LM4873MTEX
Stereo audio amplifiers for headphones and speakers in compact TSSOP packages
Manufacturer： ['national-semiconductor', 'ti']
series introduction
# LM4873MTEX Product Series Introduction
## 1. Overview
The LM4873MTEX product series is a remarkable offering in the realm of audio amplifier technology. Developed by a leading semiconductor manufacturer, these devices are engineered to provide high - quality audio amplification solutions for a wide range of applications. With a focus on performance, efficiency, and integration, the LM4873MTEX series stands out as a reliable choice for designers seeking to enhance the audio experience in their products.
## 2. Key Features
### 2.1 High - Quality Audio Output
- **Low Distortion**: The LM4873MTEX series is designed to minimize total harmonic distortion (THD). This ensures that the audio signal remains clean and faithful to the original input, delivering a rich and immersive listening experience. Whether it's music playback, voice communication, or other audio applications, the low distortion characteristic guarantees that the sound quality is not compromised.
- **High Signal - to - Noise Ratio (SNR)**: A high SNR is crucial for clear audio reproduction. These amplifiers offer an excellent SNR, which means that the desired audio signal is significantly stronger than any background noise. This results in a more pure and undisturbed audio output, making it ideal for applications where audio clarity is of utmost importance.
### 2.2 Power Efficiency
- **Class D Amplification**: The LM4873MTEX series utilizes Class D amplifier technology. Class D amplifiers are known for their high power efficiency compared to traditional Class AB amplifiers. They convert a large portion of the input power into useful audio output power, reducing power dissipation and heat generation. This not only helps in extending the battery life of portable devices but also allows for more compact and efficient designs.
- **Power Management Features**: The devices are equipped with advanced power management features. They can automatically adjust the power consumption based on the input audio signal level. For example, during periods of low - volume audio, the amplifier can operate in a low - power mode, further conserving energy.
### 2.3 Integration and Compact Design
- **Monolithic Integration**: The LM4873MTEX is a monolithic integrated circuit, which means that multiple audio amplifier components are integrated onto a single chip. This integration reduces the need for external components, simplifies the circuit design, and saves board space. It also improves the overall reliability of the system by minimizing the number of interconnections.
- **Small Package Size**: The series is available in a small - form - factor package, making it suitable for space - constrained applications such as mobile phones, tablets, portable media players, and other handheld devices. The compact design allows designers to incorporate high - quality audio amplification into their products without sacrificing valuable real estate.
### 2.4 Protection Features
- **Over - Temperature Protection**: To prevent damage to the amplifier due to excessive heat, the LM4873MTEX series is equipped with over - temperature protection. When the device temperature exceeds a certain threshold, the protection circuit will automatically reduce the output power or shut down the amplifier to avoid overheating.
- **Over - Current Protection**: Over - current protection safeguards the amplifier from damage caused by excessive current flow. If the output current exceeds a safe limit, the protection mechanism will limit the current to a safe level, ensuring the longevity and reliability of the device.
- **Short - Circuit Protection**: In case of a short - circuit in the output load, the short - circuit protection feature will quickly detect the fault and take appropriate action to protect the amplifier. This helps in preventing damage to the device and the connected audio system.
## 3. Applications
### 3.1 Mobile Devices
- **Smartphones and Tablets**: The LM4873MTEX series is an ideal choice for smartphones and tablets. Its high - quality audio output,
Images for reference
28-TSSOP
20-TSSOP Epad
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