SCL
IRQ2
SDA1
SCL1
SDA
IRQ
33pF/50V
C12
33pF/50V
C13
33pF/50V
C14
33pF/50V
C15
33pF/50V
C16
33pF/50V
C17
33pF/50V
C18
33pF/50V
C19
0.47uF/16V
C1
0.47uF/16V
C2
100k
R5
JP1
1
2
3
IRQ
0.0
R10
RING1
TIP
JACK-SENSE
RING2
SLEEVE
1.0k
R1
1.0k
R2
J1
5
3
1
4
2
S
h
ie
ld
RIGHT
LEFT
3
2
1
SDA
3
2
1
SCL
2.7k
R4
2.7k
R3
4700pF/50V
C3
1.0uF/10V
C6
1.0uF/10V
C8
1.0uF/10V
C9
0.0
R8
2.2uF/10V
C5
2
3
HPINL
S
h
ie
ld
1
2
3
HPINR
S
h
ie
ld
1
0.0
R7
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+1.8V
+1.8V
+1.8V
+3.0V
GND
GND
GND
10pF/50V
C23
10pF/50V
C21
10pF/50V
C4
10pF/50V
C11
10pF/50V
C24
GND
10pF/50V
C22
GND
10pF/50V
C10
GND
10pF/50V
C20
+1.8V
1.0ufd/10V
C7
3
2
MICOUT
S
h
ie
ld
1
GND
0.0
R6
120ohms/1.2A
FB1
1
2
120ohms/1.2A
FB2
1
2
120ohms/1.2A
FB3
1
2
120ohms/1.2A
FB4
1
2
M3x5
M3x12
GND
U1
TPA6166A2YFF
A1
C3
D3
E2
B2
C1
A3
C4
A2
B4
E5
D1
D2
E1
D4
B1
B3
C2
B5
C5
A5
E4
A4
E3
D5
R9
0.0
M3x12 M3x12 M3x12
GND
GND
GND
M3x5 M3x5 M3x5
DNP
DNP
DNP
DNP
DNP
DNP
DNP
DNP
DNP
SCREWS
STANDOFFS
TO U3
HEADPHONE
INPUTS
TO U2
MIC OUTPUT
MOUNTING HARDWARE
Schematic
6
Schematic
and
illustrate the EVM schematics.
Figure 1. TPA6166A2EVM Schematic
3
SLOU381 – March 2014
TPA6166A2 Multimedia Headset Interface
Copyright © 2014, Texas Instruments Incorporated