LM49100GR

• Mono and stereo inputs
• Thermal overload protection
• True ground headphone driver
• I 2 C control interface
• Input mute attenuation
• Stage 2 headphone attenuator
• Digital volume control in 32 steps
• 10 operating modes
• Minimal external components
• Click inhibition
• Micropower shutdown
• Save 3mm x 3mm in the available space with 25mm solder balls for the GR package
• RF rejection

illustrate

The LM49100 is a fully integrated audio subsystem capable of delivering 1.275W, 1% THD+N and 5V power supplies as a mono 8Ω bridged load (BTL). The LM49100 also has a stereoscopic true terrestrial headphone amplifier capable of 50mW continuous average power per channel to a 32Ω single-ended (SE) load, 1% THD+N

The LM49100 has three input channels. Can be used for dual SE input and stereo signals. The other input channels are fully differential and can be used for mono input signals. The LM49100 features a 32-step digital volume control and 10 different output modes. Mixer, volume control and device mode selection control, via I 2 C-compatible interface.

Overheating protection to prevent damage to the device under fault conditions. Advanced click suppression eliminates power-up/down and audible transient noise when off.

Main specifications

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• mobile phone
• Pocket PC
• laptop
• Portable electronics