TOSHIBA TCD2905D

TCD2905D
TOSHIBA CCD Image Sensor CCD (charge coupled device)
TCD2905D
The TCD2905D is a high sensitive and low dark current 5400
elements × 6 line CCD color image sensor which includes CCD
drive circuit and clamp circuit. The sensor is designed for
scanner.
The device contains a row of 5400 elements × 6 line staggered
photodiodes which provide a 48 lines/mm (1200 dpi) across a A4
size paper. The device is operated by 5 V pulse and
12 V power supply.
Features
Weight: 4.5 g (typ.)
·
Number of Image Sensing Elements: 5400 elements × 6 line
·
Image Sensing Element Size: 5.25 µm by 5.25 µm on 5.25 µm
·
Photo Sensing Region: High sensitive and low dark current PN photodiode
·
Distanced Between Photodiode Array: 63 µm (12 lines)
·
Clock: 2 phase (5 V)
·
Power Supply:12 V Power Supply Voltage
·
Internal Circuit: Clamp Circuit
·
Package: 22 pin CERDIP Package
·
Color Filter: Red, Green, Blue
Pin Connections (top view)
1
SS
2
21
OS1
RS
3
20
OD
CP
4
19
SW
NC
5
18
NC
NC
6
17
NC
NC
7
16
NC
f2A2
8
15
f2A1
f1A2
9
14
f1A1
13
SH1
12
SH2
VSH
Reset pulse voltage
V RS
Clamp pulse voltage
V CP
Switch pulse voltage
V SW
Power supply voltage
VOD
-0.3~15
V
Operating temperature
Topr
0~60
°C
SH3 10
Storage temperature
Tstg
-25~85
°C
SS 11
-0.3~8.0
V
B
Shift pulse voltage
10800
VBA
10800
Clock pulse voltage
G
Unit
R
Rating
10800
Symbol
1
OS2
1
22
1
Maximum Ratings (Note1)
Characteristic
OS3
Note 1: All voltage are with respect to SS terminals (ground).
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2002-04-03
TCD2905D
Block Diagram
OD
SW
f2A1
f1A1
20
19
15
14
CCD ANALOG SHIFT REGISTER 1
13 SH1
PHOTO
… DIODE (B) …
(even line)
…
…
D74
D76
PHOTO
… DIODE (B) …
(odd line)
D73
D75
S10796
S10797
S10798
S10799
S10800
D64
D65
D66
……
D59
D61
D63
S2
S4
CLAMP
D13
D15
D17
OS1 21
……
D60
D62
S1
S3
S5
D14
D16
D18
SHIFT GATE 1
SHIFT GATE 2
CCD ANALOG SHIFT REGISTER 2
CCD ANALOG SHIFT REGISTER 3
12 SH2
PHOTO
… DIODE (G) …
(even line)
…
…
D74
D76
PHOTO
… DIODE (G) …
(odd line)
D73
D75
S10796
S10797
S10798
S10799
S10800
D46
D65
D66
……
D59
D61
D63
S2
S4
CLAMP
D13
D15
D17
OS2 22
……
D60
D62
S1
S3
S5
D14
D16
D18
SHIFT GATE 3
SHIFT GATE 4
CCD ANALOG SHIFT REGISTER 4
CCD ANALOG SHIFT REGISTER 5
10 SH3
PHOTO
… DIODE (R) …
(even line)
…
…
D74
D76
PHOTO
… DIODE (R) …
(odd line)
D73
D75
S10796
S10797
S10798
S10799
S10800
D64
D65
D66
……
D59
D61
D63
S2
S4
CLAMP
D13
D15
D17
OS3 1
……
D60
D62
S1
S3
S5
D14
D16
D18
SHIFT GATE 5
SHIFT GATE 6
CCD ANALOG SHIFT REGISTER 6
4
3
8
9
CP
RS
f2A2
f1A2
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2002-04-03
TCD2905D
Pin Names
Pin No.
Symbol
1
OS3
2
3
Name
Pin No.
