Описание
The LM4907 is an audio power amplifier primarily designedfor demanding applications in mobile phones and other portablecommunication device applications. It is capable ofdelivering 1 Watt of continuous average power to an 8? BTLload with less than 1% distortion (THD+N) from a 5VDCpower supply.Boomer audio power amplifiers were designed specifically toprovide high quality output power with a minimal amount ofexternal components. The LM4907 does not require outputcoupling capacitors or bootstrap capacitors, and therefore isideally suited for mobile phone and other low voltage applicationswhere minimal power consumption is a primary requirement.The LM4907 features a low-power consumption shutdownmode which is achieved by driving the shutdown pin withlogic low. Additionally, the LM4907 features an internal thermalshutdown protection mechanism.The LM4907 contains advanced pop & click circuitry whicheliminates noise which would otherwise occur during turn-onand turn-off transitions.The LM4907 is unity-gain stable and can be configured byexternal gain-setting resistors.
- Available in space-saving LLP package
- Ultra low current shutdown mode
- BTL output can drive capacitive loads
- Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions
- 2.2 – 5.5V operation
- No output coupling capacitors, snubber networks or bootstrap capacitors required
- Unity-gain stable
- External gain configuration capability
