Quick Start List for Stand-Alone

Figure 2–3. Quick Start for Stand-Alone

4

Audio

Input

(Right)

6

7

 

5

Right

 

External Shut

 

Down Control

 

(active low)

Audio

Input (Left)

4

 

8

5

Left

5 V 2

 

-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 RIN– (LIN–) pins.

5)Connect speakers to the left and right outputs.

-Evaluation module preparations

6)Use potentiometer R3 to set the volume. Turning R3 in the clockwise direction will increase the volume. See Table 3–1 for voltage levels on the VOLUME pin and corresponding gain settings.

7)If using an external DAC, adjust R3 to the center position by placing a

DMM across the VOLUME pin and ground and adjusting the potentiometer until 25 kis measured across the leads. Apply the external source to the VOLUME pin.

-Control inputs

8)SHUTDOWN: A low shuts down the amplifier IC on the module; a high or float allows normal operation.

-Power up

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

Operation 2-5

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Texas Instruments TPA2008D2 manual Quick Start for Stand-Alone

TPA2008D2 specifications

The Texas Instruments TPA2008D2 is a highly efficient, integrated audio amplifier designed to meet the demands of a variety of audio applications. This device is particularly well-suited for portable electronic devices, such as smartphones, tablets, and portable speakers, where space and power efficiency are critical considerations.

One of the standout features of the TPA2008D2 is its Class-D architecture, which allows for greater efficiency compared to traditional Class-AB amplifiers. With a maximum output power of up to 3.2 W per channel when operating from a 5 V power supply, it delivers high-quality audio performance while minimizing heat generation. This efficiency is crucial for battery-operated devices, as it prolongs battery life while providing ample power for driving speakers.

The TPA2008D2 also boasts a low quiescent current, which further enhances its power efficiency. The device operates with a wide supply voltage range, from 2.5 V to 5.5 V, making it highly versatile for various applications. Its small size and low profile package make it easy to integrate into compact designs, allowing manufacturers to create sleek products without compromising on audio quality.

In addition to its impressive power efficiency, the TPA2008D2 features built-in protections, including over-temperature protection and short-circuit protection. These safety features provide reliability and longevity, ensuring that the device can withstand varying operating conditions without failure.

Another notable technology employed in the TPA2008D2 is its advanced feedback mechanism, which ensures optimal performance across various loads and helps maintain audio clarity and fidelity. The amplifier supports a variety of input types, providing flexibility for design engineers when integrating it into different systems.

The design of the TPA2008D2 includes differential inputs, which help to eliminate noise and improve the overall sound quality. The inclusion of a gain setting allows users to customize the amplifier to suit specific application requirements, making it an adaptable solution for designers.

In summary, the Texas Instruments TPA2008D2 is a feature-rich audio amplifier that combines power efficiency, compact size, and reliability, making it a perfect choice for portable audio applications. With its Class-D design, advanced protection features, and flexibility in input and gain options, it continues to be a favored solution among audio designers seeking high performance in a small package.