LM4811数据手册开发板套件编程器的评估板-音频放大器规格书PDF

描述 Description

The LM4811 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω load with 0.1% (THD+N) from a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4811 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4811 features a digital volume control that sets the amplifier's gain from +12dB to −33dB in 16 discrete steps using a two−wire interface. The unity-gain stable LM4811 also features an externally controlled, active-high, micropower consumption shutdown mode. It also has an internal thermal shutdown protection mechanism.

特性 Features

• Digital Volume Control Range from +12dB to −33dB
• WSON and VSSOP Surface Mount Packaging
• \"Click and Pop\" Suppression Circuitry
• No Bootstrap Capacitors Required
• Low Shutdown Current
Key Specifications
• THD+N at 1kHz, 105mW Continuous Average Output Power into 16Ω 0.1 % (typ)
• THD+N at 1kHz, 70mW Continuous  Average Power into 32Ω 0.1 % (typ)
• Shutdown Current 0.3 μA (typ)