Texas Instruments TPA0242, User Manual

Page: 18 / 34

Precautions
3-2 Details
3.1 Precautions
Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power
connected to V
CC
power input connector J1, J2, and/or V
DD
power
input connector J6 are correct. Overvoltage or reverse-polarity
power applied to these terminals can open onboard soldered-in
fuses and cause other damage to the platform, installed evaluation
modules, and/or the power source.
Inserting or Removing EVM Boards
Do not insert or remove EVM boards with power applied—damage
to the EVM board, the platform, or both may result.
Figure 3–1. The TI Plug-N-Play Audio Amplifier Evaluation Platform
Signal Conditioning
****CAUTION****
Do not insert or remove
EVM boards with power
applied
ICC
JP4
F1
VR1
R1
JP3
JP2 JP1
AC/DC (J2)
VCC(J1)
D1 D2 D3
D4
J2
J3
J4
J5
AC/DC
In
VCC
In
+
J1
DC
SOURCE
LED1 VCC
LED2 VDD
R2
JP5 IDD
B1
U6
POWER
SUPPL
Y
U3
U4
U5
U1
U2
Audio
Power
Amps
On
Of
f
Conditioning
S2
J7
J8
Right
Out
Left Out
+–
+
–
JP6
Mode
Mute
Spk(U2-U4)
JP8
J9
Left Out
JP7
S3 HP Source
U2-U4
U5
Polarity
Lo
Hi
HP(U5)
C3
C2
+
+
R3
R5
J10
Stereo
HP Out
TP1
GND
Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
Stereo
In
Right
In
Left
In
J6
In/Out VDD
F2
VR2
+
DC
Power
In/Out
Speaker
Output
Headphone
Output
Audio
Input
Power
Input
Batt
C1+
Right
Out
On Of
f
Pwr
S1
TEXAS INSTRUMENTS 1997
R4