LUPA-4000 CYPRESS [Cypress Semiconductor], LUPA-4000 Datasheet

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LUPA-4000

Manufacturer Part Number
LUPA-4000
Description
4M Pixel CMOS Image Sensor
Manufacturer
CYPRESS [Cypress Semiconductor]
Datasheet
LUPA-4000
Data Sheet
LUPA-4000
4M Pixel
CMOS Image Sensor
Datasheet
Cypress Semiconductor Corporation
3901 North First Street
San Jose, CA 95134
408-943-2600
Contact:
info@Fillfactory.com
Document #: 38-05712 Rev.**(Revision 1.2 )
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LUPA-4000 Summary of contents

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... LUPA-4000 Data Sheet LUPA-4000 4M Pixel CMOS Image Sensor Datasheet Cypress Semiconductor Corporation 3901 North First Street Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) San Jose, CA 95134 408-943-2600 Page ...

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... LUPA-4000 Data Sheet Document history record Issue Date 1.0 August, 2004 1.0 November, 2004 1.1 November, 2004 1.2 December 23, 2004 Cypress Semiconductor Corporation Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) Description of changes Origination Correct bias voltages precharge_bias and Pre_load Updated timing diagrams and timing explanation Added Cypress equivalent part numbers, ...

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... LUPA-4000 Data Sheet TABLE OF CONTENTS 1 PREAMBLE ..........................................................................................................5 1.1 O .........................................................................................................5 VERVIEW 1.2 M ................................................................................................5 AIN FEATURES 1 ...................................................................................................5 ART UMBER 2 SPECIFICATIONS...............................................................................................6 2.1 G ENERAL SPECIFICATIONS 2 LECTRO OPTICAL SPECIFICATIONS 2.2.1 Overview ....................................................................................................6 2.2.2 Spectral response curve .............................................................................7 2.2.3 Photo-voltaic response curve.....................................................................8 2.3 F EATURES AND GENERAL SPECIFICATIONS 2.4 E LECTRICAL SPECIFICATIONS 2.4.1 Recommended operating conditions ........................................................10 3 SENSOR ARCHITECTURE .............................................................................11 3 ...

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... ONDING PADS 6.4 B .........................................................................................44 ONDING DIAGRAM 7 HANDLING AND SOLDERING PRECAUTIONS ........................................45 8 ORDERING INFORMATION ..........................................................................46 APPENDIX A: LUPA-4000 EVALUATION SYSTEM.........................................47 APPENDIX B: FREQUENTLY ASKED QUESTIONS .....................................48 Cypress Semiconductor Corporation Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) (SPI) ..............................................................35 3901 North First Street San Jose, CA 95134 408-943-2600 Page ...

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... Data Sheet 1 Preamble 1.1 Overview This document describes the interfacing and the driving of the LUPA-4000 image sensor. This 4 mega-pixel CMOS active pixel sensor features synchronous shutter and a maximal frame-rate of 15fps in full resolution. The readout speed can be boosted by means of sub sampling and windowed Region Of Interest (ROI) readout. High dynamic range scenes can be captured using the double and multiple slope functionality ...

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... LUPA-4000 Data Sheet 2 Specifications 2.1 General specifications Table 1: General specifications Parameter Specification Pixel 6T-pixel architecture µ µ Pixel size Resolution 2048 x2048 Pixel rate 66 MHz Shutter type Pipelined snapshot shutter Full frame rate 15 frames/second 2.2 Electro-optical specifications 2.2.1 Overview Table 2: Electro-optical specifications ...

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... LUPA-4000 Data Sheet 2.2.2 Spectral response curve QE 40% 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 400 500 Figure 1: Spectral response curve Figure 1 shows the spectral response characteristic. The curve is measured directly on the pixels. It includes effects of non-sensitive areas in the pixel, e.g. interconnection lines. The sensor is light sensitive between 400 and 1000 nm. The peak ...

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... LUPA-4000 Data Sheet 2.2.3 Photo-voltaic response curve 1.2 1 0.8 0.6 0.4 0 20000 40000 Figure 2: Photo-voltaic response curve Figure 2 shows the pixel response curve in linear response mode. This curve is the relation between the electrons detected in the pixel and the output signal. The resulting voltage-electron curve is independent of any parameters. The voltage to electrons conversion gain is 13.5 µ ...

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... LUPA-4000 Data Sheet 2.3 Features and general specifications Table 3: Features and general specifications Feature Specification/Description Full snapshot shutter (integration during read out is possible). Electronic shutter type Windowing (ROI) Randomly programmable ROI read out. Sub-sampling and binning 2:1 subsampling and voltage averaging is possible (only in the X- modes direction) ...

