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LM9833: Compatibility with FR12F-J03 Canon contact image sensor (CIS)?

Part Number: LM9833

Hi,

While looking through the datasheet of the LM9833, it says that it is "compatible with a wide range of color linear CCDs and Contact Image Sensors (CIS)." However, the datasheet doesn't list what qualities/parameters of the LM9833 determine compatibility with CIS modules.

I was wondering:

1) What criteria I should be looking at to determine whether a CIS is compatible with the LM9833 or not

2) In particular if the the FR12F-J03 Canon CIS (datasheet here) is compatible with the chip.

Thank you!

- Eurah

  • Hi Eurah,

    I am moving your post to the Imaging AFE forum where the device LM9833 is supported.

     

    Best Regards


    Praveen Aroul

  • In reply to Praveen Aroul:

    Hi Eurah

    The LM9833 could work with that sensor. Key parameters to consider are the necessary sample rate (4 MHz) and the ability to capture CIS waveforms with pixel counts up to 10296.

    The LM9833 can sample a single input at up to 6 MSPS and can support line lengths up to 16383.

    However the LM9833 is a highly integrated device intended to provide a complete scanning solution from sensor to USB1.1 interface. This level of integration makes the device challenging to design around and the USB1.1 interface will limit data throughput.

    A better choice would be the LM98714. This also has the needed capabilities to support that sensor, and when interface to an FPGA or other data processing device can give much better data throughput.

    Please take a look at the LM98714 datasheet and see if it will meet your needs.

    Best regards,

    Jim B

  • In reply to Jim Brinkhurst84999:

    Jim,

    I was wondering if there were any example circuits or components list need to use the LM9833. I want to be able to integrate the LM9833 into scanning a document and have it read by a linux machine (similar to a Raspberry Pi).

    I also looked at the LM98714 that you suggested above, but it seems it does not have all the capabilities that the LM9833 does (i.e. motor control, illumination control, ext). Is this correct?
  • In reply to Isaac Fenta:

    Hi Isaac

    Support for this device is very limited.

    I am attaching all of the hardware and software (Windows 9x based) support information I am aware of.

    This information is provided as-is.

    This device was released a long time and and those involved in the original hardware/software/firmware development at National Semiconductor are no longer available.

    /cfs-file/__key/communityserver-discussions-components-files/239/LM9833-Tools-Package.zip

    Best regards,

    Jim B

  • In reply to Isaac Fenta:

    Jim,

    First thank you for the files you provided me for the LM9833; it was really helpful. I have a few questions on this:

    1. How do I program the LM9833 to control the lights, motors and output.

    2. In the schematic, there are circles drawn around different components. What does that represent?

    3. Do you happen to have a BOM for the schematic provided? I want to make sure the HDR and J components are just header pins used to test.

    Also, asking again about the LM98714, do you have other chipsets that go along with this to make a complete solution similar to the LM9833? If the LM9833 is really old, I don't want to incorporate it into a product and then a few years later it won't be a chip you can purchase anymore. I want to cover all my bases to make sure I get the right chipset for my solution. I need to be able to scan a document at about 8ppm and the chipset should send out a .png file to my computer. 

  • In reply to Jim Brinkhurst84999:

    Hi Jim,

    Pinging this thread again. Is there a chance you can answer my questions below?

    1. How do I program the LM9833 to control the lights, motors and output.

    2. In the schematic, there are circles drawn around different components. What does that represent? There are also some TBD components. What are their values?

    3. Do you happen to have a BOM for the schematic provided?

    Also, asking again about the LM98714, do you have other chipsets that go along with this to make a complete solution similar to the LM9833? If the LM9833 is really old, I don't want to incorporate it into a product and then a few years later it won't be a chip you can purchase anymore. I want to cover all my bases to make sure I get the right chipset for my solution. I need to be able to scan a document at about 8ppm and the chipset should send out a .png file to my computer. 

  • In reply to Isaac Fenta:

    Hi Isaac

    1. All of the software tools and drivers originally developed to support the LM9833 device are obsolete and not supported on current versions of the Windows OS. For that reason and the age of the device I discourage adoption of this device for your new design.
    2. Those circles indicate added default connection wires that can be added on the circuit board design after other layout is complete. See the note in the circle at lower right which states: "Note: After PCB layoutis complete, add default jumpers across header pins on bottom of board. When laying out board, make sure you don't route through adjacent pins on bottom layer Default jumper"
    3. I have attached the BOM. /cfs-file/__key/communityserver-discussions-components-files/239/LM9833-BOM-ROHS-_2D00_-Public.xls

    There aren't any standard chipsets to accomplish what you are looking for. Each application is somewhat different and customers develop their own solution for motor and lamp control and data processing.

    Best regards,

    Jim B

  • In reply to Jim Brinkhurst84999:

    Hi Jim,

    Thanks for the response. 

    1. Do you know what OS would work with the drivers (Windows XP, 2000, ext)? Would the drivers work on Linux based systems like Jessie/Debian/Ubuntu?

    2. Does TI have any chipsets that does image processing and send out the image via USB that I can use in conjunction with the LM98714? Or are they separate chips? Looking at the LM98714 system block diagram that is all I would need extra besides a microcontroller to control the lights and motors.

  • In reply to Isaac Fenta:

    Hi Isaac

    1. The documentation I've found states the LM9833 software/drivers were developed for Windows 98 and 2000. I don't have either of these platforms available to me, so cannot confirm in either case.
    2. I am not aware of any image processing ICs or chip-sets (TI or other vendors) that can directly interface with the LM98714 and send out the image data via USB.

    Best regards,

    Jim B

  • In reply to Jim Brinkhurst84999:

    Jim,

    It's sad we cannot use the LM9833 as easily, so I guess we will move forward with the LM98714 using the datasheet TI provides. You have been a great help to help my company move forward in our project. Thank you for all the help you have provided us.