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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM4910 bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM4910 bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
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1 / 22 page  LM4910 Output Capacitor-less Stereo 35mW Headphone Amplifier General Description 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 toa32 Ω load with less than 1% distortion (THD+N) from a 3.3V DC power supply. The LM4910 utilizes a new circuit topology that eliminates output coupling capacitors and half-supply bypass capaci- tors (patent pending). 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 capaci- tors, or bootstrap capacitors, it is ideally suited for low-power portable applications where minimal space and power con- sumption 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 shut- down protection mechanism. The LM4910 is also unity-gain stable and can be configured by external gain-setting resis- tors. Key Specifications n PSRR at f = 217Hz 65dB (typ) n Power Output at V DD = 3.3V, RL =32 Ω, and THD ≤ 1% 35mW (typ) n Shutdown Current 0.1µA (typ) Features n Eliminates headphone amplifier output coupling capacitors (patent pending) n Eliminates half-supply bypass capacitor (patent pending) n Advanced pop & click circuitry eliminates noises during turn-on and turn-off n Ultra-low current shutdown mode n Unity-gain stable n 2.2V - 5.5V operation n Available in space-saving MSOP, LLP, and SOIC packages Applications n Mobile Phones n PDAs n Portable eletronics devices n Portable MP3 players Typical Application Boomer® is a registered trademark of National Semiconductor Corporation. 20030565 FIGURE 1. Typical Audio Amplifier Application Circuit February 2003 © 2003 National Semiconductor Corporation DS200305 www.national.com |
Số phần tương tự - LM4910 |
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Mô tả tương tự - LM4910 |
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