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LM4860 Scheda tecnica(PDF) 1 Page - National Semiconductor (TI) |
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LM4860 Scheda tecnica(HTML) 1 Page - National Semiconductor (TI) |
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1 / 11 page  LM4860 Series 1W Audio Power Amplifier with Shutdown Mode General Description The LM4860 is a bridge-connected audio power amplifier capable of delivering 1W of continuous average power to an 8 Ω load with less than 1% THD+N over the audio spectrum 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 using surface mount packaging. Since the LM4860 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4860 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. It also includes two head- phone control inputs and a headphone sense output for external monitoring. The unity-gain stable LM4860 can be configured by external gain setting resistors for differential gains of up to 10 without the use of external compensation components. Higher gains may be achieved with suitable compensation. Key Specifications n THD+N at 1W continuous average output power into 8 Ω: 1% (max) n Instantaneous peak output power: >2W n Shutdown current: 0.6µA (typ) Features n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Small Outline (SO) packaging n Compatible with PC power supplies n Thermal shutdown protection circuitry n Unity-gain stable n External gain configuration capability n Two headphone control inputs and headphone sensing output Applications n Personal computers n Portable consumer products n Cellular phones n Self-powered speakers n Toys and games Typical Application Connection Diagram Small Outline Package 01198802 Top View Order Number LM4860M See NS Package Number M16A The Boomer® registered trademark is licensed to National Semiconductor for audio integrated circuits by Rockford Corporation. Patents pending. 01198801 FIGURE 1. Typical Audio Amplifier Application Circuit August 2000 © 2004 National Semiconductor Corporation DS011988 www.national.com |
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