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TCD1708D
CCD LINEAR IMAGE SENSOR (high sensitive and low dark current 7450 elements)
TOSHIBA
TCD1708D
TOSHIBA CCD LINEAR IMAGE SENSOR CCD (Charge Coupled Device)
TCD1l708D
The TCD1708D is a high sensitive and low dark current
7450 elements CCD image sensor.
The sensor is designed for facsimile, imagescanner and
The device contains a row of 7450 elements photodiodes
which provide a 24 lines/mm (600DPI) across a A3 size
paper. The device is operated by 5V (pulse), and 5V
power supply.
FEATURES
0 Number of Image Sensing Elements : 7450 elements
0 Image Sensing Element Size
: 4.7 gm by 4.7 gm on 4.7pm
0 Photo Sensing Region :
cente rs
High sensitive and low voltage
dark signal pn photodiode
WDIP22-G-400-2.54D (C)
0 Clock : 2 phase (5 V)
MAXIMUM RATINGS (Note 1)
CHARACTERISTIC SYMBOL RATING UNIT
Clock Pulse Voltage Vp
Shift Pulse Voltage VSH -0 3--7
Reset Pulse Voltage VRS . V
Clamp Pulse Voltage ch
Power Supply Voltage VOD -0.3~7
Operating Temperature Topr 0~60 °C
Storage Temperature Tstg - 25~85 "C
(Note 1) : All voltage are with respect to SS terminals
(Ground).
Weight : 5.2g (Typ.)
PIN CONNECTIONS
OSI 1 1 22 052
OD 2 21 SS
NC 3 20 NC
CP 4 19 CP
RS 5 18 RS
ff2B 6 17 ff2B
SS 7 16 ss
9520 8 15 sb2E
ff1O 9 14 fb1E
NC 10 13 NC
NC 11 7450 12 SH
(TOP VIEW)
TOSHIBA TCD1708D
CIRCUIT DIAGRAM
CP RS 9523 SS ¢2E ff1E
®® 17 (ij), fish, (iw,
SS (ii)
SIGNAL
052 (ii)- OUTPUT CCD ANALOG SHIFT REGISTER 2
BUFFER
SHIFT GATE 2 12) SH
3:253 ......... nazrwm PHOTO ':ixt,'?i?tises,t ......... #3
aaa 'EEE"'"'"' DIODE 335,35 ES
SHIFT GATE 1
SIGNAL
OSI 1 I- OUTPUT CCD ANALOG SHIFT REGISTER 1
BUFFER
o o Ci', 6 Ci) c.» 'dy
OD CP RS ¢ZB SS ff20 ff1O
PIN NAME
¢1E,O Clock (Phase 1)
¢2E,O Clock (Phase 2)
42i? Final Stage Clock (Phase 2)
SH Shift Gate
RS Reset Gate
CP Clamp Gate
OSI Signal Output 1
OS2 Signal Output 2
OD Power
SS Ground
NC Non Connection
2 2001-10-15
TOSHIBA TCD1708D
OPTICAL/ ELECTRICAL CHARACTERISTICS
(Ta = 25°C, VOD = 5V, V/ = VSH = VRS = ch = 5V (PULSE), " = 1MHz,
tINT (INTEGRATION TIME) = 10 ms, LIGHT SOURCE = DAYLIGHT FLUORESCENT LAMP,
LOAD RESISTANCE = 100 k0)
CHARACTERISTIC SYMBOL MIN. TYP. MAX. UNIT NOTE
Sensitivity R 12 15 18 V / be;
Photo Response Non Uniformity PRNU - 4 10 % (Note 2)
PRNU (3) - 6 12 mV (Note 8)
Saturation Output Voltage VSAT 1.0 1.3 - V (Note 3)
Saturation Exposure SE 0.05 0.08 - be; (Note 4)
Dark Signal Voltage VDRK - 0.5 3 mV (Note 5)
Dark Signal Non Uniformity DSNU - 0.5 10 mV (Note 5)
DC Power Dissipation PD - 80 160 mW
Total Transfer Efficiency TTE 92 98 - %
Output Impedance Zo - 0.2 1 k0
Dynamic Range DR - 2600 - - (Note 6)
. V051 2.0 2.5 3.5
DC Signal Output Voltage V052 2.0 2.5 3.5 V (Note 7)
DC Differential Error Voltage luosvuos2l - - 300 mV
Random Noise NDa - 1.0 - mV (Note 9)
(Note 2) : Measured at 50% of SE (Typ.)
