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參數資料
型號: TS4984EKIJT
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA15
封裝: LEAD FREE, FCP-15
文件頁數: 17/29頁
文件大?。?/td> 1751K
代理商: TS4984EKIJT
Application Information
TS4984FC
24/29
The value of the input capacitor
CIN can be calculated with the following formula, using the -3dB
lower frequency required (where
FL is the lower frequency required):
Note:
This formula is true only if:
is 5 times lower than FL.
The following bill of materials is provided as an example of a differential amplifier with a gain of
2 and a -3dB lower cut-off frequency of about 80Hz.
Figure 67. Differential input amplifier configuration
Table 8.
Example of a bill of materials
Designator
Part Type
R1L = R1R
20k
/ 1%
R2L = R2R
20k
/ 1%
CinR = CinL
100nF
Cb=CS
1F
U1
TS4984
R1L
CinL
R2L
VCC
+ Cs
+ Cb
Neg. Input LEFT
8 Ohms
LEFT Speaker
8 Ohms
RIGHT Speaker
R1R
CinR
R2R
Neg. Input RIGHT
StandBy
Control
R1L
CinL
Pos. Input LEFT
R1R
CinR
Pos. Input RIGHT
R2L
R2R
Bias
StandBy
V
CC1
GN
D
1
BypassL
GN
D
2
V
CC2
VO-L
VO+L
VO-R
VO+R
IN-L
IN+L
IN+R
IN-R
+
-
+
-
+
-
AV = -1
+
-
AV = -1
BypassR
TS4984
)
F
(
F
R
2
1
C
L
1
IN
π
)
Hz
(
C
)
R
(
2
1
F
B
2
1
CB
+
π
=
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相關代理商/技術參數
參數描述
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