MP3 Player

System Overview	System Diagram
MP3 players have revolutionized the way we listen and distribute music. As technology for power management, display lighting, and audio amplifiers advance, MP3 players will become smaller, sound crisper, and cost less. With National's on-board battery management devices, users are able to listen to hours of uninterrupted music. The newest development for MP3 players is the integration of Bluetooth^TM interfaces. National offers leading-edge solutions for audio amplifiers and interfaces, with our Boomer® audio products and our Simply Blue family of Bluetooth^TM products. Component Highlights * Boost switching regulator - high-efficiency, low-input voltage (0.9V min) step-up converters extend battery life. * White LED drivers - efficiency, low noise, and simple to drive, these devices produce brightness matching and color uniformity in chip-scale packaging. * Microphone amplifier - replacing the JFET microphone, this amplifier solution offers excellent gain accuracy and temperature stability in a tiny 4-bump micro SMD package. * Interface - Bluetooth modules in the Simply Blue family include a complete embedded Bluetooth protocol stack, application specific profiles, and a high-level command interpreter. * Audio amplifier - Boomer amplifiers consume little power, yet provide high-quality output power with a minimum number of external components.
Related Diagrams

System Overview

System Diagram

MP3 players have revolutionized the way we listen and distribute music. As technology for power management, display lighting, and audio amplifiers advance, MP3 players will become smaller, sound crisper, and cost less. With National's on-board battery management devices, users are able to listen to hours of uninterrupted music. The newest development for MP3 players is the integration of Bluetooth^TM interfaces. National offers leading-edge solutions for audio amplifiers and interfaces, with our Boomer® audio products and our Simply Blue family of Bluetooth^TM products.

Component Highlights

* Boost switching regulator - high-efficiency, low-input voltage (0.9V min) step-up converters extend battery life.
* White LED drivers - efficiency, low noise, and simple to drive, these devices produce brightness matching and color uniformity in chip-scale packaging.
* Microphone amplifier - replacing the JFET microphone, this amplifier solution offers excellent gain accuracy and temperature stability in a tiny 4-bump micro SMD package.
* Interface - Bluetooth modules in the Simply Blue family include a complete embedded Bluetooth protocol stack, application specific profiles, and a high-level command interpreter.
* Audio amplifier - Boomer amplifiers consume little power, yet provide high-quality output power with a minimum number of external components.

Related Diagrams