Symbol
Name
Signal Output 3 (red)
12
SH2
Shift Gate 2
SS
Ground
13
SH1
Shift Gate 1
RS
Reset Gate
14
f1A1
Clock 1 (phase 1)
4
CP
Clamp Gate
15
f2A1
Clock 1 (phase 2)
5
NC
Non Connection
16
NC
Non Connection
6
NC
Non Connection
17
NC
Non Connection
7
NC
Non Connection
18
NC
Non Connection
8
f2A2
Clock 2 (phase 2)
19
SW
Switch Gate
9
f1A2
Clock 2 (phase 1)
20
OD
Power
10
SH3
Shift Gate 3
21
OS1
Signal Output 1 (blue)
11
SS
Ground
22
OS2
Signal Output 2 (green)
Optical/Electrical Characteristics
(Ta = 25°C, VOD = 12 V, VSW = 5 V, VB = VSH = VRS = VCP = 5 V (pulse), fB = 1 MHz,
fRS = 2 MHz, tINT = 11 ms, light source = a light source + CM500S filter (t = 1 mm),
load resistance = 100 kW
W)
Characteristics
Symbol
Min
Typ.
Max
Unit
Note
Red
R (R)
3.2
4.7
6.2
Green
R (G)
4.4
6.4
8.4
V/lx・s
(Note2)
Blue
R (B)
2.5
3.7
4.9
PRNU (1)
¾
10
PRNU (3)
¾
3
20
%
(Note3)
12
mV
(Note4)
RI
¾
1
¾
%
(Note5)
VSAT
2.0
2.5
¾
V
(Note6)
Saturation exposure
SE
0.24
0.39
lx・s
(Note7)
Dark signal voltage
VDRK
¾
0.5
2.0
mV
(Note8)
Dark signal non uniformity
DSNU
¾
2.0
7.0
mV
(Note8)
DC power dissipation
PD
¾
480
650
mW
Total transfer efficiency
TTE
92
98
¾
%
Output impedance
ZO
-
0.3
1.0
kW
DC output voltage
VOS
5.0
6.0
7.0
V
(Note9)
VRSN
¾
0.3
¾
V
(Note9)
NDI
¾
0.9
¾
mV
(Note10)
Sensitivity
Photo response non uniformity
Register imbalance
Saturation output voltage
Reset noise
Random noise
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2002-04-03
TCD2905D
Note 2: Sensitivity is defined for each color of signal outputs average when the photosensitive surface is applied
with the light of uniform illumination and uniform color temperature.
Note 3: PRNU (1) is defined for each color on a single chip by the expressions below when the photosensitive
surface is applied with the light of uniform illumination and uniform color temperature.
DX
PRNU (1) =
´ 100 (%)
X
Where X is average of total signal output and DX is the maximum deviation from X . The amount of
incident light is shown below.
Red = 1/2・SE
Green = 1/2・SE
Blue = 1/4・SE
Note 4: PRNU (3) is defined as maximum voltage with next pixel, where measured at 5% of SE (typ.)
Note 5: Register imbalance is defined as follows.
10799
å xn - x (n + 1)
=1
n
RI =
* 100 (%)
10799 * X
Note 6: VSAT is defined as minimum saturation output of all effective pixels.
Note 7: Definition of SE
SE =
VSAT
(lx・s)
RG
Note 8: 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.
VDRK
VMDK
DSNU
Note 9: DC signal output voltage is defined as follows.
Reset Noise Voltage is defined as follows.
VRSN
OS
VMS
VOS
SS
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2002-04-03
TCD2905D
Note 10: 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 conditions) calculated by the following procedure.
video output
Output waveform
(effective pixels under
dark condition)
video output
200 ns
200 ns
pixel (n)
(1)
(2)
(3)
(4)
pixel (n + 1)
Two adjacent pixels (pixel n and n + 1) after reference level clamp in one reading are fixed as
measurement points.
Each of the output level at video output periods averaged over 200 ns period to get V (n) and V (n + 1).
V (n + 1) is subtracted from V (n) to get DV.
DV = V (n) - V (n + 1)
The standard deviation of DV is calculated after procedure (2) and (3) are repeated 30 times (30
readings).
