ICX254AL Diagonal 6mm (Type 1/3) CCD Image Sensor for EIA B/W Video Cameras Description The ICX254AL is an interline CCD solid-state image sensor suitable for EIA B/W video cameras with a diagonal 6mm (Type 1/3) system. Compared with the current product ICX054BL, basic characteristics such as sensitivity, smear, dynamic range and S/N are improved drastically from visible light region to near infrared light region through the adoption of EXview HAD CCDTM technology. This chip features a field period readout system and an electronic shutter with variable charge-storage time. Features • Sensitivity in near infrared light region (+8dB compared with the ICX054BL, λ = 945nm) • High sensitivity (+6dB compared with the ICX054BL, no IR cut filter) • Low smear (–20dB compared with the ICX054BL) • High D range (+2dB compared with the ICX054BL) • High S/N • Low dark current • Excellent antiblooming characteristics • Continuous variable-speed shutter • No voltage adjustment (Reset gate and substrate bias are not adjusted.) • Reset gate: 5V drive • Horizontal register: 5V drive 16 pin DIP (Plastic) AAAAA AAAAA AAAAA AAAAA AAAAA Pin 1 1 V 2 Pin 9 H 12 25 Optical black position (Top View) Device Structure • Interline CCD image sensor • Image size: Diagonal 6mm (Type 1/3) • Number of effective pixels: 510 (H) × 492 (V) approx. 250K pixels • Total number of pixels: 537 (H) × 505 (V) approx. 270K pixels • Chip size: 6.00mm (H) × 4.96mm (V) • Unit cell size: 9.6µm (H) × 7.5µm (V) • Optical black: Horizontal (H) direction : Front 2 pixels, rear 25 pixels Vertical (V) direction : Front 12 pixels, rear 1 pixel • Number of dummy bits: Horizontal 16 Vertical 1 (even fields only) • Substrate material: Silicon TM ∗ EXview HAD CCD is a trademark of Sony Corporation. EXview HAD CCD is a CCD that drastically improves light efficiency by including near infrared light region as a basic structure of HAD (Hole-Accumulation-Diode) sensor. Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E99520-PS NC GND Vφ1 Vφ2 Vφ3 Vφ4 8 7 6 5 4 3 2 1 Vertical Register NC Block Diagram and Pin Configuration (Top View) VOUT ICX254AL Note) Horizontal Register GND φSUB VL Pin Description Pin No. Symbol Description 13 14 Pin No. 15 16 Hφ2 12 Hφ1 11 NC 10 φRG 9 VDD Note) : Photo sensor Description Symbol 1 Vφ4 Vertical register transfer clock 9 VDD Supply voltage 2 Vφ3 Vertical register transfer clock 10 GND GND 3 Vφ2 Vertical register transfer clock 11 φSUB Substrate clock 4 Vφ1 Vertical register transfer clock 12 VL Protective transistor bias 5 GND GND 13 φRG Reset gate clock 6 NC 14 NC 7 NC 15 Hφ1 Horizontal register transfer clock 8 VOUT 16 Hφ2 Horizontal register transfer clock Signal output Absolute Maximum Ratings Item Against φSUB Against GND Against VL Ratings Unit VDD, VOUT, φRG – φSUB –40 to +8 V Vφ1, Vφ3 – φSUB –50 to +15 V Vφ2, Vφ4, VL – φSUB –50 to +0.3 V Hφ1, Hφ2, GND – φSUB –40 to +0.3 V VDD, VOUT, φRG – GND –0.3 to +20 V Vφ1, Vφ2, Vφ3, Vφ4 – GND –10 to +18 V Hφ1, Hφ2 – GND –10 to +6 V Vφ1, Vφ3 – VL –0.3 to +28 V Vφ2, Vφ4, Hφ1, Hφ2, GND – VL –0.3 to +15 V to +15 V Voltage difference between vertical clock input pins Between input clock pins Hφ1 – Hφ2 –6 to +6 V –14 to +14 V Storage temperature –30 to +80 °C Operating temperature –10 to +60 °C Hφ1, Hφ2 – Vφ4 ∗1 +24V (Max.) when clock width < 10µs, clock duty factor < 0.1%. –2– Remarks ∗1 ICX254AL Bias Conditions Symbol Item Min. Typ. Max. Unit 14.55 15.0 ∗1 15.45 V Supply voltage VDD Protective transistor bias VL Substrate clock φSUB ∗2 Reset gate clock φRG ∗2 Remarks ∗1 VL setting is the VVL voltage of the vertical transfer clock waveform, or the same power supply as the VL power supply for the V driver should be used. ∗2 Do not apply a DC bias to the substrate clock and reset gate