LM4782TABD Datasheet, PDF (1/32 Pages) Texas Instruments – Audio Power Amplifier Series 3 Channel 25W Audio Power Amplifier with Mute and Standby

LM4782, LM4782TABD
www.ti.com
SNAS231A – MAY 2004 – REVISED MARCH 2006
LM4782 Overture™ Audio Power Amplifier Series 3 Channel 25W Audio Power Amplifier
with Mute and Standby
Check for Samples: LM4782, LM4782TABD
FEATURES
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•23 SPiKe Protection
• Low External Component Count
• Quiet Fade-In/Out Mute Mode
• Low Power Standby Mode
• Wide Supply Range: 20V - 64V
• Signal-to-Noise Ratio ≥ 98dB (ref. to P_O = 1W)
APPLICATIONS
• Audio Amplifier for Component Stereo
• Audio Amplifier for Compact Stereo
• Audio Amplifier for Home Theater in a Box
(HTB)
• Audio Amplifier for Self-Powered Speakers
• Audio Amplifier for High-End and HD TVs
KEY SPECIFICATIONS
• Output Power/Channel with 0.5% THD+N, 1kHz
into 8Ω: 25W (typ)
• THD+N at 3x15W into 8Ω (20Hz - 20kHz):
0.2% (typ)
• THD+N at 3x15W into 6Ω (20Hz - 20kHz):
0.3% (typ)
• THD+N at 3x15W into 4Ω (20Hz - 20kHz):
0.4% (typ)
• Mute Attenuation: 115dB (typ)
• PSRR: 85dB (min)
• Slew Rate: 18V/μs (typ)
DESCRIPTION
The LM4782 is a three channel audio amplifier
capable of typically delivering 25W per channel of
continuous average output power into an 8Ω load
with less than 0.5% THD+N from 20Hz - 20kHz.
The LM4782 is fully protected utilizing TI's Self Peak
Instantaneous Temperature (°Ke) (SPiKe^TM)
protection circuitry. SPiKe provides a dynamically
optimized Safe Operating Area (SOA). SPiKe
protection completely safeguards the LM4782's
outputs against over-voltage, under-voltage,
overloads, shorts to the supplies or GND, thermal
runaway and instantaneous temperature peaks. The
advanced protection features of the LM4782 places it
in a class above discrete and hybrid amplifiers.
Each amplifier of the LM4782 has an independent
smooth transition fade-in/out mute and a power
conserving standby mode. The mute and standby
modes can be controlled by external logic.
The LM4782 can easily be configured for bridge or
parallel operation for higher power and bi-amp
solutions.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Overture is a trademark of dcl_owner.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2006, Texas Instruments Incorporated