1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2019/ 1 2 / 3 0 Sheet of
File: E:\Work\..\ESP32-Au d i o _ V 1 .5.SchD oc Drawn By:
P18
P19
P2
VCC_3V3
P1
GND
P7
P11
P12
P13
MIC1N
MIC1P
MIC2P
MIC2N
P14
P15
MBIAS
SPKR+
SPKR-
SPKL+
SPKL-
P8
P9
P10
LINEINR
LINEINL
P16
P17
U_ESP32 -Au d i o _ V 1 .3
ESP32-Audi o _ V 1 .3_A udi o.SchD oc
U_ESP32-Audio_ V 1 .3
ESP32-Audi o _ V 1 .3_WiFi.SchDoc
P3
P4
P5
P6
EN
U0RXD
U0TXD
IO0
P26
P27
P22
P23
P24
P25
IO14
IO13
IO15
IO2
P28
P29
P30
P31
P32
P33
P34
P35
P36
IO4
IO5
IO18
IO23
IO19
IO22
IO21SPORN
SPORP
SPOLN
SPOLP
D1
PESD5V0S1BB
P20
P21
HPOUTL
HPOUTR
P37
P38
GND
IO12
HBIAS
I2S_MCLK
IO34
GND
GND
SENSOR_VP
SENSOR_VN
PID101
PID102
COD1
PIP101
COP1
PIP201
COP2
PIP301
COP3
PIP401
COP4
PIP501
COP5
PIP601
COP6
PIP701
COP7
PIP801
COP8
PIP901
COP9
PIP1001
COP10
PIP1101
COP11
PIP1201
COP12
PIP1301
COP13
PIP1401
COP14
PIP1501
COP15
PIP1601
COP16
PIP1701
COP17
PIP1801
COP18
PIP1901
COP19
PIP2001
COP20
PIP2101
COP21
PIP2201
COP22
PIP2301
COP23
PIP2401
COP24
PIP2501
COP25
PIP2601
COP26
PIP2701
COP27
PIP2801
COP28
PIP2901
COP29
PIP3001
COP30
PIP3101
COP31
PIP3201
COP32
PIP3301
COP33
PIP3401
COP34
PIP3501
COP35
PIP3601
COP36
PIP3701
COP37
PIP3801
COP38
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2019/ 1 2 / 3 0 Sheet of
File: E:\Work\..\ESP32-Au d i o _ V 1 .5_A udi o.SchD ocDrawn By:
MIC1N
1
HBIAS
2
LINEINR
3
LINEINL
4
VRP
5
VRN
6
AGND
7
AVCC
8
SPORP
9
SPORN
10
SPOLP
11
SPOLN
12
VRA2
13
VRA1
14
VPP
15
VEE
16
HPOUTL
17
HPOUTFB
18
HPOUTR
19
CPVEE
20
CPN
21
CPVDD
22
CPP
23
IRQ
24
VCC_IO1
25
SDIN1
26
SDOUT1
27
LRCK1
28
BCLK1
29
MCLK1
30
SDA
31
SCK
32
VCC_IO0
33
BYPASS
34
VDD_CORE
35
LDOIN
36
MIC2P
37
MBIAS
38
MIC2N
39
MIC1P
40
GND
41
U5
AC101
INP
A1
GND
A2
VON
A3
AVDD
B1
PVDD
B2
GND
B3
INN
C1
SHUTDOWN
C2
VOP
C3
U6
AW 8 0 10A
C37
100nF
C38
100nF
R18
51K
R19
51K
ShutDown
L4
Inductor1
L5
Inductor1
C43
1nF
C44
1nF
SPKR+
SPKR-
MIC1N
MIC1P
MIC2P
MIC2N
LINEINR
LINEINL
I2S_MCLK
I2S_BCLK
I2S_LRCK
I2S_SDIN
I2S_SDOUT
HPOUTL
HPOUTR
SPORP
SPORN
SPOLN
SPOLP
C20 1uF
C21 1uF
C36
2.2uF
SDA
SCL
C19 10uF
C27
1uF
C26
100nF
C24
4.7uF
R8
220K
C33
100nF
C32
100nF
R11
22R
R12
22R
C34
2.2uF
C30
2.2uF
C31
2.2uF
VCC_3V3
INP
A1
GND
A2
VON
A3
AVDD
B1
PVDD
B2
GND
B3
INN
C1
SHUTDOWN
C2
VOP
C3
U7
AW 8 0 10A
L6
Inductor1
L7
Inductor1
C45
1nF
C46
1nF
SPKL+
SPKL-
C39
100nF
C40
100nF
R20
51K
R21
51K
SPORP
SPORN
SPOLN
SPOLP
C42 10uF
C41 10uF
L3
Inductor1
L2
Inductor1
VCC_5V0
VCC_5V0
VCC_1V8
VCC_1V8
R10 10K
R9 10K
HBIAS
MBIAS
R23 0R/NC
R24 0R/NC
R25 0R/NC
R26 0R/NCSPKR+
SPKR-SPORP
SPORN
SPOLN
SPOLP SPKL+
SPKL-
C25
2.2uF
C35
2.2uF
VCC_1V8VCC_3V3
VCC_3V3
VCC_3V3
LINEIN_R
LINEIN_L
C23
100nF
C22
10uF
R7
0R
R22
100K
VCC_5V0
R17
10K
SHDN
SHDN
OUT
1
GND
2
EN
3
IN
4
U4
SGM2031
C28
100nF
GND
GND
C29
2.2uF
VCC_3V3
VCC_3V3
PIC1901
PIC1902
COC19
PIC2001
PIC2002
COC20
PIC2101
PIC2102
COC21
PIC2201
PIC2202
COC22
PIC2301
PIC2302
COC23
PIC2401
PIC2402
COC24
PIC2501
PIC2502
COC25
PIC2601
PIC2602
COC26
PIC2701
PIC2702
COC27
PIC2801
PIC2802
COC28
PIC2901
PIC2902
COC29
PIC3001
PIC3002
COC30
PIC3101
PIC3102
COC31
PIC3201
PIC3202
COC32
PIC3301
PIC3302
COC33
PIC3401
PIC3402
COC34
PIC3501
PIC3502
COC35
PIC3601
PIC3602
COC36
PIR701
PIR702
COR7
PIR801
PIR802
COR8
PIR901
PIR902
COR9
PIR1001
PIR1002
COR10
PIR1101
PIR1102
COR11
PIR1201
PIR1202
COR12
PIU401
PIU402
PIU403
PIU404
COU4
PIU501
PIU502
PIU503
PIU504
PIU505
PIU506
PIU507
PIU508
PIU509
PIU5010
PIU5011
PIU5012
PIU5013
PIU5014
PIU5015
PIU5016
PIU5017
PIU5018
PIU5019
PIU5020
PIU5021
PIU5022
PIU5023
PIU5024
PIU5025
PIU5026
PIU5027
PIU5028
PIU5029
PIU5030
PIU5031
PIU5032
PIU5033
PIU5034
PIU5035
PIU5036
PIU5037
PIU5038
PIU5039
PIU5040
PIU5041
COU5