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DLP4500 vs DLP4501

Harvey Silverman
Prodigy 30 points
Other Parts Discussed in Thread: DLP4501, DLP4500, DLPC6401, DLPC350

I see that the DLP4500 is aimed for advanced light control and the DLP4501 is for video.  However the optical engine that is quite reasonable for our purpose has the 4501 on it, although we need to send in bit frames as fast as possible.  I cannot seem to ascertain the wiring diagrams for both chips to compare to see if the 4501 is throttled down relative to the 4500.  If one could ( magically) design and build our own interface, would the 4501 have the same capabilities as does the 4500?  We have a lot of design capability here and are thinking along these lines, but would like to start with one of the available and low-cost light engines that you recommend from China.

  • 0
    TI__Mastermind 30600 points
    Hi Harvey,

    For proper use and access to all the features, the DLP4500 needs to use a DLPC350. The DLP4501 will not be able to support the high bit rate patterns using the DLPC6401 controller and it is not possible to use a DLP4501 with the DLPC350.

    I hope that answers your question,
    Paul
  • 0 in reply to Paul Goedeke
    TI__Mastermind 30600 points
    From Harvey:

    Thanks Paul for the information. However, I was also asking whether, if I happened to design my own driver system independent of the TI special interface chips, does the 4501 have the capability of doing the fast pattern mode? That is, has TI throttled down the 4501 so it cannot operate -- when appropriately driven -- at the potential pattern speed?
  • 0 in reply to Paul Goedeke
    TI__Mastermind 30600 points
    Hi Harvey,

    These devices are similar but not identical. If you look at the timing requirements tables (Table 6-7) in the datasheets, you see that the devices could operate at similar speeds.

    However, only the DLP4500 will operate at the high bit-rate speeds as advertised, so long as a DLPC350 is used in conjunction with it. Under no other circumstances (custom controller) is performance of the device guaranteed.

    Thanks,
    Paul