Definition of PRNU:PRNU = 2% x100(%)
Where 3 is average of total signal outputs and AX is maximum deviation from?
under uniform illumination. (Channel 1)
In the case of 3725 elements (Channel 2), the condition is the same as above too.
(Note 3) : VSAT is defined as minimum saturation output voltage of all effective pixels.
(Note 4) : Definition of SE : SE = (Ixs)
3 2001-10-15
TOSHIBA TCD1708D
(Note 5) , VDRK is defined as average dark signal voltage of all effective pixels.
DSNU is defined as different voltage between VDRK and VMDK when VMDK is
maximum dark signal voltage.
_ "DSNU
VDRK is proportional to tINT (Integration Time).
So the shorter tINT condition makes wider DR values.
(Note 6) : Definition of DR : DR =
(Note 7) : DC signal output voltage and DC compensation output voltage are defined as
follows:
(Note 8) : PRNU (3) is defined as maximum voltage with next pixel, where measured 5% of
SE(Typ.)
4 2001-10-15
TOSHIBA TCD1708D
(Note 9) : Random noise is defined as the standard deviation (sigma) of the output level
difference between two adjacent effective pixels under no illumination (i.e. dark
condition) calculated by the following procedure.
VIDEO OUTPUT VIDEO OUTPU
OUTPUT WAVEFORM
(EFFECTIVE PIXELS 200 ns 200 ns
UNDER DARK CONDITION) ----------_
PIXEL n PIXEL n + l
1) Two adjacent pixels (pixel n and n + 1) in one reading are fixed as
measurement points.
2) Each of the output levels at video output periods averaged over 200
nanosecond period to get Vn and Vn + l.
3) Vn + 1 is subtracted from Vn to get AV.
AV=Vn-Vn+1
4) The standard deviation of AV is calculated after procedure 2) and 3) are
repeated 30 times (30 readings).
A-it, 130 . = I 2 nvi -W)2
AV'EiEHAVlI a 30i=1(l il )
5) Procedure 2), 3) and 4) are repeated 10 times to get 10 sigma values.
Tr.-.. = 2 aj
6) Tsvalue calculated using the above procedure is observed v5times larger than
that measured relative to the ground level. So we specify the random noise as
follows.
Random noise =
5 2001-10-15
TOSHIBA TCD1708D
OPERATING CONDITION
CHARACTERISTIC SYMBOL MIN. TYP. MAX. UNIT
"H" Level I/PIE, O 4.75 5 5.25
Clock Pulse Voltage "L" Level V¢2E, O 0 - 0.3 V
. "H" Level 4.75 5 5.25
Final Stage Clock Voltage "L" Level 1/p2B 0 - 0.3 V
. H Level I/PO, E H Vii), E"H" I/PO, E"H"
Shift Pulse Voltage (Note 10) " " VSH - 0.25 V
L Level
0 - 0.3
"H" Level 4.75 5 5.25
Reset Pulse Voltage "L" Level VRS 0 - 0.3 V
CI P I V It "H" Level V 4.75 5 5.25 V
amp use o age "L" Level CP 0 - 0.3
Power Supply Voltage VOD 4.75 5 5.25 V
(Note 10) : V/O, E "H" means the high level voltage of V¢0 and I/PE when SH pulse is high
level.
CLOCK CHARACTERISTICS (Ta = 25°C)
CHARACTERISTIC SYMBOL MIN. TYP. MAX. UNIT
Clock Pulse Frequency fp - 1 15 MHz
Reset Pulse Frequency fRS - 1 15 MHz
. CPE - 300 -
Clock Capacitance (Note 11) CPO - 300 - pF
Final Stage Clock Capacitance tVi? - 10 - pF
Shift Gate Capacitance CSH - 300 - pF
Reset Gate Capacitance CRS - 10 - pF
Clamp Gate Capacitance CCP - 10 - pF
(Note11) : VOD = 5V
6 2001-10-15
TCD1708D
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TOSHIBA
TCD1708D
TIMING REQUIREMENTS
SH, 951 Timing
SH, RS, CP Timing
-,/Ts,
RS, CP period
(Note 12)
Al, RS, CP, os Timing
t8 t9 t10
¢1, Al CROSS POINT
t12 t13 t14
N 1.5V (MIN.)\ 1.5V(M|N.)
(Note 12) : Each RS and CP pins put to Low level during this period.
