DLPS081 February   2022 DLP3020-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  Storage Conditions
    3. 6.3  ESD Ratings
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Thermal Information
    6. 6.6  Electrical Characteristics
    7. 6.7  Timing Requirements
    8. 6.8  Switching Characteristics
    9. 6.9  System Mounting Interface Loads
    10. 6.10 Physical Characteristics of the Micromirror Array
    11. 6.11 Micromirror Array Optical Characteristics
    12. 6.12 Window Characteristics
    13. 6.13 Chipset Component Usage Specification
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Micromirror Array
      2. 7.3.2 Double Data Rate (DDR) Interface
      3. 7.3.3 Micromirror Switching Control
      4. 7.3.4 DMD Voltage Supplies
      5. 7.3.5 Logic Reset
      6. 7.3.6 Temperature Sensing Diode
        1. 7.3.6.1 Temperature Sense Diode Theory
      7. 7.3.7 DMD JTAG Interface
    4. 7.4 System Optical Considerations
      1. 7.4.1 Numerical Aperture and Stray Light Control
      2. 7.4.2 Pupil Match
      3. 7.4.3 Illumination Overfill and Alignment
    5. 7.5 DMD Image Performance Specification
    6. 7.6 Micromirror Array Temperature Calculation
    7. 7.7 Micromirror Landed-On/Landed-Off Duty Cycle
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
    3. 8.3 Application Mission Profile Consideration
  9. 9 Power Supply Recommendations
    1. 9.1 Power Supply Sequencing Requirements
      1. 9.1.1 Power Up and Power Down
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Temperature Diode Pins
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
      2. 11.1.2 Device Markings
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Device Handling
    8. 11.8 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.3 Micromirror Switching Control

Once data is loaded onto the DMD, the mirrors switch position (+12° or –12°) based on the timing signal sent to the DMD Mirror and SRAM control logic. The DMD mirrors will be switched from OFF to ON or ON to OFF, or stay in the same position based on control signals DAD_BUS, RESET_STROBE, SAC_BUS, and SAC_CLK, which are coordinated with the data loading by the DLP controller. In general, the DLP controller loads the DMD SRAM memory cells over the DDR interface, and then commands to the micromirrors to switch position.

At power down, the DMD Mirrors are commanded by the DLP controller to move to a near flat (0°) position as shown in Section 9. The flat state position of the DMD mirrors are referred to as the “Parked” state. To maintain long-term DMD reliability, the DMD must be properly “Parked” prior to every power down of the DMD power supplies.