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DP
DM
5VIN
PUR
3VIN
SDA2
SCL2
IRQ2
USB-IRQ
SDA1
SCL1
1.8VIN
18pF/50V
C45
18pF/50V
C46
1000pF/50V
C48
3.09k
R22
4.99k
R20
4.99k
R21
JP5
2
1
4.99k
R15
2.00k
R23
100k
R16
S1
27.4
R13
27.4
R14
15k
R11
1.50k
R12
5.0V
GND
3.0V
1.8V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
JP4
1
2
3
GND
GND
JP2
1
2
3
3
2
1
JP3
GND
GND
GND
GND
GND
GND
GND
330
R17
330
R18
GND
GND
JP6
1
2
GND
GND
6.0MHz
1
2
Y1
GND
U5
TAS1020BPFB
47
46
3
48
1
2
45
44
43
5
6
7
9
10
11
12
41
42
33
16
28
4
8
21
40
39
38
37
36
35
34
32
23
24
25
26
27
29
30
31
13
14
15
17
18
19
20
22
64K
U4
1
2
3
4
5
6
7
8
3.3V/400mA
VR3
TPS73633MDBVREP
5
4
3
2
1
3.0V/400mA
VR1
1
2
3
4
5
TPS73630MDBVREP
1.8V/400mA
VR2
TPS73618MDBVREP
5
4
3
2
1
U3
SN74AVC1T45DBV
6
5
4
3
2
1
A
GND
DIR
VCCA
VCCB
B
U2
PCA9306DCT
1
2
3
4
5
6
7
8
GND
GND
GND
220k
R19
0.1uF/16V
C26
10.0uF/10V
C25
10.0uF/10V
C27
+
10.0uF/10V
C30
10.0uF/10V
C34
0.1uF/16V
C35
0.1uF/16V
C31
10.0uF/10V
C32
+
10.0uF/10V
C36
+
1.0uF/25V
C33
1.0uF/25V
C37
1.0uF/25V
C28
100pF/50V
C47
0.1uF/16V
C38
0.1uF/16V
C49
0.1uF/16V
C50
0.1uF/16V
C51
0.1uF/16V
C52
0.1uF/16V
C53
0.1uF/16V
C54
0.1uF/16V
C43
0.1uF/16V
C44
0.1uF/16V
C41
0.1uF/16V
C42
47pF/50V
C39
47pF/50V
C40
10uF/6.3V
C29
40V,1A
Q1
B
E
C
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+5V-USB
+5V-USB
+3.3V
+3.3V
+3.0V
+1.8V
+5V
+5V
+5V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+5V
+3.3V
+3.3V
+3.3V
+1.8V-PS
+1.8V-PS
+1.8V-PS
1
2
3
4
5
USB
Data+
GND
ID_NC
5v
Data-
600 Ohms/2A
FB6
1
2
600 Ohms/2A
FB5
1
2
+3.3V
POWER
SUPPLY
INPUTS
FROM
U1
USB
USB
RESET
U
S
B
-I
R
Q
Schematic
Figure 2. TPA6166A2EVM Schematic
4
TPA6166A2 Multimedia Headset Interface
SLOU381 – March 2014
Copyright © 2014, Texas Instruments Incorporated