The LM4911/LM4911Q is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16Ω load or 25mW per channel into a 32Ω load at 1% THD+N from a 3V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4911/LM4911Q does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. In addition, the LM4911/LM4911Q may be configured for either single-ended capacitively coupled outputs or for OCL outputs (patent pending).
The LM4911/LM4911Q features a low-power consumption shutdown mode and a power mute mode that allows for faster turn on time with less than 1mV voltage change at outputs on release. Additionally, the LM4911/LM4911Q features an internal thermal shutdown protection mechanism.
The LM4911/LM4911Q is unity gain stable and may be configured with external gain-setting resistors.
A Q-grade version is available for automotive applications. It is AEC-Q100 grade 2 qualified and packaged in a 10–pin MSOP package (LM4911QMM).
|Output Power (W)||0.145|
|Operating Temperature Range (C)||-40 to 85|
|Approx. Price (US$)||0.65 | 1ku|
|Shutdown Current (ISD) (uA)||0.1|
|LM4911/911Q Stereo 40mW Low Noise HP Amp w/Selectable Cap Coupled or OCL Out||1847||2011年 6月 8日|
|AN-1849 An Audio Amplifier Power Supply Design||1858||2013年 5月 1日|
|Guidelines for Measuring Audio Power Amplifier Performance||765||2001年 10月 30日|
|型号||试生产 / 生产材料||状态||温度(oC)||价格（美元） | Quantity||封装 | 引脚||器件标记||封装数量 | 载体|
|LM4911MM/NOPB||生产||ACTIVE||-40 to 85||0.65 | 1ku||VSSOP (DGS)||GA3||1000 | LARGE T&R|