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... LUPA-4000 Data Sheet 2.4 Electrical specifications 2.4.1 Recommended operating conditions Table 4: Recommended operation conditions Symbol Parameter Vaa Power supply column read out module. Va3 Power supply column read out module Vdd Power supply digital modules Voo Power supply output stages Vres Power supply reset drivers ...

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... LUPA-4000 Data Sheet 3 Sensor architecture A schematic drawing of the architecture is given in the block diagram below. The image core consists of a pixel array, one X- and two Y-addressing registers (only one drawn), pixel array drivers and column amplifiers. The image sensor of 2048 * 2048 pixels is read out in progressive scan. One or two output amplifiers read out the image sensor ...

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... LUPA-4000 Data Sheet 3.1 The 6-T pixel To obtain the global shutter feature combined with a high sensitivity and good Parasitic Light Sensitivity (PLS), the pixel architecture given in the figure below is implemented. Vpix Reset Figure 4: 6T-pixel architecture This pixel architecture is designed µm to meet the specifications as described in Tables 1, 2 and 3. ...

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... To obtain a frame rate a 15 frames /sec, one needs 1 output amplifier, working at 66MHz pixel rate or 2 output amplifiers working at 33MHz each (assuming a Row Overhead Time (ROT) of 200nsec). The frame period of the LUPA-4000 sensor can be calculated as follows: Frame period = FOT + (Nr. Lines * (ROT + pixel period * Nr. Pixels) with: FOT: Frame Overhead Time = 5 us. ...

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... LUPA-4000 Data Sheet 3.3 Output amplifier 1 output amplifier working at 66Mpixels/sec is required to bring the whole pixel array of 2048 by 2048 pixels at the required frame rate to the outside world. A second output stage is also foreseen to convert the analog data on-chip by 2 10-bit ADC’s each working at 33 MHz. By having a second output stage working in parallel, the pixel rate can be more relaxed to 33MHz for both output amplifiers ...

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... LUPA-4000 Data Sheet 3.5 Column amplifiers The column amplifiers are designed for minimum power dissipation and minimum loss of signal for this reason multiple biasing signals are needed. The column amplifiers also have the “voltage-averaging” feature integrated. In case of voltage averaging mode, the voltage average between 2 columns is taken and read out ...

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... LUPA-4000 Data Sheet 3.6.1 ADC timing The ADC converts the pixel data on the falling edge of the A clock cycles before this pixel data is at the output of the ADC. This pipeline delay is shown in Figure 6. 3.6.2 Setting of the ADC reference voltages REF_HIGH ~ 2 V REF_LOW ~ 1 V Figure 7: In- and external ADC connections The internal resistor R has a value of approximately 300 Ω ...

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... LUPA-4000 Data Sheet The values of the resistors depend on the value of R between A and A DC_VLOW DC_VHIGH working of the ADC. 3.7 Synchronous shutter In a synchronous (snapshot) shutter light integration takes place on all pixels in parallel, although subsequent readout is sequential. Line number Integration time Figure 8: Synchronous shutter operation Figure 8 shows the integration and read out sequence for the synchronous shutter ...

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... LUPA-4000 Data Sheet Figure 9. Principle of non-destructive readout. Essentially an active pixel array is read multiple times, and reset only once. The external system intelligence takes care of the interpretation of the data. Table 7 summarizes the advantages and disadvantages of non-destructive readout. Table 7: Advantages and disadvantages of non-destructive readout. ...

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... LUPA-4000 Data Sheet An overview of the supplies is given in table 8 and 9. Table 9 summarizes the supplies related to the pixel array signals, where table 8 summarizes the supplies related with all other modules. Name DC Current Max.current Vaa 7mA 50mA Va3 10mA 50mA Vdd 1mA 200mA 20mA ...

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... Data Sheet 3.9.2 Start-up sequence The LUPA-4000 will go in latch up (draw high current) as soon as all power supplies are turned on at the same time. The sensor will come out of latch-up and start working normally as soon being clocked. A power supply with a 400 mA limit is recommended to avoid damage to the sensor ...

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... LUPA-4000 Data Sheet Signal Comment Connect with 10K uni_load_fast Vaa and capacitor of 100 nF to Gnd Connect with 1M uni_load Vaa and capacitor of 100 nF to Gnd Connect with 3 K pre_load Vaa and capacitor of 100 nF to Gnd Connect with 1 M col_load Vaa and capacitor of ...

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... LUPA-4000 Data Sheet 3.10 Pixel array signals The Pixel array of the image sensor requires digital control signals and several different power supplies. This paragraph explains the relation between the control signals and the applied supplies and the internal generated pixel array signals. ...

