Texas Instruments TPA2008D2 manual Precautions, Supply Power

Page 14

Precautions

2.1 Precautions

Power Supply Input Polarity and Maximum Voltage

Always ensure that the polarity and voltage of the external power connected to VCC power input connector J1, J2, and/or VDD power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source.

Inserting or Removing EVM Boards

Do not insert or remove EVM boards with power applied—damage to the EVM board, the platform, or both may result.

Figure 2–1. Quick Start Platform Map

7b

1

13

7b

7b

7b

Power Input

J1 VCC In +

VCC(J1) DC SOURCE

(J2)

JP2 AC/DC

JP3 Batt

 

 

JP1

 

 

D4 J2 AC/DC In

D3

 

D2

D1

F1

VR1

C1+

Off Pwr

On

ICC

 

 

 

 

 

 

 

 

 

 

 

 

VR2

S1

JP4

 

 

 

 

 

 

 

SUPPLY

POWER

 

 

 

 

U6

F2

7a

 

 

DC

 

 

Power

B1

 

In/Out

 

+

 

J6 VDD In/Out

 

IDD

JP5

R2

 

 

 

 

 

 

 

 

 

 

9

Audio Input

J3 Right In

LED1 VCC

R1

 

 

Signal Conditioning

 

J4 Stereo In

 

U1

 

 

 

LED2 VDD

J7

 

Audio

Right Out

 

Power

 

 

 

 

Amps

 

J8 +

 

 

 

 

Off S2

U3

Right Out

10

 

 

U2

Speaker

 

 

 

Output

J5 Left In

****CAUTION****

Do not insert or remove

EVM boards with power

applied

Plug-N-Play Audio Amplifier

Evaluation Platform

SLOP097 Rev. C.1

TEXAS INSTRUMENTS 1997

On

Conditioning

TP1

GND

 

U4

U5

U5

 

Source

 

 

 

 

 

 

 

 

 

 

Left Out

 

 

JP6

Mode

+

 

 

Mute

 

U2-U4

JP7 HP(U5)

 

 

JP8

Spk(U2-U4)

 

 

 

 

Polarity

 

J9

 

 

Lo

 

 

 

 

 

 

Hi

 

 

Left Out

 

 

 

 

 

 

 

 

 

 

Stereo

 

+

 

C3

 

 

J10

S3 HP

 

C2

HP Out

 

R3

 

 

 

 

+

 

 

 

 

 

 

R4

 

 

 

 

R5

5

Headphone Output

3

2

64

2-2

Operation

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions Preface Information About Cautions and WarningsRelated Documentation From Texas Instruments Contents Figures TablesIntroduction Feature Highlights Description TPA2008D2 EVM Specifications To 5.5Operation EVM JP4 JP5 JP6 JP7 JP8Precautions Supply PowerQuick Start List for Platform Platform preparationsQuick Start List for Stand-Alone Evaluation Module PreparationsQuick Start for Stand-Alone Operation Power Requirements Operation Reference TPA2008D2 EVM Schematic TPA2008D2 Filter-Free Class-D EVM Schematic DiagramTPA2008D2 EVM Top Assembly TPA2008D2 EVM PCB LayersTPA2008D2 EVM Parts List TPA2008D2 EVM Parts ListDC Volume Table DC Volume ControlReference

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.