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DLPLCRDC4422EVM: Feasibility of use

FRANK1
Expert 7815 points
Part Number: DLPLCRDC4422EVM
Other Parts Discussed in Thread: DLPDLCR660TEVM, , DLP660TE, DLPC4422

Hi Sir,

I bought TI's DLPDLCR660TEVM and DLPLCRDC4422EVM,

I have some queries about their use together.

How precision can the mirror angle of DLPDLCR660TEVM be controlled,

In addition, for example, when the mirror angle is changed from horizontal to horizontal to 1 degree, what kind of input image should be prepared?

If our product connects the binary input image to DLPLCRDC4422EVM and PC and inputs the above products, the angle can be changed to the mirror. Is this correct?

Thanks.

Regards,

  • 0
    TI__Intellectual 2290 points

    Hello Frank,

    DMDs are bi-stable devices; they have 2 stable positions in operation -- on and off.  There is no incremental control of the mirror angle; it is either "on" or "off".  There is also a non-operational "flat" state that is used during power down.

    For more information on how DMDs work, please see this document: DMD 101: Introduction to Digital Micromirror Device (DMD) Technology (Rev. B)

    Please note that the DLP660TE DMD is "bottom illuminated"; the on state is landed on the bottom edge, and the off state is landed on the side.  This is shown in the datasheet:

    The DLPC4422 is a controller used for display applications.  It accepts video data and converts it into the sequence of patterns necessary to display a color video image.  These applications do not offer individual pixel control or control over the timing of the individual mirror movements.. 

    If you need a controller that allows you to control the individual pixel patterns and when each pattern is displayed, you will need to use an Advanced Light Control chipset: Advanced light-control chipsets .  There are a number of "ALC" solutions offering various array sizes, support for various wavelengths, and options for loading patterns and control of the pattern display.

    Regards,
    Gary