Document
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
· · · · · · · · · 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
OS3 SS
RS CP
Weight: 4.5 g (typ.)
Pin Connections (top view)
1 1 1 2 3 4 5 G R 6 7 8 9 10800 10800 10800 B 1 22 21 20 19 18 17 16 15 14 13 12 OS2 OS1 OD
SW
Maximum Ratings (Note1)
Characteristic Clock pulse voltage Shift pulse voltage Reset pulse voltage Clamp pulse voltage Switch pulse voltage Power supply voltage Operating temperature Storage temperature Symbol VBA VSH
V RS V CP V SW
Rating
Unit NC NC NC NC NC f2A1 f1A1 SH1 SH2
-0.3~8.0
V
NC f2A2
VOD Topr Tstg
-0.3~15 0~60 -25~85
V °C °C
f1A2
SH3 10 SS 11
Note 1: All voltage are with respect to SS terminals (ground).
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TCD2905D
Block Diagram
OD 20
SW
f2A1 15
f1A1 14
19
CCD ANALOG SHIFT REGISTER 1 SHIFT GATE 1 …… PHOTO … DIODE (B) … (odd line) S10796 S10797 S10798 S10799 S10800 D64 D65 D66 D14 D16 D18 D60 D62 S1 S3 S5 … D74 D76 13 SH1
OS1 21
CLAMP D13 D15 D17 D59 D61 D63 S2 S4 ……
PHOTO … DIODE (B) … (even line)
…
SHIFT GATE 2 CCD ANALOG SHIFT REGISTER 2
CCD ANALOG SHIFT REGISTER 3 SHIFT GATE 3 …… PHOTO … DIODE (G) … (odd line) S10796 S10797 S10798 S10799 S10800 D46 D65 D66 D14 D16 D18 D60 D62 S1 S3 S5 … D74 D76 12 SH2
OS2 22
CLAMP D13 D15 D17 D59 D61 D63 S2 S4 ……
PHOTO … DIODE (G) … (even line)
…
SHIFT GATE 4 CCD ANALOG SHIFT REGISTER 4
CCD ANALOG SHIFT REGISTER 5 SHIFT GATE 5 …… PHOTO … DIODE (R) … (odd line) S10796 S10797 S10798 S10799 S10800 D64 D65 D66 D14 D16 D18 D60 D62 S1 S3 S5 … D74 D76 10 SH3
OS3 1
CLAMP D13 D15 D17 D59 D61 D63 S2 S4 ……
PHOTO … DIODE (R) … (even line)
…
SHIFT GATE 6 CCD ANALOG SHIFT REGISTER 6
4
CP
3
RS
8 f2A2
9 f1A2
D73 D75
D73 D75
D73 D75
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2002-04-03
TCD2905D
Pin Names
Pin No. 1 2 3 4 5 6 7 8 9 10 11 Symbol OS3 SS
RS CP
Name Signal Output 3 (red) Ground Reset Gate Clamp Gate Non Connection Non Connection Non Connection Clock 2 (phase 2) Clock 2 (phase 1) Shift Gate 3 Ground
Pin No. 12 13 14 15 16 17 18 19 20 21 22
Symbol SH2 SH1 f1A1 f2A1 NC NC NC
SW
Name Shift Gate 2 Shift Gate 1 Clock 1 (phase 1) Clock 1 (phase 2) Non Connection Non Connection Non Connection Switch Gate Power Signal Output 1 (blue) Signal Output 2 (green)
NC NC NC f2A2 f1A2 SH3 SS
OD OS1 OS2
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)
Characteristics Red Sensitivity Green Blue Photo response non uniformity PRNU (3) Register imbalance Saturation output voltage Saturation exposure Dark signal voltage Dark signal non uniformity DC power dissipation Total transfer efficiency Output impedance DC output voltage Reset noise Random noise RI VSAT SE VDRK DSNU PD TTE ZO VOS VRSN NDI Symbol R (R) R (G) R (B) PRNU (1) Min 3.2 4.4 2.5 ¾ ¾ ¾ 2.0 0.24 ¾ ¾ ¾ 92 - 5.0 ¾ ¾ Typ. 4.7 6.4 3.7 10 3 1 2.5 0.39 0.5 2.0 480 98 0.3 6.0 0.3 0.9 2.0 7.0 650 ¾ 1.0 7.0 ¾ ¾ Max 6.2 8.4 4.9 20 12 ¾ ¾ % mV % V lx・s mV mV mW % kW V V mV (Note9) (Note9) (Note10) (Note3) (Note4) (Note5) (Note6) (Note7) (Note8) (Note8) V/lx・s (Note2) Unit Note
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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 .