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E2P0060-37-X2 IMAGE SENSORS
This version: Jan. 1998 Previous version: May. 1997 OPA2048CA
electronic components OPA2048CA
Self-Scanning Line Sensor
GENERAL DESCRIPTION
The OPA2048CA is a 2,048-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 OPA2048CA can measure incident light.
FEATURES
* * * * * * * * Dynamic range: TYP 500 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 m pitch for high resolution High-speed scanning Low-voltage operation Internal output amplifier and compensating amplifier
APPLICATIONS
* Facsimiles * OCRs * Industrial control * Monitoring devices * Object recognition * Measurement devices
PIN CONFIGURATION
* Dimensions
,
40.60.35 6.990.5 1st bit 0.51 25.4 2.54
(Unit: mm)
4.950.4
9.90.3
1.250.2
Cover Glass
0.51min.
2.80.3 4.0min.
0.25 10.16
1/10
IMAGE SENSORS * Pin Connection Block Diagram
CS 22 OD 21 OS 20 NC 19 NC 18 f2B 17 f1B 16 fT 15 TP1 14 TP2 13 PG 12
OPA2048CA
BCCD analog shift register
Compensating preamplifier
Preamplifier
Output gate
Transfer gate D 1 2 Photodiode
2047 2048
D
Transfer gate BCCD analog shift register
1 RD
2 fR
3 OG
4 NC
5 NC
6 f2A
7 f1A
8 fT
9 TP3
10 TP4
11 Vss
Symbol RD fR OG f1A f1B f2A f2B fT
Name Reset transistor drain Reset transistor gate clock Output gate CCD register clock CCD register clock CCD register clock CCD register clock Phototransfer gate clock
Symbol VSS TP1 TP2 TP3 TP4 PG OD OS CS Substrate bias
Name Test pin (electrical input gate) Test pin (electrical input diode) Test pin (electrical input gate) Test pin (electrical input diode) Photogate Output transistor drain Output transistor source (video output) Compensating transistor source (noise output)
2/10
IMAGE SENSORS
OPA2048CA
ABSOLUTE MAXIMUM RATINGS
Parameter Storage Temperature Operating Temperature Clock Voltage Applied Voltage Symbol Tstg Topr Vf VDD Test Condition -- -- Ta=25C Min. -40 -20 -0.3 -0.3 Max. +125 +85 +18 +18 Unit C C V V
ELECTRICAL AND OPTICAL CHARACTERISTICS
Parameter Reset Drain Voltage Output Transistor Drain Voltage Output Gate Voltage Photo Gate Voltage Substrate Bias Electrical Input Diode Voltage (TP2, 4) Electrical Input Gate Voltage (TP1, 3) Spectral Sensitivity Range Reset Clock Pulse Frequency (Video Frequency)
Clock Pulse Voltage
(Ambient Temperature Ta=25C) Guaranteed Value Min. 11.4 11.4 4.75 4.75 -1.5 11.4 -0.1 400 0.25 7 -0.3 7 -0.3 7 -0.3 300 10 2 0.9 -- 50 Typ. 12 12 5 5 -2 12 0 -- 1 VDD 0.4 VDD 0.4 VDD 0.4 400 25 4 1 4.0 70 Max. 12.6 12.6 5.25 5.25 -2.5 12.6 0.2 1000 *1 3 VDD 0.8 VDD 0.8 VDD 0.8 520 50 8 1.5 8.5 100 Unit V V V V V V V nm MHz V V V V V V pF pF pF kW V mW
Symbol VDD VOG VPG VSS VIS VIG lR ffR(fv) "H" "L" "H" "L" "H" "L" Vf H Vf L VfTH VfTL VfRH VfRL Cf
AB 1, 2 AB 1, 2 AB 1, 2
VRD VOD
CCD register Phototransfer Reset CCD register Phototransfer Reset
Clock Input Capacitance
CfT CfR RL Vdc PD
Load Resistance Output DC Level Power Consumption *2 *1 When load capacitance CL=31 pF *2 When load resistance RL=1 kW
3/10
IMAGE SENSORS
OPA2048CA
POTOELECTRIC CHARACTERISTICS
Parameter Saturation Exposure Saturation Output Voltage Sensitivity Output Nonuniformity Dark Output Voltage Dynamic Range VRD=VOD=Vf=12 V Test Conditions Conditions *1 2856 K tungsten lamp *2 Daylight fluorescent lamp VPC=VOG=5 V VSS= -2 V Symbol Esat Vsat RW UF Vd DR Min. -- 180 -- -- -- -- TP2.4=12 V TP1.3=0 V RL=1 kW Typ. 0.23 250 1.1 -- 0.5 500 fV=1 MHz TINT=10 ms Max. -- -- -- 10 3.1 --
(Ambient Temperature Ta=25C) Unit R * sec x mV V/R * sec x % mV -- Note *1 *2 *1 *3 *4 *2, *4
*3 Daylight fluorescent lamp 50% saturation exposure *4 Dark state (Ambient Temperature Ta=25C) Symbol -- -- P D L Central Value Straight line 2048 13 8 13 Accuracy -- -- 2.0 2.0 2.5 5.0 Unit -- -- mm mm mm mm
PIXEL CONFIGURATION
Parameter Arrangement Number of Pixels Pixel Pitch Photo Diode Width Aperture Width Sensor Length
* See "Output Timing" for information concerning dummy pixels.
