Datasheet

Quick Start List for Platform
2-4
Operation
 Evaluation module preparations
Figure 2–2. Module Preparation
11
12
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
J1 UP
C3
VDD GND
L IN+
GND
L LINE–
L HP
VDD
GND
R HP
R LINE–
GND
R IN+
C12
+
TPA0252 EVM
SLOP333
U1
TEXAS
INSTRUMENTS
R4
R1
D1
SHUTDOWN
C6
S2
S3
DOWN
UP
R2
C13
C8
C7
C9
C10
C11
R5
TP1
HP/LINE
HP–SE
J5
D2
VAUX
TP2
C2
C5
C4
C1
R3
J2 DOWN
J3 CLK
J4
PCBEEP
Table 2–2. Typical TPA0252 EVM Jumper Settings
EVM J1 J2 J3 J4 J5
TPA0252 ON ON ON ON ON
Note: ON = Shunt installed, OFF = Open
11) To use the PCBEEP input, set J4 to OFF and drive a 1-Vp–p, 1-kHz
squarewave into the capacitor side of the jumper. If the PCBEEP input is
not being used, set jumper J4 to ON.
12) To allow the EVM amplifier IC to switch from the line inputs to the HP inputs
when the output mode switches from BTL to SE (and vice versa), set
jumper J5 to ON. To allow the input and output modes to switch
independently, set jumper J5 to OFF.
13) When the module powers up or comes out of shutdown, the volume is set
at the –85 dB level. Press the UP pushbutton (S2), until the desired volume
level is reached.
 Power up
14) Verify the correct voltage and input polarity and set the external power
supply to ON. If V
CC
and an on-board regulator EVM are used to provide
V
DD
, set the platform power switch S1 to ON.
Platform LED2 should light indicating the presence of V
DD
, and the evaluation
modules installed on the platform should begin operation.
15) Adjust the signal source level as needed.