clock pins, because a DC bias is generated within the CCD. DC Characteristics Item Symbol Supply current Min. IDD Typ. Max. Unit 3 6 mA Remarks Clock Voltage Conditions Item Readout clock voltage Vertical transfer clock voltage Horizontal transfer clock voltage Min. Typ. Max. Unit Waveform diagram VVT 14.55 15.0 15.45 V 1 VVH1, VVH2 –0.05 0 0.05 V 2 VVH3, VVH4 –0.2 0 0.05 V 2 VVL1, VVL2, VVL3, VVL4 –8.0 –7.0 –6.5 V 2 VVL = (VVL3 + VVL4)/2 VφV 6.3 7.0 8.05 V 2 VφV = VVHn – VVLn (n = 1 to 4) Symbol VVH = (VVH1 + VVH2)/2 VVH3 – VVH –0.25 0.1 V 2 VVH4 – VVH –0.25 0.1 V 2 VVHH 0.3 V 2 High-level coupling VVHL 0.3 V 2 High-level coupling VVLH 0.3 V 2 Low-level coupling VVLL 0.3 V 2 Low-level coupling VφH 4.75 5.0 5.25 V 3 VHL –0.05 0 0.05 V 3 4.5 5.0 5.5 V 4 Input through 0.1µF capacitance VRGLH – VRGLL 0.4 V 4 Low-level coupling VRGL – VRGLm 0.5 V 4 Low-level coupling 23.5 V 5 VφRG Reset gate clock voltage Remarks Substrate clock voltage VφSUB 21.0 22.0 –3– ICX254AL Clock Equivalent Circuit Constant Symbol Item Min. Typ. Max. Unit CφV1, CφV3 1500 pF CφV2, CφV4 1000 pF CφV12, CφV34 560 pF CφV23, CφV41 330 pF CφV13 150 pF CφV24 270 pF Capacitance between horizontal transfer clock and GND CφH1, CφH2 47 pF Capacitance between horizontal transfer clocks CφHH 22 pF Capacitance between reset gate clock and GND CφRG 5 pF Capacitance between substrate clock and GND CφSUB 320 pF R1, R3 75 Ω R2, R4 100 Ω Vertical transfer clock ground resistor RGND 100 Ω Horizontal transfer clock series resistor RφH 10 Ω Reset gate clock series resistor RφRG 50 Ω Capacitance between vertical transfer clock and GND Capacitance between vertical transfer clocks Vertical transfer clock series resistor Vφ1 Remarks Vφ2 CφV12 R1 R2 RφH RφH Hφ2 Hφ1 CφV1 CφHH CφV2 CφV41 CφV23 CφH1 CφH2 CφV13 CφV24 CφV4 RGND CφV3 R4 R3 CφV34 Vφ4 Vφ3 Vertical transfer clock equivalent circuit Horizontal transfer clock equivalent circuit RφRG RGφ CφRG Reset gate clock equivalent circuit –4– ICX254AL Drive Clock Waveform Conditions (1) Readout clock waveform 100% 90% II II φM VVT φM 2 10% 0% tr twh 0V tf (2) Vertical transfer clock waveform Vφ1 Vφ3 VVHH VVH1 VVHH VVH VVHL VVHL VVH3 VVHL VVL1 VVH VVHH VVHH VVHL VVL3 VVLH VVLH VVLL VVLL VVL VVL Vφ2 Vφ4 VVHH VVHH VVH VVH VVHH VVHH VVHL VVHL VVH2 VVHL VVH4 VVL2 VVHL VVLH VVLH VVLL VVLL VVL VVL4 VVH = (VVH1 + VVH2)/2 VVL = (VVL3 + VVL4)/2 VφV = VVHn – VVLn (n = 1 to 4) –5– VVL ICX254AL (3) Horizontal transfer clock waveform tr twh tf 90% twl VφH 10% VHL (4) Reset gate clock waveform tr twh tf VRGH twl Point A VφRG RG waveform VRGLH VRGL VRGLL VRGLm Hφ1 waveform 10% VRGLH is the maximum value and VRGLL is the minimum value of the coupling waveform during the period from Point A in the above diagram until the rising edge of RG. In addition, VRGL is the average value of VRGLH and VRGLL. VRGL = (VRGLH + VRGLL)/2 Assuming VRGH is the minimum value during the interval twh, then: VφRG = VRGH – VRGL Negative overshoot level during the falling edge of RG is VRGLm. (5) Substrate clock waveform 100% 90% φM VφSUB 10% 0% VSUB (A bias generated within the CCD) tr twh –6– φM 2 tf ICX254AL Clock Switching Characteristics Item Symbol VT Vertical transfer clock Vφ1, Vφ2, Vφ3, Vφ4 Horizontal transfer clock Readout clock During imaging Hφ twh twl tr tf Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. 