參數(shù)資料
型號(hào)： STV9553
廠商： 意法半導(dǎo)體
元件分類： 運(yùn)動(dòng)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(yè)數(shù)： 16/24頁(yè)
文件大?。?/td> 444K
代理商： STV9553
STV9553
16/24
10.8
AC - Coupling mode
The STV9553 can be used in AC-Coupling mode in kit with the TDA9207/9212 preamplifier from ST. As
for theDC-coupling mode, the STV9553 drives perfectly the video signal in PICTURE BOOST conditions.
A typical schematic is given on the Figure 18 below.
Figure 18. Video response optimization for one channel - AC coupling application
The advantage of such an architecture is to use smaller V
DD
and therefore to have smaller power
consumption. This is due to the fact that the STV9553 provides only the video signal and not the cut-off
adjustment. The disadvantage is to have an application with more components (DC restore circuitry).
Note that it is mandatory to keep the output video signal (point C) inside the linear area of the amplifier
(from 17V to V
DD
- 15V).
C24
4.7
μ
F
C11
4.7
μ
F
R10
L1
R11
CRT
OUT
V
CC
V
DD
T
STV9553
IN
150
150
0.33
μ
H
V
REF
C10(*)
100nF
C12(*)
100nF
-
+
DC Restore
circuitry
Cut-off
V
restore
C1
1
μ
F
OUT
R19(***)
33-40
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
(****): Input Networks #2 and #3 can be used as well
C
V
DD
GNDP
GNDS
GNDA
R1(**)
51
C1
1.5nF
Reference
C2
10pF
InputNetwork #1 (****)
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