Texas Instruments TPA0242 - Manual (Page 9)

Description
1-3 Introduction
1.2 Description
The TPA0242 stereo 2-W audio power amplifier evaluation module is a
complete, 2-watt per channel stereo audio power amplifier. It consists of the
TI TPA0242 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 (Figure 1–1).
Figure 1–1. The TI TPA0242 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
+
TPA00242 EVM Board
SLOP275
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 TPA0242 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 auto-
matically 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 TPA0242 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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .