LM49151TLX

• Ë 2 S-class amplifier
• Ground is the reference output - eliminates output coupling capacitance
• I 2 C Programmable clip clip control function
• Voltage limiter horn protection
• I 2 C quantity and mode control
• Ear amplifier
• Click Advanced Noise Suppression
• Low supply current
• Micropower shutdown
• 20-bump micro SMD package

illustrate

LM49151 is an audio subsystem designed for portable handheld applications such as fully integrated cellular phones. LM49151 combined with a 1.25W single E 2 Class S Class D amplifier, Class AB headphone driver 125MW, 42mW/channel stereo grounding reference headphone driver, volume control, input mixer/multiplexer, and speaker protection to a single device.

LM49151 Class D speaker amplifier features the country's unique Automatic Level Control (ALC) that provides two I 2 C programmable clip control and speaker protection functions without clipping. My E 2 S（增强发射抑制）D类放大器采用拥有专利的超低电磁干扰的PWM架构，显着降低RF辐射，同时保留了音频质量和效率，同时提供1.25W The 42mW/channel headphone driver feature, a nationwide ground reference architecture, creates an output from a single supply ground reference, eliminating the need for bulky, expensive DC capacitors, saving space and minimizing system costs.

LM49151 function speaker and headphone inputs separate volume control. Mode selection, shutdown control, volume control, through I 2 C compatible interface. LM49151's superior click and pop suppression eliminates audible transient noise when power-up/down and off.

Note: This file is not a complete data sheet. For more details about this product or to order samples, please contact your local national semiconductor sales office or visit //www.national.com/support/dir.html

Key specifications:

apply

• mobile phone
• handheld computer
• laptop
• Portable electronic devices
• MP3 player