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參數(shù)資料
| 型號(hào)： | TDA8215B |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 偏轉(zhuǎn) |
| 英文描述： | HORIZ/VERT DEFLECTION IC, PDIP20 |
| 封裝： | DIP-20 |
| 文件頁(yè)數(shù)： | 13/15頁(yè) |
| 文件大小： | 144K |
| 代理商： | TDA8215B |
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TDA8215B
GENERAL DESCRIPTION
The TDA8215B performs all the video and power
functions required to provide signals for the line
driver and frame yoke.
It contains:
– A synchronization separator
– An integrated frame separator without external
components
– A saw-tooth generator for the frame
– A power amplifier for direct drive of frame yoke
(short circuit protected)
– An open collector output for the line darlington
drive
– A line phase detector and a voltage control
oscillator
– A super sandcastle generator
– Video identification output.
The slice level of sync-separation is fixed by value
of the external resistors R1 and R2. VR is an inter-
nally fixed voltage.
The sync-pulse allows the discharge of the capac-
itor by a 2 x I current. A line sync-pulse is not able
to discharge the capacitor under VZ/2. A frame
sync-pulse permits the complete discharge of the
capacitor, so during the frame sync-pulse Q3 and
Q4 provide current for the other parts of the circuit.
Figure 4. Synchronization Separator Circuit
Figure 5. Frame Separator
VR
R1
20
SL1
SL2
R2
Video
V
Z
V
Z/2
Q3
Q4
ST2
ST1
SL1
3l
l
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