具有低电平停机模式的 LM4809 双路 105mW 耳机放大器
The LM4809 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 LM4809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.
The unity-gain stable LM4809 can be configured by external gain-setting resistors.
The LM4809 features an externally controlled, active-low, micropower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.
- Active-Low Shutdown Mode
- "Click and Pop" Reduction Circuitry
- Low Shutdown Current
- WSON, MSOP, and SOIC Surface Mount Packaging
- No Bootstrap Capacitors Required
- Unity-Gain Stable
- THD+N at 1kHz at 105mW Continuous Average Power into 16Ω 0.1% (typ)
- THD+N at 1kHz at 70mW Continuous Average Power into 32Ω 0.1% (typ)
- Shutdown Current 0.4µA (typ)
|Operating Temperature Range
(C)||-40 to 85|
|Approx. Price (US$)||0.37 | 1ku|
|Shutdown Current (ISD)
|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|
|LM4809LDX/NOPB||生产||ACTIVE||-40 to 85||0.42 | 1ku||WSON (NGL)||G09||4500 | LARGE T&R|
|LM4809MM/NOPB||生产||ACTIVE||-40 to 85||0.42 | 1ku||VSSOP (DGK)||G09||1000 | LARGE T&R|
|LM4809MMX/NOPB||生产||ACTIVE||-40 to 85||0.42 | 1ku||VSSOP (DGK)||G09||3500 | LARGE T&R|