LM4911Q-Q1:Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output

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).

参数parametrics
参数LM4911Q-Q1
Output Power (W)0.04
PSRR (dB)65
RatingAutomotive
Operating Temperature Range (C)-40 to 105
Approx. Price (US$)0.64 | 1ku
Headphone ChannelsStereo
Special FeaturesAECQ100 Grade 2, OCL
Shutdown Current (ISD) (uA)0.1
数据表 (1)
标题类型大小 (KB)日期
LM4911/911Q Stereo 40mW Low Noise HP Amp w/Selectable Cap Coupled or OCL OutPDF18472011年 6月 8日
应用手册 (2)
标题类型大小 (KB)日期
AN-1849 An Audio Amplifier Power Supply DesignPDF18582013年 5月 1日
Guidelines for Measuring Audio Power Amplifier PerformancePDF7652001年 10月 30日
订购型号
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
LM4911QMM/NOPB生产ACTIVE-40 to 1050.64 | 1kuVSSOP (DGS)GC91000 | LARGE T&R
LM4911QMMX/NOPB生产ACTIVE-40 to 1050.64 | 1kuVSSOP (DGS)GC93500 | LARGE T&R
LM4911/911Q Stereo 40mW Low Noise HP Amp w/Selectable Cap Coupled or OCL Out LM4911Q-Q1
AN-1849 An Audio Amplifier Power Supply Design TLV320DAC3100-Q1
Guidelines for Measuring Audio Power Amplifier Performance TLV320DAC3100-Q1
LM4911Q-Q1