參數(shù)資料
型號(hào)： STV9556
廠商： 意法半導(dǎo)體
元件分類： 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)： 14/24頁(yè)
文件大小： 698K
代理商： STV9556
STV9556
14/24
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 10.7), the tracks (see Section 10.7), 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).
When used in kit with the STV921x preamplifier from ST, the preamplifier bandwidth register (BW, register
13) must be set to minimum (o dec) for an application with t
R
/t
F
>5.5ns.
Figure 17. Video response optimization for one channel - DC coupling application
C11
4.7
μ
F
R10
L1
R11
CRT
OUT
V
CC
S
STV9556
IN
110
110
0.33
μ
H
V
REF
C10(*)
100nF
-
+
R1(**)
51
C1
1.5nF
Reference
Input Network #1
OUT
C2
10pF
R1
82
L1
0.33
μ
H
Input Network #2
C2
10pF
R1
33
Input Network #3
IN
IN
C24
4.7
μ
F
V
DD
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.
See Application note AN1510 for complete description.
C2
15pF
Caution:
For Application with Tr/Tf>5.5ns, the PreAmplifier bandwidth register (BW, Register 13)
must be set to minimum value (0 dec)
(
*
): To be connected as close as possible to the device
(
**
): R1 must be not be higher than 100
(***): R19 must be mandatorily used
V
DD
GNDP
GNDS
GNDA
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