- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98204 > TDA9535 (STMICROELECTRONICS) 3 CHANNEL, VIDEO AMPLIFIER, PZIP11 PDF資料下載
參數(shù)資料
| 型號： | TDA9535 |
| 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)： | 14/15頁 |
| 文件大?。?/td> | 1749K |
| 代理商： | TDA9535 |
TDA9535
8/15
8 VIDEO RESPONSE OPTIMIZATION
The dynamic video response is optimized by care-
fully designing the supply decoupling of the video
board
(see
Section 8.1),
the
tracks
(see
Section 8.2), then by adjusting the input/output
component network (see Section 8.3).
For dynamic measurements such as rise/fall time
and bandwidth, a 8pF load is used (total load in-
cluding the parasitic capacitance of the PC board
and CRT Socket).
Figure 5. Video response optimization for one channel
8.1 Supply decoupling
The decoupling of VCC and VDD through good
quality HF capacitors (respectively C10 and C12)
close to the device is necessary to improve the dy-
namic performance of the video signal.
8.2 - Tracks
Careful attention has to be given to the three out-
put channels of the amplifier.
– Capacitor: The parasitic capacitive load on the
amplifier outputs must be as small as possible.
Figure 11 clearly shows the deterioration of
the tR/tF when the capacitive load increases.
Reducing this capacitive load is achieved
moving away the output tracks from the other
tracks (especially ground) and by using thin
tracks (<0.5mm), see Figure 13.
– Cross talk: Output and input tracks must be set
apart. We recommend to install input and out-
put tracks on opposite sides of the amplifier.
Once again, this is achievable by using thin
tracks (<0.5 mm) to pass through the pin of the
device, see Figure 13 (b).
– Length: Connection between amplifier output
and cathode must be as short and direct as
possible.
8.3 - Network adjustment
Video response is always a compromise between
several parameters. An improvement of the rise/
fall time leads to a deterioration of the overshoot.
The recommended way to optimize the video re-
sponse is:
1
To set R10+R11 for arcing protection (min.
300
)
2. To adjust R20 and R10+R11.
Increasing their value increases the
tR/tF values and decrease the overshoot
3. To adjust L1
Increasing L1 speeds up the device and
increases the overshoot.
We recommend our customers to use the sche-
matic shown on Figure 5 as a starting point for the
video board and then to apply the optimization
they need.
C24
4.7
F
C11
4.7
F
R10
L1
R11
CRT
R20
15/50
OUT
VCC
VDD
TDA9207
TDA9209
TDA9535/36
GND
IN
150
150
0.39
H
(*): To be connected as close as possible to the device
C10(*)
100nF
C12(*)
100nF
GNDS
VREF
-
+
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA9536 | 3 CHANNEL, VIDEO AMPLIFIER, PZIP11 |
| TDA9556 | 3 CHANNEL, VIDEO AMPLIFIER, PZIP11 |
| TDA9610H-T | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TDA9614H-T | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TDA9615H/A-T | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9536 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:7.5 NS TRIPLE HIGH VOLTAGE VIDEO AMPLIFIER |
| TDA9550 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV signal processor-Teletext decoder with embedded m-Controller |
| TDA9556 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:7.5 NS TRIPLE-CHANNEL HIGH VOLTAGE VIDEO AMPLIFIER |
| TDA955X | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV signal processor-Teletext decoder with embedded m-Controller |
| TDA955XN1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV signal processor-Teletext decoder with embedded m-Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。