2.3 2.5 0.5 0.5 During Hφ1 parallel-serial conversion Hφ2 41 38 42 5.6 Reset gate clock φRG 11 Substrate clock φSUB 1.5 2.0 15 75 12 15 10 0.012 0.012 5.6 0.012 0.012 79 6.5 4.5 0.5 ∗1 When vertical transfer clock driver CXD1267AN is used. ∗2 tf ≥ tr – 2ns. –7– µs During readout 250 ns ∗1 15 37 Unit Remarks 15 ns ∗2 µs ns 0.5 µs During drain charge ICX254AL Image Sensor Characteristics Item (Ta = 25°C) Symbol Min. Typ. Sensitivity 1 S1 1300 Sensitivity 2 S2 3000 Saturation signal Vsat 1000 Smear Sm Video signal shading SH Dark signal Max. Unit Measurement method 1600 mV 1 4000 mV 2 mV 3 –103 dB 4 20 % 5 Zone 0 and I 25 % 5 Zone 0 to II' Vdt 2 mV 6 Ta = 60°C Dark signal shading ∆Vdt 1 mV 7 Ta = 60°C Flicker F 2 % 8 Lag Lag 0.5 % 9 –120 Zone Definition of Video Signal Shading 510 (H) 10 8 9 H 8 V 10 H 8 Zone 0, I Zone II, II' V 10 492 (V) 10 Ignored region Effective pixel region –8– Remarks Ta = 60°C ICX254AL Image Sensor Characteristics Measurement Method Measurement conditions 1) In the following measurements, the device drive conditions are at the typical values of the bias and clock voltage conditions. 2) In the following measurements, spot blemishes are excluded and, unless otherwise specified, the optical black (OB) level is used as the reference for the signal output, and the value measured at point [∗A] in the drive circuit example is used. Definition of standard imaging conditions 1) Standard imaging condition I: Use a pattern box (luminance: 706cd/m2, color temperature of 3200K halogen source) as a subject. (Pattern for evaluation is not applicable.) Use a testing standard lens with CM500S (t = 1.0mm) as an IR cut filter and image at F8. The luminous intensity to the sensor receiving surface at this point is defined as the standard sensitivity testing luminous intensity. 2) Standard imaging condition II: Indicate the state which removes an IR cut filter of standard imaging condition I. 3) Standard imaging condition III: Image a light source (color temperature of 3200K) with a uniformity of brightness within 2% at all angles. Use a testing standard lens with CM500S (t = 1.0mm) as an IR cut filter. The luminous intensity is adjusted to the value indicated in each testing item by the lens diaphragm. 1. Sensitivity 1 Set to standard imaging condition I. After selecting the electronic shutter mode with a shutter speed of 1/250s, measure the signal output (Vs1) at the center of the screen and 250 S1 = Vs1 × [mV] substitute the value into the following formula. 60 2. Sensitivity 2 Set to standard imaging condition II. After selecting the electronic shutter mode with a shutter speed of 1/1000s, measure the signal output (Vs2) at the center of the screen 1000 S2 = Vs2 × [mV] and substitute the value into the following formula. 60 3. Saturation signal Set to standard imaging condition III. After adjusting the luminous intensity to 10 times the intensity with the average value of the signal output, 200mV, measure the minimum value of the signal output. 4. Smear Set to standard imaging condition III. With the lens diaphragm at F5.6 to F8, adjust the luminous intensity to 500 times the intensity with average value of the signal output, 200mV. When the readout clock is stopped and the charge drain is executed by the electronic shutter at the respective H blankings, measure the maximum value YSm [mV] of the signal output and substitute the value into the following formula. Sm = 20 × log 1 VSm 1 × × 10 200 500 [dB] (1/10V method conversion value) –9– ICX254AL 5. Video signal shading Set to standard imaging condition III. With the lens diaphragm at F5.6 to F8, adjust the luminous intensity so that the average value of the signal output is 200mV. Then measure the maximum (Vmax [mV]) and minimum (Vmin [mV]) values of the signal output and substitute the values into the following formula. SH = (Vmax – Vmin)/200 × 100 [%] 6. Dark signal Measure the average value of the signal output (Vdt [mV]) with the device ambient temperature 60°C and the device in the light-obstructed state, using the horizontal idle transfer level as a reference. 