  0000 L CNN
F 2 "" H 5488 2150 50  0001 C CNN
F 3 "~" H 5450 2300 50  0001 C CNN
	1    5450 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C79
U 1 1 6079B0E0
P 5100 2300
F 0 "C79" H 5215 2346 50  0000 L CNN
F 1 "10p" H 5215 2255 50  0000 L CNN
F 2 "" H 5138 2150 50  0001 C CNN
F 3 "~" H 5100 2300 50  0001 C CNN
	1    5100 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C83
U 1 1 607A0210
P 5800 2300
F 0 "C83" H 5915 2346 50  0000 L CNN
F 1 "10p" H 5915 2255 50  0000 L CNN
F 2 "" H 5838 2150 50  0001 C CNN
F 3 "~" H 5800 2300 50  0001 C CNN
	1    5800 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C85
U 1 1 607A06F7
P 6150 2300
F 0 "C85" H 6265 2346 50  0000 L CNN
F 1 "33p" H 6265 2255 50  0000 L CNN
F 2 "" H 6188 2150 50  0001 C CNN
F 3 "~" H 6150 2300 50  0001 C CNN
	1    6150 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C80
U 1 1 607A1576
P 5100 3400
F 0 "C80" H 5215 3446 50  0000 L CNN
F 1 "10p" H 5215 3355 50  0000 L CNN
F 2 "" H 5138 3250 50  0001 C CNN
F 3 "~" H 5100 3400 50  0001 C CNN
	1    5100 3400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C82
U 1 1 607A1B19
P 5450 3400
F 0 "C82" H 5565 3446 50  0000 L CNN
F 1 "33p" H 5565 3355 50  0000 L CNN
F 2 "" H 5488 3250 50  0001 C CNN
F 3 "~" H 5450 3400 50  0001 C CNN
	1    5450 3400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C84
U 1 1 607A2171
P 5800 3400
F 0 "C84" H 5915 3446 50  0000 L CNN
F 1 "10p" H 5915 3355 50  0000 L CNN
F 2 "" H 5838 3250 50  0001 C CNN
F 3 "~" H 5800 3400 50  0001 C CNN
	1    5800 3400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C86
U 1 1 607A26E1
P 6150 3400
F 0 "C86" H 6265 3446 50  0000 L CNN
F 1 "33p" H 6265 3355 50  0000 L CNN
F 2 "" H 6188 3250 50  0001 C CNN
F 3 "~" H 6150 3400 50  0001 C CNN
	1    6150 3400
	1    0    0    -1  
$EndComp
Wire Wire Line
	5100 2450 5100 2550
Connection ~ 5100 2550
Wire Wire Line
	5100 2550 5450 2550
Wire Wire Line
	5450 2450 5450 2550
Connection ~ 5450 2550
Wire Wire Line
	5450 2550 6550 2550
Wire Wire Line
	5800 2450 5800 2750
Connection ~ 5800 2750
Wire Wire Line
	5800 2750 6150 2750
Wire Wire Line
	6150 2450 6150 2750
Connection ~ 6150 2750
Wire Wire Line
	6150 2750 6950 2750
Wire Wire Line
	6150 2150 6150 2050
Wire Wire Line
	6150 2050 5800 2050
Wire Wire Line
	5100 2050 5100 2150
Wire Wire Line
	5450 2150 5450 2050
Connection ~ 5450 2050
Wire Wire Line
	5450 2050 5100 2050
Wire Wire Line
	5800 2150 5800 2050
Connection ~ 5800 2050
Wire Wire Line
	5800 2050 5450 2050
$Comp
L power:GNDA #PWR0112
U 1 1 607A660C
P 5450 1950
F 0 "#PWR0112" H 5450 1700 50  0001 C CNN
F 1 "GNDA" H 5455 1777 50  0000 C CNN
F 2 "" H 5450 1950 50  0001 C CNN
F 3 "" H 5450 1950 50  0001 C CNN
	1    5450 1950
	-1   0    0    1   
$EndComp
Wire Wire Line
	5450 1950 5450 2050
Wire Wire Line
	5100 3250 5100 3150
Connection ~ 5100 3150
Wire Wire Line
	5100 3150 5450 3150
Wire Wire Line
	5450 3250 5450 3150
Connection ~ 5450 3150
Wire Wire Line
	5450 3150 6950 3150
Wire Wire Line
	5800 3250 5800 2950
Connection ~ 5800 2950
Wire Wire Line
	5800 2950 4000 2950
Wire Wire Line
	6150 3250 6150 2950
Connection ~ 6150 2950
Wire Wire Line
	6150 2950 5800 2950
Wire Wire Line
	6150 3550 6150 3650
Wire Wire Line
	5100 3650 5100 3550
Wire Wire Line
	5450 3550 5450 3650
Connection ~ 5450 3650
Wire Wire Line
	5450 3650 5100 3650
Wire Wire Line
