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參數(shù)資料
| 型號(hào)： | TH7887AVRH |
| 廠商： | E2V TECHNOLOGIES PLC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, HMA48 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 225K |
| 代理商： | TH7887AVRH |
12
TH7887A
2146A–IMAGE–05/02
Exposure Time
Reduction
The TH7887A allows exposure time control (electronic shutter function).
The exposure time reduction is achieved by pulsing all the
Φ Pi gates to 0V to continu-
ously remove all photogenerated electrons through antiblooming drain VA.
Figure 12. Timing Diagram for Electronic Shutter
Transfer
Obturation
Integration
Image period
1 s
Fall times and rise times: see figures 7 & 8
Φ P1
Φ A
Φ P2
Φ P3
Φ P4
Table 2. Drive Clock Characteristics
Parameter
Symbol
Value
Unit
Remarks
Min
Typ
Max
Image zone clocks
High level
Low level
ΦP1,2,3,4
8.5
0
9
0.5
9.5
0.8
V
Typical input capacitance
15 nF
See Figure 13
Memory zone clocks
High level
Low level
ΦM1,2,3, 4
8.5
0
9
0.5
9.5
0.8
V
Typical input capacitance
15.5 nF
See Figure 13
Memory to register clocks
High level
Low level
ΦM
8.5
0
9
0.5
9.5
0.8
V
Typical input capacitance
10 nF
Antiblooming gate
High level (integration)
Low level (transfer)
ΦA(chǔ)
5.5
0
5.5
0.5
5.5
0.8
V
Typical input capacitance
14 nF
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