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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM4980SD датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM4980SD датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  LM4980 2 Cell Battery, 1mA, 42mW Per Channel High Fidelity Stereo Headphone Audio Amplifier for MP3 players General Description The LM4980 is a stereo headphone audio amplifier, which when connected to a 3.0V supply, delivers 42mW to a 16 Ω load with less than 1% THD+N. With the LM4980 packaged in the SD package, the customer benefits include low profile and small size. This package minimizes PCB area and maxi- mizes output power. The LM4980 features circuitry that significantly reduces out- put transients (“clicks” and “pops”) while driving headphones during device turn-on and turn-off without costly external additional circuitry. The LM4980 also includes an externally controlled low-power consumption active-low shutdown mode, and thermal shutdown. Boomer audio power amplifi- ers are designed specifically to use few external compo- nents and provide high quality output power in a surface mount package. Key Specifications j Output power (RL=16 Ω,V DD = 3.0V, THD+N = 1%) 42mW (typ) j Quiescent current (VDD = 3V) 1mA (typ) j Micropower shutdown current 0.1µA (typ) j Supply voltage operating range 1.5V < V DD < 3.3V j PSRR @ 1kHz, VDD = 3.0V 90dB (typ) j PSRR @ 217Hz, VDD = 3.0V 100dB (typ) Features n 2-cell 1.5V to 3.3V battery operation n Unity-gain stable n “Click and pop” suppression circuitry for shutdown and power on/off transient with headphone loads n Active low micro-power shutdown n Thermal shutdown protection circuitry Applications n Portable two-cell audio products n Portable two-cell electronic devices n Portable MP3 player/recorders Typical Application Boomer® is a registered trademark of National Semiconductor Corporation. 20142901 FIGURE 1. Block Diagram July 2005 © 2005 National Semiconductor Corporation DS201429 www.national.com |
Аналогичный номер детали - LM4980SD |
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Аналогичное описание - LM4980SD |
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