LM4937 Datasheet (National Semiconductor)

LM4937, Audio Sub-System

The LM4937 is an integrated audio sub-system designed for mono voice, stereo music cell phones connecting to base band processors with mono differential analog voice paths.

Operating on a 3.3V supply, it combines a mono speaker amplifier delivering 520mW into an 8Ω load, a stereo headphone amplifier

LM4937 Features

* an I2S serial interface for full range audio and an I2C or SPI compatible interface for control. The full range music path features an SNR of 85dB with an 18-bit 48kHz input. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of externa