- 制造厂商:TI
- 产品类别:音频
- 技术类目:音频放大器 - 耳机放大器
- 功能描述:具有可选电容耦合或 OCL 输出的汽车类 40mW 立体声耳机放大器
- 点击这里打开及下载LM4911Q-Q1的技术文档资料
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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).
Key Specifications
PSRR at 217Hz and 1kHz | 65dB (typ) |
Output Power at 1kHz with VDD = 2.4V, 1% THD+N into a 16Ω load | |
Output Power at 1kHz with VDD = 3V, 1% THD+N into a 16Ω load | |
Shutdown Current | 2.0µA (max) |
Output Voltage change on release from Shutdown VDD = 2.4V, RL = 16Ω (C-Coupled) | |
Mute Current | 100µA (max) |
- Output power (W)
- 0.04
- Analog supply (Min) (V)
- 2
- Analog supply (Max) (V)
- 5.5
- PSRR (dB)
- 65
- Rating
- Automotive
- Operating temperature range (C)
- -40 to 105
- Headphone channels
- Stereo
- Volume control
- No
- Shutdown current (ISD) (uA)
- 0.1
- Architecture
- Class-AB
- Iq per channel (Typ) (mA)
- 1
LM4911Q-Q1的完整型号有:LM4911QMM/NOPB、LM4911QMMX/NOPB,以下是这些产品的关键参数及官网采购报价:
LM4911QMM/NOPB,工作温度:-40 to 105,封装:VSSOP (DGS)-10,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM4911QMM/NOPB的批量USD价格:1.023(1000+)
LM4911QMMX/NOPB,工作温度:-40 to 105,封装:VSSOP (DGS)-10,包装数量MPQ:3500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM4911QMMX/NOPB的批量USD价格:.884(1000+)
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