LM4910
The LM4910 is an audio power amplifier primarily designed for headphone applications in portable device applications. It is capable of delivering 35mW of continuous average power to a 32Ω load with less than 1% distortion (THD+N) from a 3.3VDC power supply.
The LM4910 utilizes a new circuit topology that eliminates output coupling capacitors and half-supply bypass capacitors. The LM4910 contains advanced pop & click circuitry which eliminates noises caused by transients that would otherwise occur during turn-on and turn-off.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4910 does not require any output coupling capacitors, half-supply bypass capacitors, or bootstrap capacitors, it is ideally suited for low-power portable applications where minimal space and power consumption are primary requirements.
The LM4910 features a low-power consumption shutdown mode, activated by driving the shutdown pin with logic low. Additionally, the LM4910 features an internal thermal shutdown protection mechanism. The LM4910 is also unity-gain stable and can be configured by external gain-setting resistors.
Key Specifications
PSRR at f = 217Hz | 65dB (typ) |
Power Output at VDD = 3.3V, RL = 32Ω, and THD | 35mW (typ) |
Shutdown Current | 0.1µA (typ) |
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
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* | 数据表 | LM4910 Output Capacitor-less Stereo 35mW Headphone Amplifier 数据表 (Rev. G) | 2007年 3月 9日 |
设计和开发
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