The LM4844 is an integrated audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it combines a stereo speaker amplifier delivering 495mW per channel into an 8Ω load and a stereo OCL headphone amplifier delivering 33mW per channel into a 32Ω load.
It integrates the audio amplifiers, volume control, mixer, power management control, and National 3D enhancement all into a single package. In addition, the LM4844 routes and mixes the stereo and mono inputs into 10 distinct output modes. The LM4844 is controlled through an I 2C compatible interface.
Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components
| LM4844 | |
| Speaker Channels | Stereo |
| Speaker Output Power/Ch (W) | 1.2 |
| Speaker PSRR (dB) | 71 |
| Headphone Output Power/Ch (mW) | 80 |
| Headphone PSRR (dB) | 78 |
| Audio Mode Control | I2C |
| Supply Voltage (Min) (V) | 2.7 |
| Supply Voltage (Max) (V) | 5.5 |