7. Dark signal shading After measuring 6, measure the maximum (Vdmax [mV]) and minimum (Vdmin [mV]) values of the dark signal output and substitute the values into the following formula. ∆Vdt = Vdmax – Vdmin [mV] 8. Flicker Set to standard imaging condition III. Adjust the luminous intensity so that the average value of the signal output is 200mV, and then measure the difference in the signal level between fields (∆Vf [mV]). Then substitute the value into the following formula. F = (∆Vf/200) × 100 [%] 9. Lag Adjust the signal output value generated by strobe light to 200mV. After setting the strobe light so that it strobes with the following timing, measure the residual signal (Vlag). Substitute the value into the following formula. Lag = (Vlag/200) × 100 [%] FLD V1 Light Strobe light timing Y signal output 200mV Output – 10 – Ylag (lag) RG Hφ1 Hφ2 XV4 XSG2 XV3 XSG1 XV1 XV2 XSUB 13 12 11 8 9 10 22/20V 14 7 15 16 5 CXD1267AN 17 4 6 18 22/16V 1/35V 0.1 1 2 0.1 5 6 3.3/20V 2SK523 9 0.01 1500p 3.9k 100 8 3.3/16V 7 ICX254 (BOTTOM VIEW) 4 3 16 15 14 13 12 11 10 Vφ4 Hφ2 3 100k Vφ2 NC 20 Vφ3 Hφ1 19 Vφ1 φRG 2 GND VL 1 NC φSUB 15V NC GND VOUT – 11 – VDD Drive Circuit 1M [∗A] CCD OUT –7.0V ICX254AL ICX254AL Spectral Sensitivity Characteristics (excludes both lens characteristics and light source characteristics) 1.0 0.9 0.8 Relative Response 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 400 500 600 700 800 900 1000 Wave Length [nm] Sensor Readout Clock Timing Chart V1 2.5 V2 Odd Field V3 V4 31.3 1.2 1.5 2.5 2.0 0.3 V1 V2 Even Field V3 V4 Unit : µs – 12 – – 13 – CCD OUT V4 V3 V2 V1 HD BLK VD FLD 492 491 525 1 2 3 4 5 520 Drive Timing Chart (Vertical Sync) 10 2 4 6 1 3 5 2 4 6 1 3 5 265 492 491 275 2 4 6 1 3 5 280 2 4 6 1 3 5 ICX254AL 270 260 20 15 – 14 – SUB V4 V3 V2 V1 RG H2 H1 BLK HD 10 510 1 2 3 5 505 500 Drive Timing Chart (Horizontal Sync) ICX254AL 10 15 16 1 2 1 2 3 5 10 1 2 3 5 25 20 15 ICX254AL Notes on Handling 1) Static charge prevention CCD image sensors are easily damaged by static discharge. Before handling be sure to take the following protective measures. a) Either handle bare handed or use non-chargeable gloves, clothes or material. Also use conductive shoes. b) When handling directly use an earth band. c) Install a conductive mat on the floor or working table to prevent the generation of static electricity. d) Ionized air is recommended for discharge when handling CCD image sensor. e) For the shipment of mounted substrates, use boxes treated for the prevention of static charges. 2) Soldering a) Make sure the package temperature does not exceed 80°C. b) Solder dipping in a mounting furnace causes damage to the glass and other defects. Use a ground 30W soldering iron and solder each pin in less than 2 seconds. For repairs and remount, cool sufficiently. c) To dismount an image sensor, do not use a solder suction equipment. When using an electric desoldering tool, use a thermal controller of the zero cross On/Off type and connect it to ground. 3) Dust and dirt protection Image sensors are packed and delivered by taking care of protecting its glass plates from harmful dust and dirt. Clean glass plates with the following operation as required, and use them. a) Perform all assembly operations in a clean room (class 1000 or less). b) Do not either touch glass plates by hand or have any object come in contact with glass surfaces. Should dirt stick to a glass surface, blow it off with an air blower. (For dirt stuck through static electricity ionized air is recommended.) c) Clean with a cotton bud and ethyl alcohol if the grease stained. Be careful not to scratch the glass. d) Keep in a case to protect from dust and dirt. To prevent dew condensation, preheat or precool when moving to a room with great temperature differences. e) When a protective tape is applied before shipping, just