LM4946
Description
The LM4946 is an audio power amplifier capable of delivering 540mW of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N, 35mW per channel of continuous average power into stereo 32Ω single-ended (SE) loads with 1% THD+N, or an output capacitor-less (OCL) configuration with identical specifications as the SE configuration, from a 3.3V power supply. The LM4946 has three input channels: one pair for a two-channel stereo signal and the third for a differential single-channel mono input.
Key Features
- 2 I2C/SPI Control Interface
- I2C/SPI Programmable TI 3D Audio
- I2C/SPI Controlled 32 Step Digital Volume Control (-54dB to +18dB)
- Three Independent Volume Channels (Left, Right, Mono)
- Eight Distinct Output Modes
- WQFN and DSBGA Surface Mount Packaging
- Thermal Shutdown Protection
- Low Shutdown Current (0.02uA, typ)
- RF Immunity Topology
