Operation, EVM JP4 JP5 JP6 JP7 JP8 | Texas Instruments TPA2008D2

Chapter 2

Operation

The steps in this chapter can be followed to quickly prepare the TPA2008D2 stereo filter-free class-D audio amplifier EVM for use. Using the TPA2008D2 with the TI plug-n-play audio amplifier evaluation platform is a quick and easy way to connect power, signal and control inputs, and signal outputs to the EVM using standard connectors. However, the audio amplifier evaluation module can be used stand-alone by making connections directly to the module pins, and can be wired directly into existing circuits or equipment.

The platform switch and jumper settings shown in Table 2–1 are typical for the TPA2008D2 EVM and causes the TPA2008D2 to shut down when a plug is in- serted into platform headphone jack J10.

Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA2008D2

EVM	JP4	JP5	JP6	JP7	JP8	S2	S3

P-N-P Platform	X	ON	Mute	X	Lo	Note 2	U5

Notes: 1) ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care

2)Set S2 to ON when signal conditioning board is installed in U1; set S2 to OFF when no signal conditioning board is installed.

Topic		Page

2.1	Precautions	. . 2–2
2.2	Quick Start List for Platform	. . 2–3
2.3	Quick Start List for Stand-Alone	. . 2–4
2.4	Power Requirements	. . 2–6

2-1

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.