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LM4882M Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4882M Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 12 page LM4882 250mW Audio Power Amplifier with Shutdown Mode General Description The LM4882 is a single-ended audio power amplifier ca- pable of delivering 250 mW of continuous average power into an 8 Ω load with 1% (THD + N) 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 LM4882 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power por- table systems. The LM4882 features an externally controlled, low power consumption shutdown mode which is virtually clickless and popless, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4882 can be configured by external gain-setting resistors. Key Specifications n THD+Nat1kHz at 250 mW continuous average output power into 8 Ω 1.0% (max) n Output Power at 1% THD+N at 1kHz into 4 Ω 380mW (typ) n THD+Nat1kHz at 85 mW continuous average output power into 32 Ω 0.1% (typ) n Shutdown Current 0.7 µA (typ) Features n MSOP surface mount packaging n “Click and Pop” Suppression Circuitry n Supply voltages from 2.4V–5.5V n Operating Temperature −40˚C to 85˚C n Unity-gain stable n External gain configuration capability n No bootstrap capacitors, or snubber circuits are necessary Applications n Personal Computers n Cellular Phones n General Purpose Audio Typical Application Connection Diagram Boomer® is a registered trademark of National Semiconductor Corporation. DS100030-1 *Refer to the Application Information Section for information concerning proper selection of the input and output coupling capacitors. FIGURE 1. Typical Audio Amplifier Application Circuit MSOP and SOIC Package DS100030-2 Top View Order Number LM4882MM or LM4882M See NS Package Number MUA08A or M08A January 1998 © 1998 National Semiconductor Corporation DS100030 www.national.com |
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