LM4990 Overview
The LM4990 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable munication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power (NGZ and DGQ only) to a 4Ω BTL load with less than 1% distortion (THD+N+N) from a 5VDC power supply. Boomer audio power amplifiers were...
LM4990 Key Features
- 2 Available in Space-Saving Packages: WSON, Exposed-DAP MSOP-PowerPAD, VSSOP, and DSBGA
- Ultra Low Current Shutdown Mode
- Improved Click and Pop Circuitry Eliminates
- 5.5V Operation
- No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
- Unity-Gain Stable
- External Gain Configuration Capability
- User Selectable Shutdown High or Low Logic Level
