參數(shù)資料
型號(hào)： STV9556
廠商： 意法半導(dǎo)體
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： 7.5 NS TRIPLE-CHANNEL HIGH VOLTAGE VIDEO AMPLIFIER
中文描述： 7.5納秒三通道視頻放大器高壓
文件頁(yè)數(shù)： 15/24頁(yè)
文件大?。?/td> 698K
代理商： STV9556
STV9556
15/24
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 away the output tracks from the other
tracks (especially ground) and by using thin tracks (<0.5mm), see
Figure 17
.
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>200
), 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.
Cross talk
: Output and input tracks must be set apart. The STV9556 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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