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| TCD2704D Preliminary TOSHIBA CCD Linear Image Sensor CCD (charge coupled device) TCD2704D The TCD2704D is a high sensitive and low dark current 7500 elements x 4 line CCD color image sensor which includes CCD drive circuit, clamp circuit. The sensor is designed for scanner. The device contains a row of 7500 elements x 4 line photodiodes which provide a 24 lines/mm across a A3 size paper. The device is operated by 5 V pulse and 12 V power supply. Features * * * * * * * * * Number of image sensing elements: 7500 elements x 4 line Image sensing element size: 5 m x 5 m on 5 m centers Photo sensing region: High sensitive PN photodiode Distanced between photodiode array: Color (40 m, 8 lines), B/W-color (60 m, 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 Weight: 5.2 g (typ.) Pin Connections (top view) OS3 SS 1 2 3 4 Red Green Blue Black & White 5 6 7 8 9 7500 7500 7500 7500 1 1 1 1 22 21 20 19 18 17 16 15 14 13 12 OS2 OS1 OD SS SW 1 Maximum Ratings (Note 1) Characteristic Clock pulse voltage Shift pulse voltage Reset pulse voltage Clamp pulse voltage Changeover switch voltage Power supply voltage Operating temperature Storage temperature Symbol V VSH V RS V CP V SW Rating Unit RS V V -0.3~8.0 V V V -0.3~15 0~60 -25~85 V C C 2A2 1A2 2A1 1A1 SH0 SH1 CP SW 2 1A3 SS 2A3 NC VOD Topr Tstg Note 1: All voltage are with respect to SS terminals (ground). SH3 10 SH2 11 1 2001-04-13 TCD2704D Circuit Diagram OD 20 SS 19 SW 1 1A3 2A3 6 17 18 Clamp SW1 CCD ANALOG SHIFT REGISTER (EVEN) SHIFT GATE SH0 PHOTO DIODE (Black & White) S7498 S7499 S7500 D128 148 D149 D125 D126 D127 S1 S2 D26 D27 D28 13 SH0 SHIFT GATE SH0 Clamp SW1 PHOTO DIODE (blue) S7498 S7499 S7500 D128 148 D149 D125 D126 D127 S1 S2 D26 D27 D28 CCD ANALOG SHIFT REGISTER (ODD) SHIFT GATE SH1 SW2 OS1 21 Clamp D26 D27 D28 CCD ANALOG SHIFT REGISTER PHOTO DIODE (green) S7498 S7499 S7500 D128 148 D149 D125 D126 D127 S1 S2 12 SH1 14 1A1 15 2A1 SHIFT GATE SH2 SW2 OS2 22 Clamp D26 D27 D28 CCD ANALOG SHIFT REGISTER PHOTO DIODE (red) S7498 S7499 S7500 D128 148 D149 D125 D126 D127 S1 S2 11 SH2 SHIFT GATE SH3 OS3 1 Clamp CCD ANALOG SHIFT REGISTER 10 SH3 5 SW 2 4 CP 3 RS 7 SS 9 8 1A2 2A2 Pin Names OS3 SS RS CP SW 2 Signal Output 3 (red) Ground Reset Gate Clamp Gate Changeover Switch 2 (color and B/W) Clock 3 (phase 1) Ground Clock 2 (phase 2) Clock 2 (phase 1) Shift Gate 3 Shift Gate 2 OS2 OS1 OD SS SW 1 Signal Output 2 (green) Signal Output 1 (blue) Power Ground Changeover Switch 1 (color and B/W) Clock 3 (phase 2) Non Connection Clock 1 (phase 2) Clock 1 (phase 1) Shift Gate 0 Shift Gate 1 1A3 SS 2A2 1A2 SH3 SH2 2A3 NC 2A1 1A1 SH0 SH1 2 2001-04-13 TCD2704D Optical/Electrical Characteristics (Ta = 25C, VOD = 12 V, V = VRS = VSH = VCP = 5 V (pulse), f = 1.0 MHz, fRS = 1.0 MHz, LOAD RESISTANCE = 100 k, tINT (INTEGRATION TIME) = 10 ms, LIGHT SOURCE = A LIGHT