OPA256C1 [OKI]

Self-Scanning Line Sensor; 自扫描线传感器


型号：	OPA256C1
厂家：	OKI ELECTRONIC COMPONETS
描述：	Self-Scanning Line Sensor 自扫描线传感器传感器
文件：	总10页 (文件大小：183K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

E2P0059-37-X2

This version: Jan. 1998

Previous version: May. 1997

IMAGE SENSORS

OPA256C–1

¡ electronic components

OPA256C–1

Self-Scanning Line Sensor

GENERAL DESCRIPTION

TheOPA256C-1isa256-bit,one-dimensionaldiodearraycomprisedofPNjunctionphotodetector

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±±.ꢀ

18 17 16 15 14 1ꢀ 12 11 1±

ꢀ

9.8±±.6

1st Bit

±.46

2.54

±.25

7.62

2±.ꢀ2±±.25

* : Indicates photodetector

location

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OPA256C–1

• Pin Connection Block Diagram

±D

f2B

f1B

1ꢀ

TP₁

TP₂

1±

BCCD analog shift register

Transfer gate

Photo-gate

Photodiodes F255 256

Photo-gate

1 2

Transfer gate

BCCD analog shift register

ꢀ

f2A

f1A

TP_ꢀ

TP₄

V_SS

Symbol

Name

Symbol

TP₁

TP₂

TP_ꢀ

TP₄

V_SS

Name

Reset transistor drain

Reset transistor gate clock

Output gate

Test pin (electrical input gate)

Test pin (electrical input diode)

Test pin (electrical input gate)

Test pin (electrical input diode)

Substrate bias

CCD register clock

f1A

f1B

f2A CCD register clock

Photo-gate

CCD register clock

f2B

Output transistor drain

Phototransfer gate clock

Output transistor source (video output)

Compensating transistor source (noise output)

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OPA256C–1

ABSOLUTE MAXIMUM RATINGS

Test Condition

Min.

–4±

Max.

+125

+85

Unit

°C

Parameter

Symbol

Storage Temperature

stg

‚—

—

T_op

–2±

Operating Temperature

Clock Voltage

–±.ꢀ

+18

Ta=25°C

V_DD

+18

Applied Voltage

ELECTRICAL CHARACTERISTICS

(Ambient Temperature Ta=25°C)

Parameter

Reset Drain Voltage

Symbol

Min.

Typ.

Max.

12.6

5.25

–2.5

12.6

±.2

Unit

V_OD

V_RD

11.4

4.75

–1.5

11.4

–±.1

V_DD

Output Transistor Drain Voltage

Output Gate Voltage

V_OG

V_PG

V_SS

V_IS

Photo Gate Voltage

–2.±

Substrate Bias

Electrical Input Diode Voltage (TP_{2, 4}

)

V_IG

Electrical Input Gate Voltage (TP_{1, ꢀ}

)

1, 2

"H"

"L"

"H"

"L"

"H"

"L"

V_DD

±.4

V_DD

±.4

V_DD

±.4

—

8±

1±

V_DD

±.8

CCD register

Photo-transfer

Reset

1, 2

V_DD

±.8

VfTL

VfRH

VfRL

V_DD

±.8

f_V

±.1

—

MH_Z

Video Frequency

1, 2

—

CCD register

Photo-transfer

Cf_T

Cf_R

P_D

—

Reset

—

8±

—

Power Dissipation

Output Load Resistance

R_L

—

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OPA256C–1

POTOELECTRIC CHARACTERISTICS

(Ambient Temperature Ta=25°C)

Parameter

Symbol

R_W

Min.

—

Typ.

15±±

25±

—

Max.

—

Unit

Note

mV/Rx • sec

Sensitivity

Vsat

18±

—

Saturation Output Voltage

Output Uniformity <*±±7*> (Overall)

Output DC Level

±7

*ꢀ

Vdc

—

4.±

—

Dark Output Voltage

*1 2856K tungsten lamp

*2 V_RD, V_DD=12 V, V_SS=2.± V, R_L=1 kW

*ꢀ When it is 5± percent of the saturation output (2856K tungsten lamp.)

However, this excludes the 1st, 2nd, and 256th bits

*4 Storage time is assumed to be 1± ms.

PIXEL CONFIGURATION

(Ambient Temperature Ta=25°C)

Parameter

Arrangement

Symbol

Central Value

Accuracy

—-

Unit

—

Straight line

256

1ꢀ

—

Number of Pixels

Pixels Pitch

±2.±

Photodiode Width

Aperture Width

Sensor Length

±2.5

ꢀꢀ28

±ꢀ.±

* See output timing for information concerning dummy pixels.

Pixcel Configration Diagram

Light shield layer

(Al)

Photodiode D

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OPA256C–1

CLOCK INPUT TIMING CHARACTERISTICS

(Ambient Temperature Ta=25°C)

Parameter

Symbol

t_rf

Min.

—

Typ.

ꢀ±

2±

ꢀ±

2±

1±

Max.