before use remove the tape applied for electrostatic protection. Do not reuse the tape. 4) Installing (attaching) a) Remain within the following limits when applying a static load to the package. Do not apply any load more than 0.7mm inside the outer perimeter of the glass portion, and do not apply any load or impact to limited portions. (This may cause cracks in the package.) AAAA AAAA AAAA AAAA AAAA AAAA Cover glass 50N 50N 1.2Nm Plastic package Compressive strength – 15 – Torsional strength ICX254AL b) If a load is applied to the entire surface by a hard component, bending stress may be generated and the package may fracture, etc., depending on the flatness of the bottom of the package. Therefore, for installation, use either an elastic load, such as a spring plate, or an adhesive. c) The adhesive may cause the marking on the rear surface to disappear, especially in case the regulated voltage value is indicated on the rear surface. Therefore, the adhesive should not be applied to this area, and indicated values should be transferred to the other locations as a precaution. d) The notch of the package is used for directional index, and that can not be used for reference of fixing. In addition, the cover glass and seal resin may overlap with the notch of the package. e) If the lead bend repeatedly and the metal, etc., clash or rub against the package, the dust may be generated by the fragments of resin. f) Acrylate anaerobic adhesives are generally used to attach CCD image sensors. In addition, cyanoacrylate instantaneous adhesives are sometimes used jointly with acrylate anaerobic adhesives. (reference) 5) Others a) Do not expose to strong light (sun rays) for long periods. For continuous using under cruel condition exceeding the normal using condition, consult our company. b) Exposure to high temperature or humidity will affect the characteristics. Accordingly avoid storage or usage in such conditions. c) The brown stain may be seen on the bottom or side of the package. But this does not affect the CCD characteristics. d) This CCD image sensor has sensitivity in the near infrared area. Its focus may not match in the same condition under visible light /near infrared light because of aberration. Incident light component of long wavelength which transmits the silicon substrate may have bad influence upon image. – 16 – – 17 – 1.2 2.5 0.69 ~ ~ Plastic GOLD PLATING 42 ALLOY 0.9g LEAD TREATMENT LEAD MATERIAL PACKAGE WEIGHT 0.3 M 1.27 9.2 10.3 12.2 ± 0.1 H PACKAGE MATERIAL V 6.1 ~ 2.5 0.46 0.3 A 1.2 2.5 8.4 (For the first pin only) 0.5 PACKAGE STRUCTURE B 5.7 D B' C 1 8 11.6 16 9 2.5 2-R0.5 9. The notches on the bottom of the package are used only for directional index, they must not be used for reference of fixing. 8. The thickness of the cover glass is 0.75mm, and the refractive index is 1.5. 7. The tilt of the effective image area relative to the bottom “C” is less than 50µm. The tilt of the effective image area relative to the top “D” of the cover glass is less than 50µm. 6. The height from the bottom “C” to the effective image area is 1.41 ± 0.10mm. The height from the top of the cover glass “D” to the effective image area is 1.94 ± 0.15mm. 5. The rotation angle of the effective image area relative to H and V is ± 1°. 4. The center of the effective image area relative to “B” and “B'” is (H, V) = (6.1, 5.7) ± 0.15mm. 3. The bottom “C” of the package, and the top of the cover glass “D” are the height reference. 2. The two points “B” of the package are the horizontal reference. The point “B'” of the package is the vertical reference. 1. “A” is the center of the effective image area. 16pin DIP (450mil) 9.5 11.4 ± 0.1 3.1 Unit: mm 3.35 ± 0.15 1.27 3.5 ± 0.3 0° to 9° 0.25 11.43 Package Outline ICX254AL