SOURCE + CM500S FILTER (t = 1.0 mm)) Characteristics Symbol RB/W Sensitivity RR RG RB PRNU (1) Photo response non uniformity PRNU (3) Image lag Saturation output voltage (B/W) Saturation output voltage (color) Saturation exposure Dark signal voltage Dark signal non uniformity DC power dissipation Total transfer efficiency Output impedance DC signal output voltage Random noise Reset noise IL VSAT (B/W) VSAT (color) SE VDRK DSNU PD TTE ZO VOS ND VRSN Min 8.6 3.2 3.7 1.9 1.5 2.0 92 5.0 Typ. 10.8 4.6 5.4 2.8 10 3 1 2.0 2.5 0.19 0.4 7 525 0.3 6.0 1.0 0.5 Max 13.0 6.0 7.1 3.7 20 12 2.0 12 650 1.0 7.0 1.0 % mV % V V lx s mV mV mW % k V mV V (Note 3) (Note 4) (Note 5) (Note 6) (Note 6) (Note 7) (Note 8) (Note 8) (Note 9) (Note 10) (Note 9) V/(lx s) (Note 2) Unit Note 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. X PRNU (1) = x 100 (%) X When X is average of total signal output and X is the maximum deviation from X . The amount of incident light is shown below. 1 1 1 Ped = SE, Green = SE, Blue = SE 2 2 4 Note 4: PRNU (3) is defined as maximum voltage with next pixel, where measured 5% of SE (typ.) 3 2001-04-13 TCD2704D Note 5: Image lag is defined as follows. SH ON LED OFF OS Image lag Signal (500 mV) Note 6: VSAT is defined as minimum saturation output of all effective pixels. V Note 7: Definition of SE: SE = SAT (lx s) RB/W 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 and reset noise is defined as follows, but reset noise is a fixed pattern noise. VRSN OS VOS SS 4 2001-04-13 TCD2704D 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 video output 200 ns 200 ns pixel (n) V pixel (n + 1) Output waveform (effective pixels under dark condition) (1) (2) (3) (4) Two adjacent pixels (pixel n and n + 1) 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 V. V = V (n) - V (n + 1) The standard deviation of V is calculated after procedure (2) and (3) are repeated 30 times (30 readings) V = 1 | Vi | 30 i =1 30 = 2 1 (| Vi | V ) 30 i =1 30 (5) (6) Procedure (2), (3) and (4) are repeated 10 times to get sigma value. 10 sigma values are averaged. = 1 j 10 j=1 10 (7) 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 D = 1 2 5 2001-04-13 TCD2704D Operating Condition Characteristics Clock pulse voltage "H" Level "L" Level "H" Level Shift pulse voltage "L" Level "H" Level Reset pulse voltage "L" Level "H" Level Clamp pulse voltage "L" Level "H" Level Switch pulse voltage "L" Level Power supply voltage V SW V CP V RS Symbol VA Min 4.5 0 4.5 Typ. 5.0 5.0 5.0 5.0 5.0 12.0 Max 5.5 0.5 5.5 Unit V Note VSH V 0.5 5.5 V 0.5 5.5 V 0.5 5.5 V 0.5 13.0 V 0 4.5 0 4.5 0 4.5 0 11.4 VOD Clock Characteristics (Ta = 25C) Characteristics Clock pulse frequency Reset pulse frequency Clamp pulse frequency Clock1 capacitance Clock2 capacitance Shift gate capacitance Reset gate capacitance Clamp gate capacitance Switch gate capacitance (Note 11) (Note 11) Symbol f f RS f CP Min 0.3 0.3 0.3 Typ. 1.0 1.0 1.0 260 210 30 10 10 10 Max 12 12 12 390 315 60 40 40 40 Unit MHz MHz MHz pF pF pF pF pF pF C1 C2 CSH CRS CCP CSW Note 11: VOD = 12 V 6 2001-04-13 TCD2704D Timing Chart 1: Bit Clamp Mode (color or B/W mode) tINT (integration time) SH 1A 2A RS CP S3686 S3687 S3688 S3689 S3690 S7500 S3696 S3697 S3698 D126 D127 D128 D129 D131 D149 D121 D122 D123 D124 D125 D130 D132 D133 D134 D145 D146 D147 D148 D25 D61 D62 D63 D64 D12 D13 D26 D60 D0 D1 S1 OS1, 2, 3 (color) DUMMY OUTPUTS (26 elements) LIGHT SHIELD OUTPUTS (96 elements) DUMMY OUTPUTS (128 elements) DUMMY OUTPUTS (6 elements) SIGNAL OUTPUTS (7500 elements) 1 LINE READOUT PERIOD (7650 elements) (6 elements) (12 elements) TEST OUTPUTS (1 elements) DUMMY OUTPUTS (3 elements) DUMMY OUTPUTS (22 elements) S7499 D126 D120 D122 D124 D128 D130 D132 D134 D146 D148 S115 S117 S119 S121 S123 S125 S127 S129 D50 D52 D24 D26 D0 D2 S1 OS2 (B/W) S7500 D127 D121 D123 D125 D129 D131 D133 D135 D147 D149 S116 S118 S120 S122 S124 S126 S128 S130 D51 D53 D25 D27 D1 D3 S2 OS1 (B/W) DUMMY OUTPUTS (13 elements) LIGHT SHIELD OUTPUTS (3 elements) (48 elements) SIGNAL OUTPUTS (3750 elements) 1 LINE READOUT PERIOD (3825 elements) (3 elements) DUMMY OUTPUTS (6 elements) TEST OUTPUT (1 element) DUMMY OUTPUT (1 element) DUMMY OUTPUTS (11 elements) DUMMY OUTPUTS (64 elements) 7 2001-04-13 TCD2704D Timing Chart 2: Line Clamp Mode (color or B/W mode) tINT (integration time) SH 1A 2A RS CP = SH CP = "H" S3686 S3687 S3688 S3689 S3690 S7500 S3696 S3697 S3698 D126 D127 D128 D129 D131 D149 D121 D122 D123 D124 D125 D130 D132 D133 D134 D145 D146 D147 D148 D25 D61 D62 D63 D64 D12 D13 D26 D60 D0 D1 S1 OS1, 2, 3 (color) DUMMY OUTPUTS (26 elements) LIGHT SHIELD OUTPUTS (96 elements) DUMMY OUTPUTS (128 elements) DUMMY OUTPUTS (6 elements) SIGNAL OUTPUTS (7500 elements) 1 LINE READOUT PERIOD (7650 elements) (6 elements) (12 elements) TEST OUTPUTS (1 elements) DUMMY OUTPUTS (3 elements) DUMMY OUTPUTS (22 elements) S7499 D126 D120 D122 D124 D128 D130 D132 D134 D146 D148 S115 S117 S119 S121 S123 S125 S127 S129 D50 D52 D24 D26 D0 D2 S1 OS2 (B/W) S7500 D127 D121 D123 D125 D129 D131 D133 D135 D147 D149 S116 S118 S120 S122 S124 S126 S128 S130 D51 D53 D25 D27 D1 D3 S2 OS1 (B/W) DUMMY OUTPUTS (13 elements) LIGHT SHIELD OUTPUTS (3 elements) (48 elements) SIGNAL OUTPUTS (3750 elements) 1 LINE READOUT PERIOD (3825 elements) (3 elements) DUMMY OUTPUTS (6 elements) TEST OUTPUT (1 element) DUMMY OUTPUT (1 element) DUMMY OUTPUTS (11 elements) DUMMY OUTPUTS (64 elements) 8 2001-04-13 TCD2704D D148 D146 D147 D149 D134 D132 D130 D128 S7499 S7500 D129 D131 1 LINE READOUT PERIOD (3825 elements) D133 D135 S1 D126 D124 D122 D120 D121 D123 D125 D127 S2 D26 D24 OS1 (B/W) OS2 (B/W) D25 D27 D2 D0 D1 D3 D149 D148 D147 D146 D145 D149 D148 D147 D146 D145 D134 D133 tINT (integration time) D132 D134 1 LINE READOUT PERIOD (7650 elements) D133 D132 