	6150 3650 5800 3650
Wire Wire Line
	5800 3550 5800 3650
Connection ~ 5800 3650
Wire Wire Line
	5800 3650 5450 3650
$Comp
L power:GNDA #PWR0113
U 1 1 607ADE34
P 5450 3750
F 0 "#PWR0113" H 5450 3500 50  0001 C CNN
F 1 "GNDA" H 5455 3577 50  0000 C CNN
F 2 "" H 5450 3750 50  0001 C CNN
F 3 "" H 5450 3750 50  0001 C CNN
	1    5450 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	5450 3650 5450 3750
$Comp
L Diode:ESD9B5.0ST5G D16
U 1 1 607B9034
P 6550 3400
F 0 "D16" V 6504 3479 50  0000 L CNN
F 1 "PESD5V0S1BL" V 6900 3150 50  0000 L CNN
F 2 "Diode_SMD:D_SOD-923" H 6550 3400 50  0001 C CNN
F 3 "https://www.onsemi.com/pub/Collateral/ESD9B-D.PDF" H 6550 3400 50  0001 C CNN
	1    6550 3400
	0    1    1    0   
$EndComp
$Comp
L Diode:ESD9B5.0ST5G D18
U 1 1 607BA2DE
P 6950 3400
F 0 "D18" V 6904 3479 50  0000 L CNN
F 1 "PESD5V0S1BL" V 6995 3479 50  0000 L CNN
F 2 "Diode_SMD:D_SOD-923" H 6950 3400 50  0001 C CNN
F 3 "https://www.onsemi.com/pub/Collateral/ESD9B-D.PDF" H 6950 3400 50  0001 C CNN
	1    6950 3400
	0    1    1    0   
$EndComp
$Comp
L Diode:1.5KExxA D15
U 1 1 607BB5BC
P 6550 2300
F 0 "D15" V 6596 2220 50  0000 R CNN
F 1 "ESD9X5.OST5G" V 6850 2450 50  0000 R CNN
F 2 "Diode_THT:D_DO-201AE_P15.24mm_Horizontal" H 6550 2100 50  0001 C CNN
F 3 "https://www.vishay.com/docs/88301/15ke.pdf" H 6500 2300 50  0001 C CNN
	1    6550 2300
	0    -1   -1   0   
$EndComp
$Comp
L Diode:1.5KExxA D17
U 1 1 607BC1D9
P 6950 2300
F 0 "D17" V 6996 2220 50  0000 R CNN
F 1 "ESD9X5.OST5G" V 6905 2220 50  0000 R CNN
F 2 "Diode_THT:D_DO-201AE_P15.24mm_Horizontal" H 6950 2100 50  0001 C CNN
F 3 "https://www.vishay.com/docs/88301/15ke.pdf" H 6900 2300 50  0001 C CNN
	1    6950 2300
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6150 2050 6550 2050
Wire Wire Line
	6550 2050 6550 2150
Connection ~ 6150 2050
Wire Wire Line
	6550 2050 6950 2050
Wire Wire Line
	6950 2050 6950 2150
Connection ~ 6550 2050
Wire Wire Line
	6550 2450 6550 2550
Connection ~ 6550 2550
Wire Wire Line
	6550 2550 7200 2550
Wire Wire Line
	6950 2450 6950 2750
Connection ~ 6950 2750
Wire Wire Line
	6950 2750 7200 2750
Wire Wire Line
	6550 3250 6550 2950
Connection ~ 6550 2950
Wire Wire Line
	6550 2950 6150 2950
Wire Wire Line
	6550 3550 6550 3650
Wire Wire Line
	6550 3650 6150 3650
Connection ~ 6150 3650
Wire Wire Line
	6950 3250 6950 3150
Connection ~ 6950 3150
Wire Wire Line
	6950 3150 7200 3150
Wire Wire Line
	6950 3550 6950 3650
Wire Wire Line
	6950 3650 6550 3650
Connection ~ 6550 3650
Text GLabel 7200 2550 2    50   Output ~ 0
MIC_P_INT
Text GLabel 7200 2750 2    50   Output ~ 0
MIC_N_INT
Text GLabel 7200 2950 2    50   Input ~ 0
SPK_P_INT
Text GLabel 7200 3150 2    50   Input ~ 0
SPK_N_INT
Text Notes 950  6600 0    60   ~ 0
Notes:\n1. The analog output only drives earphone and headset. For larger power loads such as speakers, an audio power amplifier should be added in the design.\n2. In handset application, route the MIC and SPK signal traces as differential pairs respectively.\n3. In earphone application, route the MIC signal traces as differential pairs.\n4. All MIC and SPK signal traces should be routed with total grounding and far away from noise such as clock and DC-DC signals, etc.\n5. ALC5616 and TLV320AIC3104 cannot be used simultaneously in audio codec
Text Notes 4000 1550 0    60   ~ 0
Headset
$EndSCHEMATC