Texas Instruments TPA0232, Руководство пользователя, Страница: 11 / 36

Description
1-3 Introduction
1.2 Description
The TPA0232 stereo 2-W audio power amplifier evaluation module is a
complete, 2-W per channel stereo audio power amplifier. It consists of the TI
TPA0232 stereo 2-W audio power amplifier IC along with a small number of
other parts mounted on a circuit board that measures approximately
2 1/4 inches by 1 1/2 inches (see Figure 1–1).
Figure 1–1. The TI TPA0232 Audio Amplifier Evaluation Module
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
C11
C2
C13
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C10
+
TPA00232 EVM Board
SLOP274
U1
+
TEXAS
INSTRUMENTS
R2
R1
PCBEEP
C1
C12
C6 C5 C4
R3
S2
C7 C8 C9
C3
SHUTDOWN
R4
S3 S4
HP/LINE
Single in-line header pins extend from the underside of the module circuit
board to allow the EVM to be plugged into the TI plug-n-play audio amplifier
evaluation platform, or to be wired directly into existing circuits and equipment
when used stand-alone.
The platform has room for a single TPA0232 evaluation module and is a
convenient vehicle for demonstrating TI’s audio power amplifier and related
evaluation modules. The EVMs simply plug into the platform, which
automatically provides power to the modules, interconnects them correctly,
and connects them to a versatile array of standard audio input and output jacks
and connectors. Easy-to-use configuration controls allow the platform and
EVMs to quickly model many possible end-equipment configurations.
There is nothing to build, nothing to solder, and nothing but the speakers
included with the platform to hook up.
1.3 TPA0232 EVM Specifications
Supply voltage range, V
DD
4.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, I
DD
2 A max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output power per channel, P
O
: 3-
Ω
BTL, V
DD
= 5 V 2 W . . . . . .
Audio input voltage, V
I,
: HP input 5 Vpp max . . . . . . . . . . . . . . . . . . . . . . . . . .
Line input 5 Vpp max . . . . . . . . . . . . . . . . . . . . . . . .
PC BEEP input 5 Vpp max . . . . . . . . . . . . . . . . . . . .
Minimum load impedance, R
L
3
Ω
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .