參數(shù)資料
型號: LM4890IBLX
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: GT 3C 3#16S SKT RECP WALL RM
中文描述: 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9
封裝: MICRO, SMD-9
文件頁數(shù): 6/31頁
文件大?。?/td> 1208K
代理商: LM4890IBLX
External Components Description
(
Figure 1
)
Components
1.
Functional Description
R
IN
Inverting input resistance which sets the closed-loop gain in conjunction with R
f
. This resistor also forms a
high pass filter with C
IN
at f
C
= 1/(2
π
R
IN
C
IN
).
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
IN
at f
c
= 1/(2
π
R
IN
C
IN
). Refer to the section,
Proper Selection of External
Components
, for an explanation of how to determine the value of C
IN
.
Feedback resistance which sets the closed-loop gain in conjunction with R
IN
.
Supply bypass capacitor which provides power supply filtering. Refer to the section,
Power Supply
Bypassing
, for information concerning proper placement and selection of the supply bypass capacitor,
C
BYPASS
.
C
BYPASS
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
BYPASS
.
2.
C
IN
3.
4.
R
f
C
S
5.
L
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