DV =
(5)
(6)
DV
1 30
å DVi
30 i =1
30
s=
2
1
å ( DVi-DV )
30 i =1
Procedure (2), (3) and (4) are repeated 10 times to get sigma value.
10 sigma values are averaged.
10
s = 1 åsj
10 j=1
(7)
I value calculated using the above procedure is observed 2 times larger than that measured
relative to the ground level. So we specify random noise as follows.
N Ds = 1 s
2
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2002-04-03
TCD2905D
Operating Condition
Characteristics
Min
Typ.
Max
4.5
5.0
5.5
0
0
0.3
4.5
5.0
5.5
0
0
0.5
4.5
5.0
5.5
0
0
0.5
4.5
5.0
5.5
0
0
0.5
4.5
5.0
5.5
0
0
0.5
11.4
12.0
13.0
V
Symbol
Min
Typ.
Max
Unit
Clock pulse frequency
fBA
0.15
1.0
5.0
MHz
Reset pulse frequency
f RS
0.3
2.0
10.0
MHz
Clamp pulse frequency
f CP
0.3
2.0
10.0
MHz
Clock pulse voltage
Symbol
“H” Level
“L” Level
VBA
“H” Level
Shift pulse voltage
“L” Level
VSH
“H” Level
Reset pulse voltage
“L” Level
V RS
“H” Level
Clamp pulse voltage
“L” Level
V CP
“H” Level
Switch pulse voltage
“L” Level
Power supply voltage
V SW
VOD
Unit
V
V
V
V
V
Clock Characteristics (Ta = 25°C)
Characteristics
CBA
¾
400
¾
pF
Shift gate capacitance
CSH
¾
50
¾
pF
Reset gate capacitance
CRS
¾
10
¾
pF
Clamp gate capacitance
CCP
¾
10
¾
pF
Switch gate capacitance
CSW
¾
10
¾
pF
Clock capacitance
(Note 11)
Note 11: VOD = 12 V
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2002-04-03
OS
SW
(“H”)
CP
RS
f2A
f1A
SH
Timing Chart (bit clamp mode)
D4
D3
D2
D1
D0
7
1 LINE READOUT PERIOD (10878 elements)
SIGNAL OUTPUTS
(10800 elements)
S3
S2
DUMMY OUTPUTS
(14 elements)
DUMMY
OUTPUTS
(7 elements)
(4 elements)
D68
D67
D66
D65
D64
S10800
S10799
DUMMY OUTPUTS (64 elements)
(4 elements)
S1
D63
D62
D61
D60
D59
D58
LIGHT SHIELD
OUTPUTS
(47 elements)
D16
D15
D14
D13
D12
D11
D10
DUMMY OUTPUTS
(13 elements)
D77
D76
D75
D74
2002-04-03
DUMMY OUTPUT (1 element)
TEST OUTPUTS (2 elements)
TCD2905D
OS
SW
(“H”)
CP = SH
RS
f2A
f1A
SH
Timing Chart (line clamp mode)
D4
D3
D2
D1
D0
8
1 LINE READOUT PERIOD (10878 elements)
SIGNAL OUTPUTS
(10800 elements)
S3
S2
DUMMY OUTPUTS
(14 elements)
DUMMY
OUTPUTS
(7 elements)
(4 elements)
D68
D67
D66
D65
D64
S10800
S10799
DUMMY OUTPUTS (64 elements)
(4 elements)
S1
D63
D62
D61
D60
D59
D58
LIGHT SHIELD
OUTPUTS
(47 elements)
D16
D15
D14
D13
D12
D11
D10
DUMMY OUTPUTS
(13 elements)
D77
D76
D75
D74
2002-04-03
DUMMY OUTPUT (1 element)
TEST OUTPUTS (2 elements)
TCD2905D
TCD2905D
Timing Requirements
t2
t3
t4
SH
f1
t1
t5
f1A
f2
GND
3.5 V (max)
1.5 V (min)
3.5 V (max)
1.5 V (min)
RS
t20
CP
f1
10%
t7
t6
f2
10%
RS
t15
t8
t14
t10
t9
CP
t16
t17
t11
t13
t12
10% to the peak
OS
(bit clamp mode)
10%
Video signal
Peak
10%
t18
10% to the peak
Peak
10% to the peak
10% to the peak
OS
(line clamp mode)
Video signal
t18
t19
t19
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2002-04-03
TCD2905D
Characteristics
Pulse timing of SH and f1
SH pulse rise time, fall time
Symbol
Min
Typ.