Pixcel Configuration Diagram
W
,,
W
QQ ,, QQ ,, QQ ,, QQ ,, QQQ ,,, QQ ,, QQ Q ,, , Q ,
D P
26624
Light shield layer (Al)
Photodiode D
QQ QQ ,, ,, Q ,
L
4/10
IMAGE SENSORS
OPA2048CA
CLOCK INPUT TIMING CHARACTERISTICS
Parameter Rise time Register Fall time Overlap time Blank time Rise time Fall time Phototransfer Transfer time duration Setup time Hold time Rise time Fall time Reset Duration Setup time Hold time Symbol trf tff tOf1, 2 tBf1, 2 trfT tffT tWfr tSfT tHfT trfR tffR tWfR tSfR tHfR Min. -- -- 0 -- -- -- 5 0 0 -- -- 80 170 0 Typ. 30 20 20 20 30 20 10 1 1 -- -- -- -- --
(Ambient Temperature Ta=25C) Max. 100 100 100 100 100 100 15 10 10 100 100 2000 2000 2000 Unit ns ns ns ns ns ns ms ms ms ns ns ns ns ns *5 *4 Note *1 *2 *3
OPA2048CA Input Timing Diagrams
*1 trf f1A, 1B or f2A, 2B 90%
f2A, 2B or f1A, 1B tff
10%
*2 fA2 or fB1 1 V 2 OG fA1 or fB2
to f1, 2 Limited to periods during fA1 rise and fA2 fall, and fB2 rise and fB1 fall.
5/10
IMAGE SENSORS
*3 fA1 or fB2 1 V 2 OG fA2 or fB1
OPA2048CA
tBf1, 2
Limited to periods during fA2 rise and fA1 fall, and fB1 rise and fB2 fall.
*4
f1A, 1B
10% tSfT tWfT tHfT 90% 50%
fT trfT tffT
10%
*5 fA1 or fB2 90% 10% 90% fB2 or fA1 10% tSfR tWfR tHfR 90% 50% 10% trfR tffR
fR
6/10
IMAGE SENSORS
OPA2048CA
VIDEO OUTPUT TIMING CHARACTERISTICS
Parameter Video Rise Delay Time Video Rise Time Video Fall Delay Time Video Fall Time VDD=VRD=Vf=12 V Conditions VDG=VPG=5 V VSS=-2 V Symbol tdrv trv tdfv tfv RL=1 kW CL=31 pF Ta=25C Gvaranteed Values Min. -- -- -- -- Typ. 55 55 15 30 tff=30 ns trf=35 ns trfR=15 ns Max. -- -- -- --
(Ambient Temperature Ta=25C) Unit ns ns ns ns Note -- -- -- --
Input Timing Chart
fT f1A,1B f2A,2B fR CS OS
tS tH
Dummy sensor
S1 S2 S3 S4
Dummy Sensor Dummy Output
S 2047 2046 2048
2Bit (W) 16Bit (B)
Output Timing Diagrams
tff=30 ns
Dummy sensor
D1 D2 D3
2 Bit (W)
trf=35 ns 90% 50% 10% trf=15 ns 90% 50% 10% tdfv 10% 90%
f1A, f2B
fR tdrv Video
trv
tfv
7/10
IMAGE SENSORS
OPA2048CA
TYPICAL CHARACTERISTICS
* Photoelectric Conversion Characteristic
1000 500 Output Voltage (mV) 200 100 50 20 10 5 2 1 0.1 0.2 Tint=5 ms ffR=1 MHz RL=1 kW 2856K tungsten lamp Room temperature VRD=12 V f1.2, fT, fR=12 V VOC=5 V VPG=5 V VSS= -2 V 50 100
0.5 1 2
5
10 20
Illuminance ( x) R
* Dark Output Voltage vs. Temperature Characteristic
100 50
Dark Output Voltage (mV)
20 10 5 2 1.0 0.5 0.2 0.1 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature Ta (C)
ffR=1 MHz VRD=12 V f1.2, fT, fR=12 V VOG=5 V VPG=5 V VSS= -2 V RL=1 kW Tint=10 ms Vsat=260 mV
8/10
IMAGE SENSORS * Spectral Sensitivity Characteristic
OPA2048CA
1.0
Relative Output
0.5
0.2 0.1
200 300 400 500 600 700 800 900 1000 1100 1200
VRD=12 V VOG=5 V VPG=5 V VSS=5 V Vf1.2, fT, fR=12 V
Wavelength l (nm)
* M.T.F. Characteristics (White Fluorescent Lamp)
100 80 Single pulse (Black) input 1
M.T.F(%)
60 40 20 10 1
Continuous input
2
3
,
Relaitive Output
Max. Min. 0
Black White Black White Black
Sensor bit MTF=(Max.-Min.)/(Max.+Min.) 100(%)
5
10 100 7.7(Line pair/mm)
9/10
+15V 200W 200W 200W 200W 0.01 + 0.01 - 0.01 10K RD13BL
0.01
+ 500W 200W + 0.01 - - RD7BN 6.8 RD13BL 6.8
6.8 + 6.8 - 5K RD13BL 7K 5K 6.8 0.01 +
-
0.01
+5
DRIVE CIRCUIT
IMAGE SENSORS
+5
+
0.01
6.8
-
S fT RD OD 2SC372 CS fIB 750 +
300W
T PR q L OC
JKe fQ
t
PG
R
Q
fo
fCO A H C D 163
5K 10 - 0.01 5.1K
107
2K f1A 500 1K r f2A OS 1K 2SC372 1K 300W fR + 10 - mA733HC
300p
5.1K mPC159A 100K + -
100K 10p
C CR w 1B
J K
R
1A f2B
Q
Vout 1.8K 20W 22p 5.1K 2SC169 2.7K
Q 123
f
Q 107
1.8K
VSS
OPA2048CA 75K6
1S20
2K
680p
2kW DS0026CN 5kW RD7BN 0.01 - 6.8 + 500W
RD13BL
- 6.8 +
0.01
200W
-15V
-
6.8
0.01
OPA2048CA
+
10/10

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