1±±

Unit

Note

Rise time

t_ff

Fall time

t_Of1, 2

t_Bf1, 2

t_rfT

*ꢀ

Overlap time

Blank time

Rise time

—

t_ffT

Fall time

Phototransfer

t_Wfr

t_SfT

Transfer time duration

Setup time

Hold time

Rise time

1±

t_HfT

t_rfR

1±

—

8±

17±

ꢀ±

2±

—

1±±

2±±±

t_rfR

Fall time

Reset

t_WfR

t_SfR

t_HfR

Duration

Setup time

Hold time

OPA256C–1 Input Timing Diagrams

trf

f1^ABor f2

9±%

1±±%

f2^ABor f1

tff

fA2 or fB1

V_OG

fA1 or fB2

to f1, 2

Limited to periods during fA1 rise and fA2 fall, and fB2 rise and fB1 fall.

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OPA256C–1

*ꢀ

fA1 or fB2

fA2 or fB1

V_OG

t_Bf1, 2

Limited to periods during fA2 rise and fA1 fall, and fB1 rise and fB2 fall.

1±%

t_SfT

t_WfT

t_HfT

t_ffT

9±%

5±%

1±%

t_rfT

fA1 or fB2

9±%

1±%

9±%

1±%

fB2 or fA1

t_SfR

t_WfR

t_HfR

9±%

5±%

1±%

t_rfR

t_ffR

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Input Timing Chart

OPA256C–1

t_INT

t_S

t_T

t_H

D₁D₂D_ꢀ

Dummy output

DW dummy

S₂₅₆

S₂₅₅

S₁S₂

VIDEO OUTPUT TIMING CHARACTERISTICS

(Ambient Temperature Ta=25°C)

Guaranteed Values

Parameter

Symbol

Unit

Note

Min.

Typ.

Max.

Video Rise Delay Time

Video Rise Time

tdrv

trv

—

Video Fall Delay Time

Video Fall Time

tdfv

tfv

ꢀ±

V_DD=V_RD=Vf=12 V

R_L=1 kW

t_ff=ꢀ± ns

t_rf=ꢀ5 ns

t_rfR=15 ns

Conditions

V_DG=V_PG=5 V

V_SS=–2 V

C_L=ꢀ1 pF

Ta=25°C

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OPA256C–1

Output Timing Diagrams

tff=ꢀ± ns

trf=ꢀ5 ns

9±%

5±%

f1A.f2B

1±%

trf=R15 ns

9±%

5±%

1±%

tdrv

tdfv

1±%

9±%

Video

trv

tfv

TYPICAL CHARACTERISTICS

• Iluminance vs. Output Characteristics

1±±±

5±±

ffR=1 MHz

2±±

1±±

5±

R_L=1 kW

2856K tungsten lamp

Room temperature

2±

1±

V_RD=12 V

Vf1.2, fT, fR=12 V

_OG=5 V

V_PG=5 V

_SS=–2.± V

1± 2± 5± 1±±2±± 5±± 1±±±

Illuminance (Rx)

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OPA256C–1

• Spectral Sensitivity Characteristic

1.±

V_RD=12 V

V_OG=5 V

V_PG=5 V

±.5

V_SS=–2.± V

Vf_R=12 V

±.2

±.1

2±±

4±±

6±±

8±±

1±±±

12±±

Wavelength (nm)

• Dark vs. Temperature Characteristics

1±±±

5±±

2±±

1±±

=1 MHz

V_RD=12 V

5±

f1, 2, fR, fT=12 V

_OG=5 V

_PG=5 V

2±

1±

V_SS=–2 V

R_L=1 kW

1± 2± ꢀ± 4± 5± 6± 7± 8± 9± 1±±

Ambient Temperature Ta (°C)

• M.T.F. Characteristics (White Fluorescent Lamp)

Single pulse

(Black) input

Max.

Min.

8±

6±

4±

2±

White

Black

Continuous

input

Sensor bit

MTF=(Max.–Min.) / (Max.+Min.)

¥1±± (%)

ꢀ

1±

¥7.7(Line pair/mm)

1±±

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+15V

+5V

2±±

±.±1

6.8

±.±1

+5V

5.1K

6.8

1±±

6.8

1±±

6.8

±.±1

RD1ꢀ1ꢀ

RD78N

RD1ꢀBL

L_CO

I_D

I_B

I_A

6.8

±.±1

5.1K

L_CO

I_D

CL f

I_B

I_A

L_CO

I_D

I_B

I_A

CL f

L_CO

I_D

I_B

I_A

5.1K

+5V

TP2

TP4

CL f

+5V

2SCꢀ72

5.1K

1±±K

1±P

±.±1

1±±K

5.1K

L_CO

I_D

I_B

I_A

J K

f1A

f1B

Digit

GND

mPC159A

2±K

–

75±

–

+5V

f2A

f2B

1K ꢀ±±

22P

5±±

18K

+5V

2SC169

ꢀ±±P

2SCꢀ72

2.7K

+5V

A7ꢀꢀ

V_SS

–

1.8K

TP1.ꢀ

5.1K

L_CO

I_D

I_B

I_A

Analog

GND

1S2±75K

ꢀ±±

7416ꢀ

68±P

CL f

741±7

+5V

1.5K

5.1K

7412ꢀ

DS±±26CN

RD78N

5±±

74±4

RD1ꢀ8L

2±±

6.8

±.±1

6.8

–15V

OPA256C1 [OKI]

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