LM4941SDX/NOPB

音频放大器 1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown 8-WSON

DESCRIPON

The LM4941 is a fully differential audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25 watts of continuous average power to a 8Ω load with less than 1% distortion THD+N from a 5VDC power supply. The LM4941 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other small form factor applications where minimal PCB space is a primary requirement.

FEATURES

• Improved RF suppression, by up to 20dB over previous designs in selected applications

• Fully differential amplification

• Available in space-saving micro SMD package

• Ultra low current shutdown mode

• Can drive capacitive loads up to 100pF

• Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions

• 2.4 - 5.5V operation

• No output coupling capacitors, snubber networks or bootstrap capacitors required

APPLICATIONS

• Mobile phones

• PDAs

• Portable electronic devices