參數(shù)資料
型號(hào): LM4866MTE
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 2.2W Stereo Audio Amplifier
中文描述: 3.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
封裝: 6.50 X 4.40 MM, 0.90 MM HEIGHT, EXPOSED PAD, TSSOP-20
文件頁(yè)數(shù): 9/21頁(yè)
文件大?。?/td> 644K
代理商: LM4866MTE
Typical Performance Characteristics
(Continued)
Channel Separation
Power Supply
Rejection Ratio
20018619
20018621
Open Loop
Frequency Response
Supply Current vs
Supply Voltage
20018622
20018623
External Components Description
(Refer to
Figure 1
.)
Components
1.
Functional Description
R
i
The Inverting input resistance, along with R
f
, set the closed-loop gain. R
i
, along with C
i
, form a high pass
filter with f
c
= 1/(2
π
R
i
C
i
).
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i
, along with R
i
, create a
highpass filter with f
c
= 1/(2
π
R
i
C
i
). Refer to the section,
SELECTING PROPER EXTERNAL
COMPONENTS
, for an explanation of determining the value of C
i
.
The feedback resistance, along with R
i
, set the closed-loop gain.
The supply bypass capacitor. Refer to the
POWER SUPPLY BYPASSING
section for information about
properly placing, and selecting the value of, this capacitor.
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.
2.
C
i
3.
4.
R
f
C
s
5.
C
B
L
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