LM49250 Key Features
- Power Output at VDD = 5V
- Shutdown Current
- Efficiency at 5V, 1W into 8Ω
- Efficiency at 3.6V, 500mW into 8Ω
LM49250 is Enhanced Emissions Suppression Stereo Class D Audio Sub-System manufactured by National Semiconductor.
| Part Number | Description |
|---|---|
| LM4925 | 2 Cell/ Single Ended Output 40mW Stereo Headphone Audio Amplifier |
| LM4920 | Stereo Headphone Amplifier |
| LM4921 | Low Voltage I2S 16-Bit Stereo DAC |
| LM4922 | 80mW Stereo Headphone Amplifier |
| LM4923 | 1.1 Watt Fully Differential Audio Power Amplifier |
The LM49250 is a fully integrated audio subsystem designed for stereo cell phone applications. The LM49250 bines a 2.4W/Ch stereo class D speaker amplifiers with a 45mW/Ch stereo ground referenced headphone amplifier, a class AB earpiece amplifier, National 3D enhancement, volume control, and an input mixer into a single device. The filterless class D amplifiers deliver 1.2W/Ch into an 8Ω load with <1% THD +N from a...