ADNS-3090 High-Performance Optical Mouse Sensor
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ADNS-3090 (pdf) |
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ADNS-3090 High-Performance Optical Mouse Sensor Data Sheet The ADNS-3090 is a high performance addition to Avago Technologies’ popular ADNS family of optical mouse sensors. The ADNS-3090 is based on a new, faster architecture with improved navigation. The sensor is capable of sensing high speed mouse motion - up to 60 inches per second and acceleration up to 20g for increased user precision and smoothness. The ADNS-3090 along with the ADNS-2120-001 trim lens, ADNS-2220-001 assembly clip and HLMP-ED80-XX000 form a complete, compact optical mouse tracking system. There are no moving parts, which means high reliability and less maintenance for the end user. In addition, precision optical alignment is not required, facilitating high volume assembly. The sensor is programmed via registers through a four-wire serial port. It is packaged in a 20-pin staggered dual inline package DIP . Theory of Operation The ADNS-3090 is based on Optical Navigation Technology, which measures changes in position by optically acquiring sequential surface images frames and mathematically determining the direction and magnitude of movement. It contains an Image Acquisition System IAS , a Digital Signal Processor DSP , and a four-wire serial port. 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 and relative displacement values. An external microcontroller reads the and information from the sensor serial port. The microcontroller then translates the data into PS2 or USB signals before sending them to the host PC or game console. x High speed motion detection up to 60 ips and 20g x Enhanced architecture for greatly improved optical navigation technology x Programmable frame rate over 6400 frames per second x SmartSpeed self-adjusting frame rate for optimum performance x Serial port burst mode for fast data transfer x 1800 cpi or 3500 cpi selectable resolution x Single volt power supply x Four-wire serial port along with Chip Select, Power Down, and Reset pins x Mice for game consoles and computer games x Mice for desktop PC’s, Workstations, and portable PC’s x Trackballs x Integrated input devices Pinout Pin Name MISO SCLK MOSI LED_CTRL RESET OSC_OUT GUARD 10 OSC_IN 11 NC 12 OPTP 13 REFC 14 REFB 15 VDD3 16 GND 17 VDD3 18 NC 19 GND 20 NC Description Chip select active low input Serial data output Master In/Slave Out Serial clock input Serial data input Master Out/Slave In LED control output Reset input Power down active low input Oscillator output Oscillator GND for PCB guard optional Oscillator input No connect to VDD3 Reference capacitor Reference capacitor Supply voltage Ground Supply voltage No connect Ground No connect Figure Package outline drawing top view Figure Package outline drawing CAUTION It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD. Overview of Optical Mouse Sensor Assembly 2D Assembly Drawing of ADNS-3090 Shown with ADNS-2120-001, ADNS-2220-001 and HLMP ED80-XX000. Avago Technologies provides an IGES file drawing describing the base plate molding features for lens and PCB alignment. The components interlock as they are mounted onto defined features on the base plate. The ADNS-3090 sensor is designed for mounting on a through hole PCB, looking down. There is an aperture stop and features on the package that align to the lens. The ADNS-2120-001 trim lens provides optics for the imaging of the surface as well as illumination of the surface at the optimum angle. Features on the lens align it to the sensor, base plate, and clip with the LED. The lens also has a large round flange to provide a long creepage path for any ESD events that occur at the opening of the base plate. The ADNS-2220-001 clip holds the LED in relation to the lens. The LED must be inserted into the clip and the LED’s leads formed prior to loading on the PCB. The clip interlocks the sensor to the lens, and through the lens to the alignment features on the base plate. The HLMP-ED80-XX000 LED is recommended for illumination. If used with the bin table, sufficient illumination can be guaranteed. |
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