(Note 12)
t1
110
1000
¾
t5
800
1000
¾
t2, t4
0
50
¾
ns
Max
Unit
ns
t3
3000
5000
¾
ns
f1, f2 pulse rise time, fall time
t6, t7
0
50
¾
ns
RS pulse rise time, fall time
t8, t10
0
20
¾
ns
t9
15
100
¾
ns
t11, t13
0
20
¾
ns
CP pulse width
t12
25
100
¾
ns
Pulse timing of f1A, f2A and CP
t14
10
40
¾
ns
Pulse timing of RS and CP
t15
0
100
¾
ns
t16, t17
¾
20
¾
ns
t18
¾
20
¾
ns
t19
¾
35
¾
ns
t20
0
500
¾
ns
SH pulse width
RS pulse width
CP pulse rise time, fall time
Video data delay time
(Note 13)
Reference level settle time
Pulse timing of SH and CP
Note 12: Typ. is the case of ff = 1.0 MHz.
Note 13: Load resistance is 100 kW.
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2002-04-03
TCD2905D
Typical Spectral Response
Spectral Response
1.0
Ta = 25°C
Red
Relative response
0.8
Green
Blue
0.6
0.4
0.2
0
400
450
500
550
Wavelength l
11
600
650
700
(nm)
2002-04-03
TCD2905D
Typical Drive Circuit
+5 V
0.1 mF/25 V
f1A1
12 V
f1A2
0.1 mF/25 V
f2A1
f2A2
10 mF/25 V
IC1
20
19
18
17
OS2 OS1 OD
22
21
SW
NC
NC
16
15
14
13
12
NC f2A1 f1A1 SH1 SH2
TCD2905D
OS3 SS
1
2
RS
CP
NC
NC
3
4
5
6
NC f2A2 f1A2 SH3
SS
7
11
8
9
10
+12 V
+5 V
0.1 mF/25 V
0.1 mF/25 V
R1
R1
R1
R1
R1
SW
R1
SH1
10 mF/25 V
TR1
OS1
SH2
TR2
OS2
SH3
TR3
OS3
CP
R2
R2
R2
RS
IC2
IC1, 2: TC74HC04AP
TR1, 2, 3: 2SC1815-Y
R1: 150 W
R2: 1500 W
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2002-04-03
TCD2905D
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 inferior 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.
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2002-04-03
TCD2905D
Application Note
The TCD2905D can be operated in two modes: Normal Readout Mode and Even Line Readout Mode.
Each mode is selected by SW terminal.
Mode
SW
Application Example
H
Normal Readout Mode
1200 DPI/A4 Reading
L
Even Line Readout Mode
600 DPI/A4 Reading
Normal Readout Mode
In Normal Readout Mode, the dummy and signal outputs in odd and even lines are read out. This mode provides
1200 DPI/A4 resolution. The timing for this mode is shown in page 8/21, 9/21 and 10/21.
Even Line Readout Mode
In Even Line Readout Mode, the dummy and signal outputs in even lines are read out. The dummy and signal
outputs in odd lines cannot be read out in this mode. This mode provides 600 DPI/A4 resolution. Timing examples
for 600 DPI/A4 reading using this mode are shown in page 15/21, 16/21 and 19/21 for reference.
In this mode, signal charges of adjacent pixels in even line can be merged at an output stage capacitor using
intermittent reset drive. Timing examples for 300 DPI/A4 reading using this mode are shown in page 17/21, 18/21
and 20/21 for reference.
