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參數(shù)資料
| 型號： | TDA9556 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PZIP11 |
| 封裝： | PLASTIC, CLIPWATT-11 |
| 文件頁數(shù)： | 6/22頁 |
| 文件大小： | 315K |
| 代理商： | TDA9556 |
TDA9556
14/22
10.4
Video response optimization: schematics in DC-coupling mode
The dynamic video response is optimized by carefully designing the supply decoupling of the video board
(see Section 10.6), the tracks (see Section 10.6), then by adjusting the input/output component network
(see Section 10.5).
For dynamic measurements such as rise/fall time and bandwidth, a 8pF load is used (total load including
the parasitic capacitance of the PC board and CRT Socket).
Figure 17. Video response optimization for one channel - DC coupling application
C11
4.7
F
R10
L1
R11
CRT
OUT
VCC
TDA9210
TDA9556
IN
110
110
0.33
H
VREF
GNDP
GNDS
GNDA
C10(*)
100nF
-
+
R1
51
C1
1.5nF
Reference
OUT
C2
10pF
R1
82
L1
0.33
H
Input Network #2
C2
10pF
R1
33
Input Network #3
IN
C24
4.7
F
VDD
C12(*)
100nF
R19(**)
33-40
2 other Input Networks (Network #2 and #3 below) can be used in replacement of the reference Input Network #1.
C2
15pF
(*): To be connected as close as possible to the device
(**): R19 must be mandatorily used
See Application note AN1445 for complete description.
Input Network #1
VDD
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