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LM4733 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM4733
Description  3 Channel 30W Audio Power Amplifier with Mute
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4733 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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LM4733
3 Channel 30W Audio Power Amplifier with Mute
General Description
The LM4733 is a three channel audio amplifier capable of
typically delivering 30W per channel of continuous average
output power into a 4
Ω or 8Ω load with less than 10%
THD+N from 20Hz - 20kHz.
The LM4733 has short circuit protection and a thermal shut
down feature that is activated when the die temperature
exceeds 150˚C. The LM4733 also has an under voltage lock
out feature for click and pop free power on and off.
Each amplifier of the LM4733 has an independent smooth
transition fade-in/out mute.
The LM4733 has a wide operating supply range from ±10V
- ±32V allowing for lower cost unregulated power supplies to
be used.
The LM4733 amplifiers can easily be configured for bridge or
parallel operation for higher power and bi-amp solutions
Key Specifications
j Output Power/Channel at 10% THD+N,
1kHz into 4
Ω or 8Ω
30W (typ)
j THD+N at3x1W into 8
Ω, 1kHz
0.03% (typ)
j Mute Attenuation
110dB (typ)
j PSRR
85dB (typ)
j Slew Rate
9V/µs (typ)
Features
n
Low external component count
n
Quiet fade-in/out mute mode
n
Wide supply range: 20V - 64V
Applications
n
Audio amplifier for component stereo
n
Audio amplifier for compact stereo
n
Audio amplifier for self-powered speakers
n
Audio amplifier for high-end and HD TVs
Typical Application
200794B5
FIGURE 1. Typical Audio Amplifier Application Circuit
September 2003
© 2003 National Semiconductor Corporation
DS200794
www.national.com


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