參數(shù)資料
型號: LM4834MDC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, UUC
封裝: DIE
文件頁數(shù): 10/15頁
文件大小: 479K
代理商: LM4834MDC
Typical Application
Truth Table for Logic Inputs
Mode
Mute
HP Sense
DC Vol. Control
Line/HP Left
Line/HP Right
Speaker Out
0
Adjustable
Fixed Level
Vol. Changes
0
1
Adjustable
Fixed Level
Muted
0
1
X
_
Fixed Level
Muted
1
0
Adjustable
Vol. Changes
1
0
1
Adjustable
Vol. Changes
Muted
1
X
_
Muted
External Components Description Figure 2
Components.
Functional Description
1.
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 fc = 1/(2πRiCi). Refer to the section, Proper Selection of External
Components, for an explanation of how to determine the value of C
i.
2.
C
S
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.
3.
C
B
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.
4.
C
O
Output coupling capacitor which blocks the DC voltage at the amplifiers output. Forms a high pass filter
with R
L at fo = 1/(2πRLCO).
DS100015-3
FIGURE 2. Typical Application Circuit
LM4834
www.national.com
4
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