參數(shù)資料
型號: LM4873MDC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 1.1 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC
封裝: DIE
文件頁數(shù): 4/29頁
文件大?。?/td> 1019K
代理商: LM4873MDC
Typical Performance Characteristics (Continued)
Channel Separation
Power Supply
Rejection Ratio
10099320
10099321
Open Loop
Frequency Response
Supply Current vs
Supply Voltage
10099322
10099323
External Components Description
(Refer to Figure 1.)
Components
Functional Description
1.
R
i
The inverting input resistance, along with R
f, set the closed-loop gain. Ri, along with Ci, form a high pass
filter with f
c = 1/(2
πR
iCi).
2.
C
i
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i, along with Ri, create a
highpass filter with f
c = 1/(2
πR
iCi). Refer to the section, SELECTING PROPER EXTERNAL
COMPONENTS, for an explanation of determining the value of C
i.
3.
R
f
The feedback resistance, along with R
i, set the closed-loop gain.
4.
C
s
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about
properly placing, and selecting the value of, this capacitor.
5.
C
B
The capacitor, C
B, filters the half-supply voltage present on the BYPASS pin. Refer to the SELECTING
PROPER EXTERNAL COMPONENTS section for information concerning proper placement and selecting
C
B’s value.
LM4873
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