The TPA0202 Audio Power Amplifier Evaluation Module

3.2 The TPA0202 Audio Power Amplifier Evaluation Module

The TPA0202 Audio Power Amplifier Evaluation Module is powered by a TPA0202 stereo power amplifier capable of delivering greater than 2 W of continuous power per channel into 3-Ωloads. The amplifier IC can be operated in either the BTL or single-ended output mode. The evaluation module includes control inputs for muting and shutdown, selection between two sets of stereo inputs, and switching between single ended and bridge-tied load output modes.

The module can be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform (Figure 3±1) or wired directly into circuits or equipment. The module has single in-line header connector pins mounted to the under side of the board. These pins allow the module to be plugged into the TI platform, which automatically makes all the signal input and output, power, and control connections to the module.

The module connection pins are on 0.1-inch centers to allow easy use with standard perf board and plug board-based prototyping systems. Or, the EVM can be wired directly into existing circuits and equipment when used stand- alone.

The module appears in Figure 3±2 and its schematic is shown in Figure 3±3.

Figure 3±2. TPA0202 EVM

RHP

C7

R10

RVDD

 

GND

 

R11

ROUT+

 

 

 

+

 

S5

 

 

 

 

 

 

 

 

 

GND

GND

 

 

 

C11

 

 

 

C6

R8

 

 

 

 

S6

RIN

 

 

 

 

 

ROUT±

 

C8

R9

 

S3

 

 

 

 

 

 

HP/L*

GND

 

R7

 

 

 

S4

 

 

 

 

 

C9 C10

 

 

SE/BTL*

 

 

 

 

 

 

 

 

 

 

 

 

 

TPA0202 SAMPLE EVM

 

 

 

 

R12

Lit.# SLOP202

U1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S8

 

 

 

D1

R13

S7

 

 

 

 

 

 

 

 

 

 

 

R2

 

 

 

 

 

 

 

GND

 

 

C3

R4

C5

 

S2

 

MUTE

 

 

 

C4

 

 

 

 

LIN

C1

R1

 

 

 

 

 

S1

LOUT±

 

 

 

 

 

 

GND

 

 

 

+

 

 

 

 

 

 

 

 

 

 

GND

LHP

 

R3

 

 

 

 

 

C2

 

C12

 

 

 

 

 

 

 

R5

 

LOUT+

 

 

 

LVDD

 

GND

 

Details 3-3

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Image 19
Texas Instruments manual TPA0202 Audio Power Amplifier Evaluation Module, ±2. TPA0202 EVM

TPA0202 specifications

The Texas Instruments TPA0202 is a high-performance Class-D audio amplifier designed for a variety of portable audio applications. Renowned for its efficiency and sound quality, the TPA0202 is an ideal choice for battery-operated devices such as mobile phones, tablet computers, and other handheld devices. With the continuous push for better audio experiences in compact formats, the TPA0202 stands out with its impressive specifications and features.

One of the key characteristics of the TPA0202 is its power efficiency. Operating at a high efficiency rate of up to 90%, this Class-D amplifier minimizes heat generation, allowing it to deliver more power to the audio output while extending battery life. This efficiency is especially crucial for portable devices, where battery performance is a key consideration.

The TPA0202 supports an output power of 2 watts per channel into 4 ohms, making it capable of driving small speakers or headphones with excellent sound quality. The device features a built-in differential input stage that enhances noise immunity, thereby ensuring cleaner audio reproduction. It also supports a wide supply voltage range from 3V to 5.5V, contributing to its versatility in different applications.

In terms of audio quality, the TPA0202 boasts low total harmonic distortion (THD) and exceptional linearity, resulting in rich, clear audio output. Additionally, it comes equipped with selectable gain settings, allowing designers to tailor the amplifier to various output requirements and system designs.

The amplifier also integrates various protection features, including thermal shutdown, short-circuit protection, and undervoltage detection, ensuring robust operation under different conditions. The TPA0202 is also simple to implement in designs, with a minimal external component requirement, further enhancing its appeal to engineers seeking quick and efficient solutions for audio amplification needs.

Moreover, the compact package size of the TPA0202 allows for easy integration into space-constrained designs. With its combination of high efficiency, excellent audio quality, and protective features, the Texas Instruments TPA0202 continues to be a compelling choice for developers looking to enhance audio performance in portable and battery-operated devices. Whether for consumer electronics or in more specialized applications, the TPA0202 delivers reliable and impressive sound amplification, making it a go-to component for modern audio solutions.