PMW3389DM-T3QU: Optical Gaming Navigation Chip

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Description :

PMW3389DM-T3QU is PixArt Imaging’s high end corded gaming navigation chip with illumination source in a 16 pin molded lead-frame DIP package.

Key Features

  • 16 pin molded lead-frame DIP package with 850nm illumination source.
  • Enhanced programmability
    • Lift detection options
      • Manual lift cut off calibration
      • 2mm or 3mm setting
    • Selectable resolutions up to 16000CPI with 50CPI step size
    • Angle snapping
    • Angle tunability
  • Resolution error of 1% (typical) at 5000CPI up to 200ips.
  • High speed motion detection 400ips (typical) and acceleration 50g (max).
  • Self –adjusting variable frame rate for optimum performance
  • Internal oscillator — no clock input needed
  • Four wire serial port interface (SPI)
  • Motion interrupt output

Key Parameters

Power supply RangeVDD: 1.8V – 2.1V VDDIO: 1.8V – 3.6V
Lens Magnification1:1
Interface4 wire Serial Port Interface (SPI)
Typical Operating Current @ VDD = 1.9V Note: includes LED currentRun: 21mA Rest1: 3.1mA Rest2: 0.06mA Rest3: 0.03mA Power Down: 10uA
Resolution (cpi)Up to 16000
Tracking Speed (ips)400 (typical)
Acceleration (g)50 (max)
Package Size (mm)10.90×16.20×5.01


  • Wired Optical gaming mice

  • Integrated input devices

Chip Overview :

The PMW3389DM is an optical navigation chip targeted for high-end corded gaming mouse. It contains a picture element array as Image Acquisition System (IAS), a Digital Signal Processor (DSP), a four wire serial port, a power control circuit and built-in LED driver integrated with IR LED in a package as shown in the block diagram. The chip measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement. The IAS acquires microscopic surface images via the lens and illumination system. These images are processed by the DSP to determine the direction and distance of motion. The DSP calculates the Δx and Δy relative displacement values. An external microcontroller reads the Δx and Δy information from the chip serial port. The microcontroller then translates the data into USB, or RF signals before sending them to the host PC or game console.

Pin Definitions :

Reference Schematics Diagram :

Farees Ahmed

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