Описание
The LM4910 is an audio power amplifier primarily designed for headphone applications in portable device applications. It iscapable of delivering 35mW of continuous average power to a 32? load with less than 1% distortion (THD+N) from a 3.3VDC power supply. The LM4910 utilizes a new circuit topology that eliminates output coupling capacitors and half-supply bypass capacitors. TheLM4910 contains advanced pop & click circuitry which eliminates noises caused by transients that would otherwise occur duringturn-on and turn-off. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of externalcomponents. Since the LM4910 does not require any output coupling capacitors, half-supply bypass capacitors, or bootstrapcapacitors, it is ideally suited for low-power portable applications where minimal space and power consumption are primaryrequirements. The LM4910 features a low-power consumption shutdown mode, activated by driving the shutdown pin with logic low. Additionally,the LM4910 features an internal thermal shutdown protection mechanism. The LM4910 is also unity-gain stable and can be configuredby external gain-setting resistors.
Eliminates half-supply bypass capacitorAdvanced pop & click circuitry eliminates noises during turn-on and turn-off Ultra-low current shutdown mode Unity-gain stable2.2V – 5.5V operation Available in space-saving MSOP, LLP, and SOIC packages
