Introducing the LM4889LD from Texas Instruments

The LM4889LD is a state-of-the-art audio power amplifier designed by Texas Instruments (TI), a leader in semiconductor solutions. This product is engineered to provide high-quality sound amplification with minimal power consumption, making it an ideal choice for portable applications where battery life is crucial.

Key Features

• Output Power: The LM4889LD is capable of delivering 1W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V power supply.
• Boomer Audio Power Amplifier: As part of TI's Boomer series, the LM4889LD is specifically designed to provide high-quality output power with a minimal number of external components, perfectly suited for mobile phones, PDAs, laptops, and other portable devices.
• Efficiency: The device features a high efficiency, which not only conserves energy but also reduces the heat generated, a critical aspect for handheld devices.
• Micro-Power Shutdown Mode: To further extend battery life, the LM4889LD includes a micro-power shutdown mode feature that significantly reduces power consumption when the amplifier is not in use.
• External Gain Configuration: It allows for flexibility in gain settings with external gain-setting resistors.

Applications

The LM4889LD is an excellent audio amplification solution for a variety of portable devices, including:

• Mobile phones
• PDAs
• Portable media players
• Notebook and desktop computers
• Portable gaming devices

Technical Specifications

With advanced technical specifications, the LM4889LD stands out in its class:

• Supply Voltage Range: 2.7V - 5.5V
• PSRR: 70dB (typ) at 1kHz
• Shutdown Current: 0.7µA (typ)
• THD+N: 0.6% (typ) at 1kHz
• SNR: 90dB (typ)

The LM4889LD is available in a space-saving LLP package, which is essential for today's compact device designs. Its performance, coupled with Texas Instruments' reputation for quality and reliability, makes the LM4889LD a premier choice for designers looking to enhance the audio experience in their next-generation portable devices.