SUB clock driver circuit

Hello,

I don't understand the SUB Clock Driver circuit on sheet 6 of AFE schematics (Rev. C; Drawing Number 02_051354). Could somebody help me?

What kind of signal (or a level) comes out of SUBOUT (pin 18)? I wasn't able to find anything about this pin in the documentation of MN34906BL. Is this a clock signal generated on the substrate? If so, then why is it going in the transistor pair? What's the purpose of the MOSFET driver (U6) and why is it controlled by ADDI9036? What is the final clock frequency that drives the SUB pins (15 and 16)?

I am planning on using a progressive scan CCD image sensor from Sony. At this point driving the image sensor SUB pin is what bothers me the most. Also, this particular image sensor doesn't have a SUBSW pin (which is controlled by a GPIO on ADDI9036) a opposed to MN34906BL. There's a typical system block diagram on page 18, Figure 11 In the datasheet of ADDI9036. What's behind the SUB DRIVER block?

Martin Botsov

  • 0
    •  Analog Employees 
    on Dec 11, 2020 1:53 PM 2 months ago

    The ADDI9036 was designed to work with the MN34906BL sensor and it might not be compatible with the progressive scan CCD sensor from Sony. Please contact local sales support for this issue since some of the required information can be provided only after signing a NDA.

  • Dear ACozma,

    Thank you for your reply. We bought our ToF kit directly from Arrow. Therefore, we have no idea whom to contact locally (in Bulgaria) for further technical assistance. Also, I've had no so pleasant experience contacting local sales representatives and asking for technical details and other information. They don't like it. They just want to sell. If I am not making a purchase, then I am not an interest to them.

    Could you please guide me to a contact that can potentially provide the information I am looking for?

    Signing an NDA is not a problem.

    Martin

  • 0
    •  Analog Employees 
    on Jan 6, 2021 7:02 AM 1 month ago in reply to mocuZ

    Hi Martin,

    Sorry for the delay in the reply. Let me check internally to see what's the best way to approach this and I'll get back to you by tomorrow.

    Regards,

    Andrei

  • 0
    •  Analog Employees 
    on Jan 6, 2021 7:18 AM 1 month ago in reply to ACozma

    Hi Martin,

    Is there a specific reason why you don't want to use the MN34906BL?

    Regards,

    Andrei

  • 0
    •  Analog Employees 
    on Jan 7, 2021 10:07 AM 1 month ago in reply to ACozma

    Hi Martin,

    After some more investigation the conclusion is that it's not possible to interface the ADDI9036 with the Sony CCD sensor. Even if it would be possible to solve the physical level issues there are some limitations in the way the ADDI9036 handles the sensor data which will prevent the system to work.

    The recommendation is to use the MN34906BL sensor.

    Regards,

    Andrei

  • The main concern is higher frame rate in the same optical format. Some CCD sensors from Sony can achieve up to 120 fps in 1/3" optical format. The image sensor from Panasonic is capable of 30 fps only. I have not been able to find alternative sensors from Panasonic with higher frame rate in the same optical format.

    Andrei, are there alternative CCD sensors in the 1/4" or preferably 1/3" optical format besides the MN34906BL? How about MN39143AT?