LM4840
Overview
The LM4840 is a monolithic integrated circuit that provides digital 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 (LM4840LQ, LM4840MH) 2.2W (typ) n into 4Ω (LM4840LQ, LM4840MH) 2.0W (typ) n into 8Ω (LM4840) 1.1W (typ)
- Single-ended mode - THD+N at 85mW into 32Ω 1.0% (typ)
- Shutdown current 0.2µA (typ) Features
- n n n n n n n
- PC98 and PC99 Compliant Digital Volume Control Interface System Beep Detect Stereo switchable bridged/single-ended power amplifiers “Click and pop” suppression circuitry Thermal shutdown protection circuitry Input Mux Capless headphone drivers Last volume memory from
