參數(shù)資料
型號: LM4753T
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 11.8 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15
封裝: TO-220, 15 PIN
文件頁數(shù): 1/16頁
文件大?。?/td> 511K
代理商: LM4753T
LM4753
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
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
at 10% THD 10W
n Maximum operating voltage
28V
n Power output stage Noise floor
2 mV
n Line output Noise floor
55 V
n 0V–5V DC controlled volume attenuation
80 dB
n Mute attenuation
75 dB
n Standby-mode supply current
7 mA
Features
n Quiet fade-in/out mute function
n Stereo variable line-out pins
n AC output short circuit protection
n Thermal shutdown protection
Applications
n Stereo TVs
n Component stereo
n Compact stereo
Typical Application
DS100043-1
FIGURE 1. Typical Audio Amplifier Application Circuit
June 1999
LM4753
Dual
10W
Audio
Power
Amplifier
w/Mute,
Standby
and
V
olume
Control
1999 National Semiconductor Corporation
DS100043
www.national.com
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