lme49811tb National Semiconductor Corporation, lme49811tb Datasheet
lme49811tb
Manufacturer Part Number
lme49811tb
Description
Lme49811 Audio Power Amplifier Series High Fidelity 200 Volt Power Amplifier Input Stage With Shutdown
Manufacturer
National Semiconductor Corporation
Datasheet
1.LME49811TB.pdf
(18 pages)
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© 2008 National Semiconductor Corporation
LME49811 Audio Power Amplifier Series
High Fidelity 200 Volt Power Amplifier Input Stage with
Shutdown
General Description
The LME49811 is a high fidelity audio power amplifier input
stage designed for demanding consumer and pro-audio ap-
plications. Amplifier output power may be scaled by changing
the supply voltage and number of output devices. The
LME49811 is capable of driving an output stage to deliver in
excess of 500 watts single-ended into an 8 ohm load in the
presence of 10% high line headroom and 20% supply regu-
lation.
The LME49811 includes thermal shut down circuitry that ac-
tivates when the die temperature exceeds 150°C. The
LME49811's shutdown function when activated, forces the
LME49811 into shutdown state.
Typical Application
Overture® is a registered trademark of National Semiconductor Corporation.
FIGURE 1. Typical Audio Amplifier Application Circuit
300048
Key Specifications
Features
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Applications
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Very high voltage operation
Scalable output power
Minimum external components
External compensation
Thermal Shutdown
Powered subwoofers
Pro audio
Powered studio monitors
Audio video receivers
Guitar Amplifiers
High voltage industrial applications
Wide operating voltage range
PSRR (f = DC)
THD+N (f = 1kHz)
Output Drive Current
30004862
January 4, 2008
0.00035% (typ)
±20V to ±100V
www.national.com
115dB (typ)
9mA
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