LM4938
Overview
The LM4938 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω (Note 1) with less than 1.0% THD or 2.2W into 3Ω (Note 2) with less than 1.0% THD. Boomer ® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components.
- PO at 1% THD+N n into 3Ω n into 4Ω n into 8Ω
- Single-ended mode - THD+N at 92mW into 32Ω
- Shutdown current 2.2W (typ) 2.0W (typ) 1.3W (typ) 1.0%(typ) 0.5µA (typ) Features
- Improved click and pop circuitry virtually eliminates noise during turn on/off transitions
- DC Volume Control Interface
- System Beep Detect
- Stereo switchable bridged/single-ended power amplifiers
- Selectable internal/external gain and bass boost
- Thermal shutdown protection circuitry
- Unity gain stable
