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参数资料
| 型号： | TC255 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, CDIP8 |
| 封装： | 2.54 MM PITCH, WINDOWED, CERAMIC, DIP-8 |
| 文件页数： | 15/18页 |
| 文件大小： | 242K |
| 代理商： | TC255 |
TC255
336-
× 244-PIXEL CCD IMAGE SENSOR
SOCS034C – FEBRUARY 1993 – REVISED NOVEMBER 1994
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
charge-detection node and output amplifier
The buffer amplifier converts charge into a video signal. Figure 4 shows the circuit diagram of the
charge-detection node and output amplifier. As charge is transferred into the detection node, the potential of
this node changes in proportion to the amount of signal received. This change is sensed by an MOS transistor
and, after proper buffering, the signal is supplied to the output terminal of the image sensor. After the potential
change is sensed, the node is reset to a reference voltage supplied by an on-chip reference generator. The reset
is accomplished by a reset gate that is connected internally to the serial register. The detection node and buffer
amplifier are located a short distance away from the edge of the storage area; therefore, two dummy cells are
used to span this distance.
Reference
Generator
Q0
Q1
Q2
Q3
Q5
Q6
VO
Q4
QR
SRG
Detection
Node
ADB
Figure 4. Output Amplifier and Charge-Detection Node
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