D128 S7500 D128 S7500 S1 D127 S1 D127 D123 D122 D121 D123 D122 D121 D26 D26 D25 D25 Timing Chart 3 (color B/W mode) D1 D0 D1 D0 1A SH OS1 (blue) 2A RS CP SW 2 SW1 OS2 (green) 9 2001-04-13 TCD2704D Timing Requirements t2 SH t1 1A t5 2 GND 3.5 V (max) 1.5 V (min) t3 t4 1 RS t6 CP t7 CP = SH (line clamp mode) t8 B/W Color mode: SW 1 ("L" "H") Color B/W mode: SW 2 ("L" "H") B/W Color mode: SW 2 ("H" "L") Color B/W mode: SW 1 ("H" "L") 1 t9 2 10% t10 10% t11 t12 90% t14 t16 t15 t17 90% t20 10% to the peak RS t13 CP t18 t19 OS (bit clamp mode) Peak 10% Video signal 10% to the peak OS (line clamp mode) t21 10 2001-04-13 TCD2704D Timing Requirements (cont.) Characteristics Pulse timing of SH and 1 SH pulse rise time, fall time SH pulse width Pulse timing of SH and CP Pulse timing of SH and CP (line clamp mode) Pulse timing of SH and SW 1, 2 pulse rise time, fall time RS pulse rise time, fall time RS pulse width Symbol t1 t5 t2, t4 t3 t6 t7 t8 t9, t10 t11, t12 t13 t14 t15 t16, t17 t18 t19 (Note 14) t20 t21 Min 120 800 0 3000 200 10 100 0 0 10 (20) 0 0 0 30 (3000) Typ. (Note 12) 1000 1000 50 5000 500 100 500 50 20 80 40 20 20 80 (5000) 20 20 30 Max t3 - 100 40 (Note 16) 40 (Note 15) 50 (Note 16) Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Pulse timing of RS and CP Pulse timing of 1A, 2A and CP CP pulse rise time, fall time CP pulse width (Note 13) Reference level settle time (bit clamp mode) Video data delay time Reference level settle time (line clamp mode) Note 12: Typ. is the case of f RS = 1.0 MHz. Note 13: Line clamp Mode inside ( ). Note 14: Load Resistance is 100 k. Note 15: Typical settle time to about 1% of final value. Note 16: Typical settle time to about 1% of the peak. Clamp Mode Clamp Means Bit clamp Line clamp CP Input Pulse CP Pulse "H" or SH Changeover Switch Mode Output Type Color B/W SW1 Input Pulse SW 2 Input Pulse "H" "L" "L" "H" 11 2001-04-13 TCD2704D Typical Spectral Response Spectral response 1.0 Ta = 25C 0.8 Red Relative response 0.6 Blue Green 0.4 0.2 0 400 450 500 550 600 650 700 Wavelength (nm) 12 2001-04-13 TCD2704D Typical Drive Circuit +5 V 1 F/25 V 47 F/25 V SW 1 12 V SW 2 1 F/25 V +5 V IC5 47 F/25 V 1 F/25 V 47 F/25 V 1A1 2A1 22 21 20 19 SS 18 17 16 15 14 13 12 IC1 +5 V 2A2 1A2 SH3 SH2 8 9 10 11 1A2 1 F/25 V 47 F/25 V OS2 OS1 OD SW 1 2A3 NC 2A1 1A1 SH0 SH1 TCD2704D OS3 SS 1 2 RS CP SW 2 1A3 SS 7 3 4 5 6 2A2 IC2 +5 V 1 F/25 V 47 F/25 V 1A3 2A3 12 V 1 F/25 V IC3 47 F/25 V +5 V 1 F/25 V 47 F/25 V SH0 SH1 SH2 SH3 CP OS1 OS2 OS3 IC1, 2, 3 : TC74AC04 IC4, 5 : TC74HC04 RS IC4 13 2001-04-13 TCD2704D 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 260C, or within three seconds for lead temperatures of up to 350C. 14 2001-04-13 TCD2704D Package Dimensions Weight: 5.2 g (typ.) 15 2001-04-13 TCD2704D 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. 16 2001-04-13 |
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