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... LUPA-4000 Data Sheet Figure 10: Internal timing of the pixel. Levels are defined by the pixel array voltage supplies (For the correct polarities of the signals refer to table 11). The signals in figure 10 are generated from the on chip drivers. These on chip drivers need 2 types of signals to generate the exact type of signal. It needs digital control signals between 0 and 3 ...

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... LUPA-4000 Data Sheet The rise and fall times of the internal generated signals are not very fast (200nsec). In fact they are made rather slow to limit the maximum current through the power supply lines (Vmem_h, Vmem_l, Vres, Vres_ds, Vdd). Current limitation of those power supplies is not required ...

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... LUPA-4000 Data Sheet o Eos_x: end of scan signal output signal, indicating when the end of the line is reached. Is not generated when doing windowing o Eos_y: end of scan signal output signal, indicating when the end of the frame is reached. Is not generated when doing windowing. ...

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... Data Sheet 4 Timing and read out of the image sensor The timing of the LUPA-4000 sensor consists of 2 parts. The first part is related with the control of the pixels, the integration time and the signal level. The second part is related with the readout of the image sensor. As this image sensor is able for full synchronous shutter, integration time and readout can be in parallel or sequential ...

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... LUPA-4000 Data Sheet 4.1 Timing of the pixel array The first part of the timing is related with the timing of the pixel array. This implies the control of the integration time, the synchronous shutter operation and the sampling of the pixel information onto the memory element inside each pixel. ...

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... LUPA-4000 Data Sheet The timing of the pixel array is straightforward. Before the frame is read, the information on the photodiode needs to be stored onto the memory element inside the pixels. This is done by means of the signals Mem_hl, Precharge and Sample. When precharge is activated it serves as a load for the first source follower in the pixel. ...

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... LUPA-4000 Data Sheet 4.2 Read out of the image sensor As soon as the information of the pixels is stored in to the memory element of each pixel, this information can be readout sequentially. As seen in the previous section, integration and readout can also be done in parallel. The readout timing is straightforward and is basically controlled by means of sync and clock pulses ...

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... LUPA-4000 Data Sheet Figure 15: X- and Y-addressing Table 13: Read-out timing specifications Symbol Name a Sync_Y b Sync_Y-Clock_Y Clock_Y-Sync_Y c NoRowSel d Pre_col e f Sh_col Voltage averaging g Sync_X-Clock_X h As soon as a new line is selected, it has to be read out by the output amplifiers. Before the pixels of the selected line can be multiplexed onto the output amplifiers, ...

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... LUPA-4000 Data Sheet figure 15. This is the time to get the data stable from the pixels to the output bus before the output stages. This ROT is in fact lost time and rather critical in a high- speed sensor. Different timings to reduce this ROT are explained in next paragraph. ...

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... LUPA-4000 Data Sheet Pixel 1 dark Figure 17: output signal related to Clock_x signal. From bottom to top: Clock_x, Sync_x and output. The output level before the first pixel is the level of the last pixel of previous line. As soon as Sync_x is high and 1 rising edge of Clock_x occurs, the pixels are brought to the analog outputs ...

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... LUPA-4000 Data Sheet 4.2.2.a Standard timing (200ns) Figure 18: Standard timing for the R.O.T. Only pre_col and Norowsel control signals are required. In this case the control signals Norowsel and pre_col are made active for about 20nsec from the moment the next line is selected. The time these pulses have to be active is related with the biasing resistance Pre_load ...

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... LUPA-4000 Data Sheet 4.2.3 Precharging of the buses This timing mode is exactly the same as the mode without sample and hold, except that the prebus1 and prebus2 signals are activated. It should be noticed that the precharging of the buses can be combined with all of the timing modes discussed above ...

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... LUPA-4000 Data Sheet 4.3 Serial-Parallel-Interface (SPI) The SPI is required to upload the different modes. Table 15 shows the parameters and there bit position Parameter Y-direction Y-address X-voltage averaging enable X-subsampling X-direction X-address Nr output amplifiers DAC When all zeros are loaded into the SPI, the sensor will start at pixel 0,0. The scanning will be from left to right and from top to bottom ...

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... LUPA-4000 Data Sheet 5 Pin list Table list of all the pins and their functionalities. Pad Pin Pin Name Pin Type E1 Input 1 sync_x F1 Testpin 2 eos_x D2 Supply 3 vdd G2 Input 4 clock_x G1 Testpin 5 eos_spi F2 spi_data Input 6 H1 spi_load Input 7 H2 spi_clock Input 8 J2 Ground 9 gndo ...

