Quick Start List for Stand-Alone | Texas Instruments TPA0243

2.3 Quick Start List for Stand-Alone

Follow these steps to use the TPA0243 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA0243 module header pins can be made via individual sockets, wire-wrapping, or soldering to the pins, either on the top or the bottom of the module circuit board. Numbered callouts for selected steps appear in Figure 2±2.

Figure 2±2. Module Map

GND

RIN

VDD GND

TEXAS INSTRUMENTS 2000

R3 C8

RO/MO+

GND

LO/MO+

STEREO/MONO

R5 S1

	R1	R9
LIN C2	R1	C4
GND		C5
GND
	SHUTDOWN C3
TPA0243 EVM Board		VDD GND
TPA0243 EVM Board

R6 SHUTDOWN

J1 GND

SLOP269

-Power supply

1)Ensure that all external power sources are set to OFF.

2)Connect an external regulated power supply set to 5 V to the module VDD and GND pins taking care to observe marked polarity.

-Inputs and outputs

3)Ensure that audio signal source level adjustments are set to minimum.

4)Connect the right (left) positive lead of the audio source to the module RIN (LIN) pins and the negative lead to the GND pin.

5)Connect a speaker to the module RO/MO+ and LO/MO± pins OR plug a headphone into to EVM headphone jack J1.

-Evaluation module preparations

6)Adjust EVM potentiometers R2 and R4 to approximately mid point.

-Power-up

7)Verify correct voltage and input polarity and set the external power supply to ON.

The EVM should begin operation.

8)Adjust the signal source level or adjust potentiometers R2 and R4 on the EVM as needed.

2-4

TPA0243 specifications

The Texas Instruments TPA0243 is an advanced class-D audio amplifier that is recognized for its high-performance capabilities and compact design. Specifically designed for portable applications, the TPA0243 delivers impressive sound quality while maximizing energy efficiency. Its compact footprint makes it suitable for a variety of consumer electronics, including mobile devices, tablets, and laptops.

One of the standout features of the TPA0243 is its ability to output up to 3.2 watts of continuous power per channel into a 4-ohm load. This level of power is sufficient for driving small speakers or external audio systems, making it an ideal choice for portable speaker designs. The amplifier also supports operation with a supply voltage range of 2.5V to 5.5V, further enhancing its versatility in different applications.

The TPA0243 utilizes sophisticated technologies to ensure high fidelity audio performance. It includes integrated thermal overload protection and short-circuit protection, which safeguards the device from damage under adverse conditions. Furthermore, the low standby current draw of 2 µA contributes to longer battery life in portable applications, making it energy-efficient.

In addition to its robust performance, the amplifier features low total harmonic distortion (THD) and a signal-to-noise ratio (SNR) of up to 90 dB, ensuring clear audio reproduction. The TPA0243 has a high power supply rejection ratio (PSRR), which helps minimize the impact of power supply variations on audio performance.

The amplifier also supports a variety of output configurations, including stereo and mono options, offering design flexibility for engineers. Its built-in gain setting allows for easy integration into diverse applications, ensuring that it can meet the demands of various output requirements.

Overall, the Texas Instruments TPA0243 stands out as a reliable and versatile audio amplifier, combining compactness with robust performance features. With its integration of advanced technologies, efficient power consumption, and superior sound quality, it is an optimal choice for designers looking to enhance the audio experience in portable electronic devices.