DescriptionThe ADNS-3080 is a high performance addition to Avago Technologies’ popular ADNS family of optical mouse sensors. The ADNS-3080 is based on a new, faster architecture with improved navigation. The sensor is capable of sensing high speed mouse motion - up to 40 inches per second and acceleration up to 15g – for increased user precision and smoothness. The ADNS-3080 along with the ADNS-2120 (or ADNS-2120-001) lens, ADNS-2220 (or 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, facilitat-ing 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 OperationThe ADNS-3080 is based on Optical Navigation Technol-ogy, which measures changes in position by optically acquiring sequential surface images (frames) and math-ematically 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 ∆x and ∆y relative dis-placement values. An external microcontroller reads the ∆x and ∆y informa-tion 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. Features• High speed motion detection – up to 40 ips and 15g• New architecture for greatly improved optical navigation technology • Programmable frame rate over 6400 frames per second• SmartSpeed self-adjusting frame rate for optimum performance • Serial port burst mode for fast data transfer• 400 or 1600 cpi selectable resolution• Single 3.3 volt power supply • Four-wire serial port along with Chip Select, Power Down, and Reset pinsApplications• Mice for game consoles and computer games• Mice for desktop PC’s, Workstations, and portable PC’s• Trackballs• Integrated input devicesADNS-3080High-Performance Optical Mouse SensorData Sheet2PinoutGNDNCGNDVDD3REFCVDD3NCOPTPNC REFB NCSMISOSCLKGUARDLED_CTRLRESETNPDOSC_OUTMOSIOSC_INTOP VIEWPINOUTA3080 XYYWWZ 1342567891020181719161514131211Figure 1. Package outline drawing (top view)Pin Name Description1 NCS Chip select (active low input)2 MISO Serial data output (Master In/Slave Out)3 SCLK Serial clock input4 MOSI Serial data input (Master Out/Slave In)5 LED_CTRL LED control output6 RESET Reset input7 NPD Power down (active low input)8 OSC_OUT Oscillator output9 GUARD Oscillator gnd for PCB guard (optional)10 OSC_IN Oscillator input11 NC No connect12 OPTP Connect to VDD313 REFC Reference capacitor14 REFB Reference capacitor15 VDD3 Supply voltage16 GND Ground17 VDD3 Supply voltage18 NC No connect19 GND Ground20 NC No connect3Figure 2. Package outline drawingCAUTION: 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.4the 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 illumina-tion. If used with the bin table, sufficient illumination can Figure 3. Recommended PCB mechanical cutouts and spacing 2D Assembly Drawing of ADNS-3080Shown with ADNS-2120, ADNS-2220 and HLMP ED80-XX000.Avago Technologies provides an IGES file drawing de-scribing 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-3080 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 lens provides optics for the imaging of the surface as well as illumination of the surface at Overview of Optical Mouse Sensor Assembly5Figure 4. 2D Assembly drawing of ADNS-3080 (top and side view)NOTE: These new Avago Technologies optical mouse sensors, lenses and clips have different physical configurations that require a different PCB mounting method to optimize the navigation performance.Refer Application Notes AN 5035 for further information.6PCB Assembly ConsiderationsFigure 5. Exploded view drawing 1. Insert the sensor and all other electrical components into PCB. 2. Insert the LED into the assembly clip and bend the leads 90 degrees. 3. Insert the LED/clip assembly into PCB.4. Wave Solder the entire assembly in a no-wash solder process utilizing solder fixture. The solder fixture is needed to protect the sensor during the solder process. It also sets the correct sensor-to -PCB distance as the lead shoulders do not normally rest on the PCB surface. The fixture should be designed to expose the sensor leads to solder while shielding the optical aperture from direct solder contact.5. Place the lens onto the base plate. Customer supplied baseplate with recommended alignment features per IGES drawing.ADNS-2120 (Lens)Customer supplied PCBADNS-3080 (Sensor)ADNS-2220 (Clip)HLMP-ED80-XX000 (LED)Figure 6. Block diagram of ADNS-3080 optical mouse sensorIMAGEPROCESSORREFERENCEVOLTAGEFILTER NODE3.3 V POWERREFBREFCGNDRESONATOR OSC_INOSC_OUTMOSINCSSCLKOPTPVDD3MISOLED_CTRLRESETNPDVOLTAGE REGULATORAND POWER CONTROLSerial PortCTRLOSCILLATOR6. Remove the protective kapton tape from optical aperture of the sensor. Care must be taken to keep contaminants from entering the aperture. During mouse assembly process, it is recommended that the PCB is held vertically when kapton tapes are being removed.7. Insert PCB assembly over the lens onto the base