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... LUPA-4000 Data Sheet Pad Pin Pin Name Pin Type Q7 Input 29 dec_y_load R3 Supply 30 vdd M3 Ground 31 gndd L2 Input 32 prebus1 L3 prebus2 Input 33 Q8 sh_col Input 34 R4 Input 35 pre_col R5 norowsel Input 36 R6 Input clock_y 37 R7 Input sync_y 38 K2 Testpin 39 eos_y_r Q9 Testpin 40 temp_diode_p Q10 Testpin 41 temp_diode_n ...

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... LUPA-4000 Data Sheet Pad Pin Pin Name Pin Type M14 Input 68 ref_high K14 Supply 69 vres_ds J14 vres Supply 70 J15 Supply 71 vpre_l 72 J16 vdd Supply K15 Supply vmem_h 73 K16 Supply vmem_l 74 H15 Input 75 ref_low H16 Input 76 linear_conv G16 Output 77 bit_9 F16 Output ...

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... LUPA-4000 Data Sheet Pad Pin Pin Name Pin Type B6 Input precharge_bias 109 A8 Testpin 110 photodiode A7 Ground 111 gndd B12 Supply 112 vdd A6 Testpin 113 eos_y_l A1 sync_y Input 114 A5 Input clock_y 115 A2 Input norowsel 116 A3 Input 117 volt. averaging B5 Input 118 pre_col ...

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... Data Sheet 6 Geometry and mechanical specifications 6.1 Bare die Pixel array of 2048 x 2048 pixels Pixel 0,0 Figure 21: Die figure of the LUPA-4000 Pixel 0,0 is located at 478 µm from the left side of the die and 1366 µm from the bottom side of the die. Cypress Semiconductor Corporation Contact: info@Fillfactory ...

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... LUPA-4000 Data Sheet 6.2 Package drawing The LUPA-4000 is packaged in a 127-pin PGA package. Figure 22: Package drawing of the LUPA-4000 package Cypress Semiconductor Corporation Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) 3901 North First Street San Jose, CA 95134 408-943-2600 Page ...

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... LUPA-4000 Data Sheet Figure 23: LUPA-4000 package specifications with die Cypress Semiconductor Corporation 3901 North First Street Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) San Jose, CA 95134 408-943-2600 Page ...

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... LUPA-4000 Data Sheet 6.3 Bonding pads The bonding pads are located as indicated below. Figure 24: Placing of the bonding pads on the LUPA-4000 package Cypress Semiconductor Corporation Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) 3901 North First Street San Jose, CA 95134 408-943-2600 Page ...

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... Data Sheet 6.4 Bonding diagram The die is bonded to the bonding pads of the package as indicated below. Figure 25: Bonding pads diagram of the LUPA-4000 package The die will be placed in the package in a way that the center of the light sensitive area will match the center of the package. ...

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... LUPA-4000 Data Sheet 7 Handling and soldering precautions Special care should be given when soldering image sensors with color filter arrays (RGB color filters), onto a circuit board, since color filters are sensitive to high temperatures. Prolonged heating at elevated temperatures may result in deterioration of the performance of the sensor. The following recommendations are made to ensure that sensor performance is not compromised during end-users’ ...

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... LUPA-4000-M Disclaimer The LUPA-4000 is only to be used for non-military applications. A strict exclusivity agreement prevents us to sell the LUPA-4000 to customers who intend to use it for military applications. FillFactory image sensors are only warranted to meet the specifications as described in the production data sheet. Specifications are subject to change without notice. ...

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... APPENDIX A: LUPA-4000 evaluation system For evaluating purposes an LUPA-4000 evaluation kit is available. The LUPA-4000 evaluation kit consists of a multifunctional digital board (memory, sequencer and IEEE 1394 Fire Wire interface) and an analog image sensor board. Visual Basic software (under Win 2000 or XP) allows the grabbing and display of images and movies from the sensor ...

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... LUPA-4000 Data Sheet APPENDIX B: Frequently Asked Questions Q: How does the dual (multiple) slope extended dynamic range mode works? A: Reset pulse Double slope reset pulse Total integration time Figure 27: Dual slope diagram The green lines are the analog signal on the photodiode, which decrease as a result of exposure ...

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... LUPA-4000 Data Sheet Document History Page Document Title: LUPA-4000 4M CMOS Image Sensor Document Number: 38-05712 Rev. ECN No. ** 310396 Cypress Semiconductor Corporation Contact: info@Fillfactory.com Document #: 38-05712 Rev.**(Revision 1.2 ) Issue Date Orig. of Change See ECN SIL (EOD) 3901 North First Street San Jose, CA 95134 ...

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