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DLPC6401 vs DLPC350

Alexey Petrushin
Prodigy 140 points
Other Parts Discussed in Thread: DLPC6401, DLPC350, DLP4500

Hi, 

The DLP4500 can be driven by either DLPC6401 or DLPC350 controller. These controllers have different price while the DMD interface is identical.

In my application only a static image will be loaded to the DMD and a single mirror control is required. Can I use DLPC6401 controller for this application? 

Thank you

Alex

  • 0
    TI__Expert 4720 points

    Hello Alex,

    When you say single mirror control is required, do you mean to say that you need absolute pixel accuracy? As in, you need to know exactly which pixels are on/off? The DLPC6401 and DLPC350 are meant for very different use cases. The DLPC6401 is optimized for traditional video display which uses spatial dithering and gamma corrections for the best video projection possible for the human eye which cannot be turned off. The DLPC350 is designed for a variety of applications in the industrial and medical spaces, which require absolute precision and high-speed operation. The DLPC350 gives complete control over the DMD to turn exact pixels on and off at precise speeds.

    Could you describe your application for me in more detail so that I can help you determine which part fits your needs?

    Best regards,

    Blair

  • 0 in reply to Blair Conner
    Prodigy 140 points

    Hi Blair,

    You are right I need to know the exact state of each pixel. It is photolithography-like application where only monicromic images are loaded to the DMD. I know that the DLPC350 can easily do the job but I am not sure about the DLPC6401. 

    When I control DMD with DLPC6401 and upload a 1-bit bmp file of the same size as the native resolution of DMD will I still have a direct correspondence image pixel - to - DMD pixel. So, for example, having a black image with 100 white dots will I have 100 corresponding pixels turned ON on the DMD?

    Thank you 

    Alex

     

  • 0 in reply to Alexey Petrushin
    TI__Expert 4720 points

    Hi Alex,

    That is not correct. It is not possible to bypass the video processing on the DLPC6401 which means that spatial dithering will be applied to your image. If you need exact pixel mapping you need the DLPC350.

    Best regards,

    Blair