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LM4701 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM4701
Description  LM4701 Overture™ Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4701 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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LM4701
OvertureAudio Power Amplifier Series
30W Audio Power Amplifier with
Mute and Standby Modes
General Description
The LM4701 is an audio power amplifier capable of deliver-
ing typically 30W of continuous average output power into an
8
Ω load with less than 0.1% (THD + N).
The LM4701 has an independent smooth transition fade-in/
out mute and a power conserving standby mode which can
be controlled by external logic.
The performance of the LM4701, utilizing its Self Peak In-
stantaneous Temperature (˚Ke) (SPiKe) Protection Cir-
cuitry, places it in a class above discrete and hybrid amplifi-
ers by providing an inherently, dynamically protected Safe
Operating Area (SOA). SPiKe Protection means that these
parts are completely safeguarded at the output against over-
voltage, undervoltage, overloads, including thermal runaway
and instantaneous temperature peaks.
Key Specifications
n THD+N at 1 kHz at continuous average output power of
25W into 8
Ω:
0.1% (max)
n THD+N from 20 Hz to 20 kHz at 30W of continuous
average output power into 8
Ω:
0.08% (typ)
n Standby current:
2.1 mA (typ)
Features
n SPiKe Protection
n Minimal amount of external components necessary
n Quiet fade-in/out mute function
n Power conserving standby-mode
n Non-Isolated 9-lead TO-220 package
Applications
n TVs
n Component stereo
n Compact stereo
Typical Application
Connection Diagram
SPiKeProtection and Overtureare trademarks of National Semiconductor Corporation.
DS100835-1
*Optional components dependent upon specific design requirements. Refer
to the External Components Description section for a component functional
description.
FIGURE 1. Typical Audio Amplifier Application Circuit
Plastic Package
DS100835-2
Top View
Order Number LM4701T
See NS Package Number TA9A
For Staggered Lead Non-Isolated Package
Only a 9-Pin Package
March 1998
© 1999 National Semiconductor Corporation
DS100835
www.national.com


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