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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM48860TL датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM48860TL датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 18 page  October 17, 2008 LM48860 Ground-Referenced, Ultra Low Noise, Fixed Gain Stereo Headphone Amplifier General Description The LM48860 is a ground referenced, fixed-gain audio power amplifier capable of delivering 40mW per channel of contin- uous average power into a 16 Ω single-ended load with less than 1% THD+N from a 3V power supply. The LM48860 features a new circuit technology that utilizes a charge pump to generate a negative reference voltage. This allows the outputs to be biased about ground, thereby elimi- nating output-coupling capacitors typically used with normal single-ended loads. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM48860 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage appli- cations where minimal power consumption is a primary re- quirement. The LM48860 features a low-power consumption shutdown mode selectable for either channel separately. This is accom- plished by driving either the SD_RC (Shutdown Right Chan- nel) or SD_LC (Shutdown Left Channel) (or both) pins with logic low, depending on which channel is desired shutdown. Additionally, the LM48860 features an internal thermal shut- down protection mechanism. The LM48860 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM48860 has an internal fixed gain of 1.5V/V. Key Specifications ■ PSRR at 217Hz (V DD = 3.0V) 80dB (typ) ■ Stereo Power Output at V DD = 3V R L = 16Ω, THD+N = 1% 40mW (typ) ■ Shutdown Current 0.1μA (typ) ■ Internal Fixed Gain 1.5V/V (typ) ■ Operating Voltage 2.0V to 5.5V Features ■ Fixed logic levels with supply voltage ■ Ground referenced outputs ■ High PSRR ■ Available in space-saving micro SMD package ■ Ultra low current shutdown mode ■ Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions ■ No output coupling capacitors, snubber networks, bootstrap capacitors, or gain-setting resistors required ■ Shutdown either channel independently Applications ■ Mobile Phones ■ MP3 Players ■ PDAs ■ Portable electronic devices ■ Notebook PCs Boomer® is a registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation 300068 www.national.com |
Аналогичный номер детали - LM48860TL |
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Аналогичное описание - LM48860TL |
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