TPA3002D2PHPR Integrated Circuits (ICs)

Application Field and Working Principle of TPA3002D2PHPR

Linear-amplifiers-audio is a category of electronic amplifiers primarily designed to provide good-quality audio-signal amplification with low-cost and low-power consumption solutions. As an experienced linear amplifier manufacturer, Texas Instruments (TI) offers the TPA3002D2PHPR, a pre-programmed programmable gain dual-channel audio amplifier.

Optimized for headphone/earphone audio-recording/playback applications, the TPA3002D2PHPR enables manufacturers to reduce board space on their audio devices, achieve superior audio-amplifier performance, and support popular audio-format standards. Its flexibility and small footprint make the TPA3002D2PHPR an ideal solution for various audio-amplifier applications.

Application Field

TPA3002D2PHPR is an advanced audio-amplifier to provide the dedicated solution for two channels in headphone/earphone applications. The key features include 2.8 V to 5.5 V supply voltage, normal and low power mode, single-ended and differential outputs, programmable gain adjustment, Class-D headphone amplifier, and programmable gain adjustment. The low-noise, low-power operation and low-power-mode make the TPA3002D2PHPR ideal for portable audio-recording and playback applications. With built-in pulse-width-modulation (PWM) controller, the TPA3002D2PHPR enables users to switch between normal and low-power modes while maintaining audio-amplifier performance. With its simple gain programming, it is also suitable for audio-amplifier applications, such as mp3 players, PMPs, smartphones and tablets, headphones and earphones, digital audio players and portable music players.

Working Principle

The TPA3002D2PHPR is based on TI’s proprietary Class-D technology and high-performance, transimpedance audio-amplification architecture. It is also designed to meet the requirements of headphone and earphone applications as well as digital audio signal processing. This amplifier works on a single voltage scheme, which means that it does not require any power conversion, thus eliminating the need for bulky, costly, and power-hungry external drivers. Instead, it utilizes an efficient switching operation to produce an output signal. The advantage of the TPA3002D2PHPR is that it provides high-fidelity sound output with low-power consumption.

The TPA3002D2PHPR audio-amplifier utilizes pulse-width-modulation (PWM) to achieve high efficiency and low distortion. The majority of the cycles are spent in an low-power mode, conserving power. This reduces the need for large heatsinks or cooling fins, increasing the efficiency of the audio-amplifier, while keeping it quiet. The PWM technology also allows the amplifier to easily accommodate higher audio frequencies, making it great for portable audio-playback or recording applications.

To ensure high-fidelity playback, the TPA3002D2PHPR amplifier also features a pre-programmed, adjustable-gain feature. This feature allows the user to adjust the output level of the audio signal, thus adjusting the loudness or sound volume of the device. The adjustable-gain feature also minimizes audio-distortion and optimizes power consumption.

With its combination of high-quality audio-signal amplification and low-power consumption, the TPA3002D2PHPR is a great choice for audio applications, such as mp3 players, PMPs, phones and tablets, headphones and earphones, and portable music players.