Datasheet Details
| Part number | LM49270 |
|---|---|
| Manufacturer | National Semiconductor (now Texas Instruments) |
| File Size | 2.51 MB |
| Description | Filterless 2.2W Stereo Class D Audio Subsystem |
| Datasheet |
 LM49270 Datasheet
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General Description
The LM49270 is a fully integrated audio subsystem designed for stereo multimedia applications.
The LM49270 combines a 2.2W stereo Class D amplifier with a 155mW stereo headphone amplifier, volume control, headphone sense, and National’s unique 3D sound enhancement into a single device.
Key Features
- National’s Output Capacitor-less (OCL) architecture that eliminates the output coupling capacitors required by traditional headphone amplifiers. The IC features a headphone sense input (HPS) that automatically detects the presence of a headphone and configures the device accordingly. The LM49270 can automatically switch from OCL headphone output to a line driver output. If the VOC pin is pulled to GND, the VOC amplifier is disabled and the VOC pin is internally set to GND. This feature allows th.