TOSHIBA TCD1708D
CHARACTERISTIC SYMBOL MIN. (N338) MAX. UNIT
Pulse Timing of SH and ¢1E, ¢1O t1, t5 200 500 - ns
SH Pulse Rise Time, Fall Time t2, t4 0 50 - ns
SH Pulse Width t3 1000 1500 5000 ns
sb2B Pulse Rise Time, Fall Time t6, t7 0 20 - ns
RS Pulse Rise Time, Fall Time t8, t10 0 20 - ns
RS Pulse Width t9 10 100 - ns
Video Data Delay Time (Note 14) t11 - 20 - ns
CP Pulse Rise Time, Fall Time t12, t14 0 20 - ns
CP Pulse Width t13 10 200 - ns
Pulse Timing of 9928 and CP t15 0 50 - ns
. . t16 0 0 -
Pulse Timing of RS and CP tl? 10 100 - ns
Pulse Timing of SH and CP t18 200 - - ns
Pulse Timing of SH and RS t19 200 - - ns
(Note 13) : TYP. is the case of fRS = 1.0 MHz
(Note 14) .' TLoad Resistance is 100 k0
9 2001-10-15
TOSHIBA TCD1708D
CAUTION
1. Window Glass
The dust and stain on the glass window of the package degrade optical performance of CCD
sensor.
Keep the glass window clean by saturating a cotton swab in alcohol and lightly wiping the surface,
and allow the glass to dry, by blowing with filtered dry N2.
Care should be taken to avoid mechanical or thermal shock because the glass window is easily to
damage.
2. Electrostatic Breakdown
Store in shorting clip or in conductive foam to avoid electrostatic breakdown.
CCD Image Sensor is protected against static electricity, but interior puncture mode device due to
static electricity is sometimes detected. In handing the device, it is necessary to execute the
following static electricity preventive measures, in order to prevent the trouble rate increase of the
manufacturing system due to static electricity.
a. Prevent the generation of static electricity due to friction by making the work with bare hands
or by putting on cotton gloves and non-charging working clothes.
b. Discharge the static electricity by providing earth plate or earth wire on the floor, door or stand
of the work room.
c. Ground the tools such as soldering iron, radio cutting pliers of or pincer.
It is not necessarily required to execute all precaution items for static electricity.
It is all right to mitigate the precautions by confirming that the trouble rate within the
prescribed range.
3. Incident Light
CCD sensor is sensitive to infrared light.
Note that infrared light component degrades resolution and PRNU of CCD sensor.
4. Lead Frame Forming
Since this package is not strong against mechanical stress, you should not reform the lead frame.
We recommend to use a IC-inserter when you assemble to PCB.
5. Soldering
Soldering by the solder flow method cannot be guaranteed because this method may have
deleterious effects on prevention of window glass soiling and heat resistance.
Using a soldering iron, complete soldering within ten seconds for lead temperatures of up to
260°C, or within three seconds for lead temperatures of up to 350°C.
10 2001-10-15
TOSHIBA TCD1708D
PACKAGE DIMENSIONS
WDIP22-G-400-2.54D(C) Unit in mm
(Note 1)
11.5h0.8 35f4.7pmx7450) (Note 3)
22 12 s.iy1'?
" -" - f 2 ‘18.
tro. ca' +l
a 2 i. ,
, 1.7:t: (Note 2)
3.22 i0.5
4.19 i0.5
ll 0.4i0.15
(Note 1) : No.1 SENSOR ELEMENT (S1) TO EDGE OF PACKAGE. _
(Note 2) : TOP OF CHIP TO BOTTOM OF PACKAGE.
(Note 3) : GLASS THICKNES (n = 1.5)
Weight : 5.2g (Typ.)
11 2001-10-15
TOSHIBA TCD1708D
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA is continually working to improve the quality and reliability of its products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent
electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer,
when utilizing TOSHIBA products, to comply with the standards of safety in making a safe
design for the entire system, and to avoid situations in which a malfunction or failure of such
TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please
keep in mind the precautions and conditions set forth in the "Handling Guide for
Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
OThe TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor
warranted for usage in equipment that requires extraordinarily high quality and/or reliability or
a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended
Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA
products listed in this document shall be made at the customer's own risk.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe information contained herein is presented only as a guide for the applications of our
products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of
intellectual property or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any intellectual property or other rights of
TOSHIBA CORPORATION or others.
0 The information contained herein is subject to change without notice.
12 2001-10-15
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