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2002-04-03
OS
SW
(“L”)
CP
RS
f2A
f1A
SH
Timing Chart (600 dpi mode)
D9
D3
D1
D59
D57
D15
D13
S10798
S4
S2
D63
D61
D11
15
D65
1 LINE READOUT PERIOD (5439 elements)
SIGNAL OUTPUTS
(5400 elements)
D67
DUMMY OUTPUTS
(7 elements)
(2 elements)
D69
DUMMY
OUTPUTS
(3 elements)
D71
(2 elements)
LIGHT SHIELD OUTPUTS
(24 elements)
D73
DUMMY OUTPUTS (32 elements)
DUMMY OUTPUTS
(6 elements)
D77
D75
S10800
DUMMY OUTPUT
(1 element)
TEST OUTPUT
(1 element)
2002-04-03
TCD2905D
OS
SW
(“L”)
CP = SH
RS
f2A
f1A
SH
D9
D3
D1
S10798
S4
S2
D63
D61
D57
D15
D13
D11
16
D65
1 LINE READOUT PERIOD (5439 elements)
SIGNAL OUTPUTS
(5400 elements)
D67
DUMMY OUTPUTS
(7 elements)
(2 elements)
D69
(2 elements)
D71
DUMMY
OUTPUTS
(3 elements)
D73
DUMMY OUTPUTS (32 elements)
DUMMY OUTPUTS
(6 elements)
D59
LIGHT SHIELD OUTPUTS
(24 elements)
Timing Chart (600 dpi/line clamp mode)
D77
D75
S10800
DUMMY OUTPUT
(1 element)
TEST OUTPUT
(1 element)
2002-04-03
TCD2905D
OS
SW
(“L”)
CP
RS
f2A
f1A
SH
Timing Chart (300 dpi mode)
D9 + D11
D1 + D3
D61 + D63
(1 element)
S2 + S4
SIGNAL OUTPUTS
(2700 elements)
S10798
+ S10800
D13 + D15
17
D65 + D67
(1 element)
DUMMY OUTPUTS
(4 elements)
DUMMY
OUTPUT
(1 element)
D69 + D71
1 LINE READOUT PERIOD (2720 elements)
D57 + D59
LIGHT SHIELD
OUTPUTS
(12 elements)
D73 + D75
DUMMY OUTPUTS (16 elements)
DUMMY OUTPUTS
(3 elements)
D77
DUMMY OUTPUT
(1 element)
TEST OUTPUT
(1 element)
2002-04-03
TCD2905D
OS
SW
(“L”)
CP = SH
RS
f2A
f1A
SH
D9 + D11
D1 + D3
D61 + D63
D13 + D15
S2 + S4
SIGNAL OUTPUTS
(2700 elements)
S10798
+ S10800
18
(1 element)
D65 + D67
1 LINE READOUT PERIOD (2720 elements)
(1 element)
D69 + D71
DUMMY OUTPUTS
(4 elements)
DUMMY
OUTPUT
(1 element)
D73 + D75
DUMMY OUTPUTS (16 elements)
DUMMY OUTPUTS
(3 elements)
D57 + D59
LIGHT SHIELD
OUTPUTS
(12 elements)
Timing Chart (300 dpi/line clamp mode)
D77
DUMMY OUTPUT
(1 element)
TEST OUTPUT
(1 element)
2002-04-03
TCD2905D
TCD2905D
Timing Example
SH
f1A
tX
SW (“L” ® “H”)
SW (“H” ® “L”)
Characteristic
Pulse timing of SH and SW
Symbol
Min
Typ.
Max
Unit
tX
0
0
¾
ns
Timing Example (600 dpi mode: SW = “L”)
f1
f2
RS
CP
OS
(bit clamp mode)
Video Signal
OS
(line clamp mode)
Video Signal
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2002-04-03
TCD2905D
Timing Example (300 dpi mode: SW = “L”)
f1
f2
RS
CP
OS
(bit clamp mode)
Video Signal
OS
(line clamp mode)
Video Signal
20
2002-04-03
TCD2905D
Package Dimensions
Weight: 4.5 g (typ.)
21
2002-04-03
TCD2905D
RESTRICTIONS ON PRODUCT USE
000707EBA
· TOSHIBA 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..
· The 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.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The 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.
· The information contained herein is subject to change without notice.
22
2002-04-03
This datasheet has been download from:
www.datasheetcatalog.com
Datasheets for electronics components.