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參數(shù)資料
| 型號： | STV9211 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 運動控制電子 |
| 英文描述： | 12 ns TRIPLE-CHANNEL HIGH VOLTAGE VIDEO AMPLIFIER |
| 中文描述： | 12納秒三通道視頻放大器高壓 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大?。?/td> | 444K |
| 代理商： | STV9211 |
STV9553
15/24
10.5
Video response optimization: outputs networks
The output network (R10/L1/R11) is used to adjust the amplifier video performances. Once R10 and R11
resistors are set to protect the application against arcing (R10 + R11>300
), it is possible to increase the
bandwidth by increasing L1.
10.6
Video response optimization: inputs networks
The input network also plays an important role in the device dynamic behaviour. We recommend to use
the reference input network #1, which is described in Figure 17, but 2 other networks (#2 and #3) can be
used to better match the required performances and the video board layout. Refer to the application note
referenced AN1510 for the complete description of these input networks.
10.7
Video response optimization: layout and decoupling
The decoupling of V
CC
and V
DD
through good quality HF capacitors (respectively C10 and C12) close to
the device is necessary to improve the dynamic performance of the video signal.
Careful attention has to be given to the three output channels of the amplifier.
Capacitor
: The parasitic capacitive load on the amplifier outputs must be as small as possible.
Figure 9 from Section 8 clearly shows the deterioration of the t
R
/t
F
when the capacitive load
increases. Reducing this capacitive load is achieved by moving awaythe output tracks from the other
tracks (especially ground) and by using thin tracks (<0.5mm), see Figure 17.
Cross talk
: Output and input tracks must be set apart. The STV9553 pin-out allows the easy separa-
tion of input and output tracks on opposite sides of the amplifier (see Figure 21).
Length
: Connection between amplifier output and cathode must be as short and direct as possible.
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