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LM4952 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4952 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  LM4952 3.1W Stereo-SE Audio Power Amplifier with DC Volume Control General Description The LM4952 is a dual audio power amplifier primarily de- signed for demanding applications in flat panel monitors and TV’s. It is capable of delivering 3.1 watts per channel to a 4 Ω single-ended load with less than 1% THD+N when powered by a 12V DC power supply. Eliminating external feedback resistors, an internal, DC- controlled, volume control allows easy and variable gain adjustment. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4952 does not require boot- strap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and mini- mal size. The LM4952 features a low-power consumption active-low shutdown mode. Additionally, the LM4952 features an inter- nal thermal shutdown protection mechanism along with short circuit protection. The LM4952 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions. Key Specifications j Quiscent Power Supply Current 18mA (typ) j POUT V DD = 12V, RL =4 Ω, 10% THD+N 3.8W (typ) j Shutdown current 55µA (typ) Features n Pop & click circuitry eliminates noise during turn-on and turn-off transitions n Low current, active-low shutdown mode n Low quiescent current n Stereo 3.8W output, R L =4 Ω n DC-controlled volume control n Short circuit protection Applications n Flat Panel Monitors n Flat panel TV’s n Computer Sound Cards Connection Diagram 200809E9 Top View Order Number LM4952TS See NS Package Number TS9A U = Wafer Fab Code Z = Assembly Plant Code XY = Date Coce TT = Die Traceability L4952TS = LM4952TS Boomer® is a registered trademark of National Semiconductor Corporation. August 2004 © 2004 National Semiconductor Corporation DS200809 www.national.com |
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