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LM4753 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM4753
Description  Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Control
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com

LM4753 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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Dual 10W Audio Power Amplifier w/Mute, Standby and
Volume Control
General Description
The LM4753 is a stereo audio amplifier capable of delivering
10W/channel at 10% distortion into a 8
Ω load. The power
amp has an internally set gain of 30 dB. A 0V–5V DC con-
trolled volume block provides 80 dB of attenuation from input
to line-out. Line outputs are available after the volume con-
trol for signal routing.
The amplifier has a smooth transition fade-in/out mute and a
power conserving standby function which are controlled
through TTL or CMOS logic. Both functions provide over
75 dB of attenuation.
The LM4753 maintains an excellent Signal-to-Noise ratio of
greater than 70 dB with a low noise floor less than 2 mV. The
IC also maintains above 50 dB of channel separation.
The LM4753 is available in a 15-lead non-isolated plastic
package and is designed for use in TV applications requiring
single supply operation.
Key Specifications
n Output power into 8
Ω at 10% THD 10W
n Maximum operating voltage
n Power output stage Noise floor
2 mV
n Line output Noise floor
55 µV
n 0V–5V DC controlled volume attenuation
80 dB
n Mute attenuation
75 dB
n Standby-mode supply current
7 mA
n Quiet fade-in/out mute function
n Stereo variable line-out pins
n AC output short circuit protection
n Thermal shutdown protection
n Stereo TVs
n Component stereo
n Compact stereo
Typical Application
FIGURE 1. Typical Audio Amplifier Application Circuit
June 1999
© 1999 National Semiconductor Corporation

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