LM3886 Datasheet, PDF (1/31 Pages) National Semiconductor (TI) – Overture TM Audio Power Amplifier Series High-Performance 68W Audio Power Amplifier w/Mute

LM3886
www.ti.com
SNAS091C – MAY 1999 – REVISED MARCH 2013
LM3886 Overture™ Audio Power Amplifier Series
High-Performance 68W Audio Power Amplifier w/Mute
Check for Samples: LM3886
FEATURES
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•23 68W Cont. Avg. Output Power into 4Ω at V_CC =
±28V
• 38W Cont. Avg. Output Power into 8Ω at V_CC =
±28V
• 50W Cont. Avg. Output Power into 8Ω at V_CC =
±35V
• 135W Instantaneous Peak Output Power
Capability
• Signal-to-Noise Ratio ≥ 92dB
• An Input Mute Function
• Output Protection from a Short to Ground or
to the Supplies via Internal Current Limiting
Circuitry
• Output Over-Voltage Protection against
Transients from Inductive Loads
• Supply Under-Voltage Protection, not Allowing
Internal Biasing to Occur when |V_EE| + |V_CC| ≤
12V, thus Eliminating Turn-On and Turn-Off
Transients
• 11-Lead TO-220 Package
• Wide Supply Range 20V - 94V
DESCRIPTION
The LM3886 is a high-performance audio power
amplifier capable of delivering 68W of continuous
average power to a 4Ω load and 38W into 8Ω with
0.1% THD+N from 20Hz–20kHz.
The performance of the LM3886, utilizing its Self
Peak Instantaneous Temperature (°Ke) (SPiKe)
protection circuitry, puts it in a class above discrete
and hybrid amplifiers by providing an inherently,
dynamically protected Safe Operating Area (SOA).
SPiKe protection means that these parts are
completely safeguarded at the output against
overvoltage, undervoltage, overloads, including shorts
to the supplies, thermal runaway, and instantaneous
temperature peaks.
The LM3886 maintains an excellent signal-to-noise
ratio of greater than 92dB with a typical low noise
floor of 2.0µV. It exhibits extremely low THD+N
values of 0.03% at the rated output into the rated
load over the audio spectrum, and provides excellent
linearity with an IMD (SMPTE) typical rating of
0.004%.
APPLICATIONS
• Component stereo
• Compact stereo
• Self-powered speakers
• Surround-sound amplifiers
• High-end stereo TVs
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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 © 1999–2013, Texas Instruments Incorporated