The LM4808MX/NOPB is a specific model of audio power amplifier integrated circuit (IC) manufactured by Texas Instruments. It is designed for driving low-power audio applications, particularly suitable for headphone and earphone drivers.
Key Features of LM4808MX/NOPB:
1. Audio Power Amplifier: The LM4808MX/NOPB is a Class AB audio power amplifier capable of driving low-impedance loads like headphones and earphones.
2. Output Power: The IC can deliver up to 105mW of continuous output power per channel into a 16Ω load with less than 1% total harmonic distortion (THD).
3. Low Quiescent Current: The device is designed to operate with low quiescent current, making it suitable for battery-powered applications.
4. Differential Inputs: The IC accepts differential input signals, allowing for improved noise rejection and reduced input coupling components.
5. Shutdown Mode: The LM4808MX/NOPB features a shutdown mode, which helps to conserve power when the amplifier is not in use.
6. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection to prevent overheating and ensure safe operation.
7. Small Package: The "MX" in the part number indicates that the IC is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package, providing space-efficient design options.
Applications:
The LM4808MX/NOPB audio power amplifier is commonly used in various low-power audio applications, including but not limited to:
1. Headphone and Earphone Amplifiers: The IC is widely used in portable media players, smartphones, tablets, and other devices to drive headphone and earphone transducers.
2. Personal Audio Devices: It is employed in personal audio devices like MP3 players, portable gaming consoles, and digital voice recorders.
3. Wearable Devices: The LM4808MX/NOPB is suitable for driving audio output in wearable devices, such as smartwatches and fitness trackers.
4. Communication Devices: The IC can be used in hands-free communication devices and Bluetooth audio accessories.
5. Audio Accessories: It finds use in audio accessories like headphone amplifiers and headphone jack modules.
Please note that when using the LM4808MX/NOPB audio power amplifier in any application, it is essential to refer to the manufacturer's datasheet and application notes for proper circuit design, thermal considerations, and safe operating conditions. Additionally, appropriate protection measures should be implemented to ensure reliable and safe operation of the audio amplifier in the target application.
