參數(shù)資料
型號: LM4834MS
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻控制
英文描述: 1.75W Audio Power Amplifier with DC Volume Control and Microphone Preamp
中文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28
封裝: SSOP-28
文件頁數(shù): 4/12頁
文件大小: 443K
代理商: LM4834MS
Typical Application
Truth Table for Logic Inputs
Mode
0
0
0
1
1
1
Mute
0
0
1
0
0
1
HP Sense
0
1
X
0
1
X
DC Vol. Control
Adjustable
Adjustable
_
Adjustable
Adjustable
_
Line/HP Left
Fixed Level
Fixed Level
Fixed Level
Vol. Changes
Vol. Changes
Muted
Line/HP Right
Fixed Level
Fixed Level
Fixed Level
Vol. Changes
Vol. Changes
Muted
Speaker Out
Vol. Changes
Muted
Muted
Vol. Changes
Muted
Muted
External Components Description
Figure 2
Components.
1.
Functional Description
C
i
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
high pass filter with R
i
at f
c
= 1/(2
π
R
i
C
i
). Refer to the section,
Proper Selection of External
Components
, for an explanation of how to determine the value of C
i
.
Supply bypass capacitor which provides power supply filtering. Refer to the
Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section,
Proper Selection of
External Components
, for information concerning proper placement and selection of C
B
.
2.
C
S
3.
C
B
DS100015-3
FIGURE 2. Typical Application Circuit
www.national.com
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相關PDF資料
PDF描述
LM4835 Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
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LM4836 Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4836MT Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
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