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OKI electronic componets |
E2P0059-37-X2
This version: Jan. 1998
Previous version: May. 1997
¡IMAGE SENSOReS lectronic components OPA256C–1
OPA256C–1
Self-Scanning Line Sensor
GENERAL DESCRIPTION
The OPA256C-1 is a 256-bit, one-dimensional diode array comprised of PN junction photodetector
diodes and CCDs (charge coupled devices). By using a two-phase clock pulse, transfer pulse,
and reset pulse, the OPA256C-1 can measure incident light.
FEATURES
• CCD for high sensitivity
• CCD transfer efficiency greater than 99.995%
• Photodetector configured of PN junction photodetector diodes for good blue sensitivity and
good output uniformity.
• Photodiodes highly integrated with 13 µm pitch for high resolution
• High-speed scanning
• Low-voltage operation
• Internal output amplifier and compensating amplifier
APPLICATIONS
• Industrial control
• Pattern recognition
• Control devices
• Object detection
PIN CONFIGURATION
• Dimensions
(Unit: mm)
22.86±0.3
18 17 16 15 14 13 12 11 10
1 2 3 4 5 67 8 9
* 9.8±0.6
1st Bit
20.32±0.25
0.46
2.54
*
0.25
7.62
* : Indicates photodetector
location
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IMAGE SENSORS
OPA256C–1
• Pin Connection Block Diagram
CS OS 0D f2B f1B fT TP1 TP2 PG
18 17 16 15 14 13 12 11 10
BCCD analog shift register
Transfer gate
Photo-gate
1 2 Photodiodes F255 256
Photo-gate
Transfer gate
BCCD analog shift register
12
RD fR
3456
OG f2A f1A fT
789
TP3 TP4 VSS
SS
Symbol
Name
RD Reset transistor drain
fR Reset transistor gate clock
OG Output gate
f1A CCD register clock
f1B CCD register clock
f2A CCD register clock
f2B CCD register clock
fT Phototransfer gate clock
Symbol
Name
TP1 Test pin (electrical input gate)
TP2 Test pin (electrical input diode)
TP3 Test pin (electrical input gate)
TP4 Test pin (electrical input diode)
VSS Substrate bias
PG Photo-gate
OD Output transistor drain
OS Output transistor source (video output)
CS Compensating transistor source (noise output)
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