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ADNS-3000 low power optical mouse sensor data sheet description the pixart imaging ADNS-3000 is a low power, small form factor optical mouse sensor. it has a new low-power architecture and automatic power management modes, making it ideal for battery, power-sensitive applications C such as cordless input devices. the ADNS-3000 is capable of high-speed motion detec- tion C up to 30 ips and 20 g. in addition, it has an on-chip oscillator and requires an external resistor to set the led current. the ADNS-3000 along with the adns-5110-00 1 lens, or adns-5120-002 trim lens and hsdl-4261 ir led or hlmp-eg3e-xxxxx red led form a complete and compact mouse tracking system. there are no moving parts and this translates to 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 housed in an 8-pin staggered dual in-line package (dip). features ? low power architecture ? small form factor ? programmable periods / response times and downshift times from one mode to another for the power-saving modes ? high speed motion detection up to 30 ips and 20 g ? external interrupt output for motion detection ? internal oscillator C no clock input needed ? selectable resolution of up to 2000 cpi ? operating voltage: as low as 1.7 v ? four-wire serial port interface applications ? optical mice and optical trackballs ? integrated input devices ? battery-powered input devices all rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. pixart imaging inc. e-mail: fae_service@pixart.com.tw
2 pinout of ADNS-3000 optical mouse sensor pin name input/ output description 1 miso o serial data output (master in/slave out) 2 led i led illumination 3 motion o motion interrupt output (default active low, edge triggered) 4 ncs i chip select (active low input) 5 sclk i serial clock 6 gnd i ground 7 vdd i supply voltage 8 mosi i serial data input (master out/slave in) figure 1. package outline drawing (top view) theory of operation the ADNS-3000 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. the ADNS-3000 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 dx and dy relative dis- placement values an external microcontroller reads and translates the dx and dy informa tion from the sensor serial port into ps2, usb, or rf signals before sending them to the host pc. item marking remarks product number a3000 date code xyywwz x = subcon code yyww = date code z = sensor die source lot code vvv numeric 8 7 6 5 4 3 2 1 lot code product number date code all rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. pixart imagi ng inc. e-mail: fae_service@pixart.com.tw pix a rt imaging inc. ADNS-3000 low power optical mouse sensor 3 figure 2. package outline drawing caution: it is advised that normal static precautions be taken in handling and assembling of this component to prevent damage and/or degradation which may be induced by esd. clear optical path pin 1 protective kapton tape 4.55 0.179 3.92 0.154 ? 0.70 0.028 ? 4.12 0.162 9.90 0.390 lead offset 1.00 0.039 lead pitch 2.00 0.079 lead width 0.50 0.020 lot code date code product number pin 1 features for illustration only a a 9.10 0.358 12.85 (at shoulder) 0.506 12.85 0.50 (at lead tip) 0.506 0.020 3.72 0.146 3.50 0.138 5.15 0.203 90 3 q section a-a ( 2.74 ) 0.108 ( 0.04 ) 0.002 notes: 1. dimensions in millimeter / inches. 2. dimensional tolerance: 0.1mm. 3. coplanarity of leads: 0.1mm. 4. lead pitch tolerance: 0.15mm. 5. non-cumulative pitch tolerance: 0.15mm. 6. angular tolerance: 3 q 7. maximum flash: 0.2mm. 8. brackets () indicate reference dimension. 9. document number: led_spc_8c_pkg_002 all rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. pixart imag ing inc. e-mail: fae_service@pixart.com.tw pix a rt imaging inc. ADNS-3000 low power optical mouse sensor 4 overview of optical mouse sensor assembly pixart imaging provides an iges fi le drawing de scribing the base plate molding features for lens and pcb align- ment. the ADNS-3000 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-5110-001 and adns-5120-002 lens provides optics for the imaging of the surface as well as the illumination of the surface at the optimum angle. features on the lens align, base it to the sensor plate, and clip with the led. the led clip holds the led in relation to the lens. the led must be inserted into the clip and the leds leads formed prior to loading on the pcb. the leds recommended for illumination include, hsdl-4261 ir led hlmp-eg3e-xxxxx red led. figure 3. recommended pcb mechanical cutouts and spacing notes: 1. dimensions in millimeter/inches 2. view from component side of pcb (or top view of mouse) 26 1.024 25.00 0.984 2x 24.15 0.951 2x 14.94 0.588 14.5 0.571 13.06 0.514 pin 1 0 optical center optional hole for alignment post if used clear zone 0 0.80 0.031 10x ? 3.00 0.118 ? 2.00 0.079 3x 1.00 0.039 0.383999 0.015118 1.37 0.054 2.25 0.089 5.02 0.198 7.56 0.298 10.35 0.407 11.22 0.442 12.60 0.496 12.9 0.508 0.3 0.012 6.290362 0.247652 all rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. pixart imaging inc. e-mail: fae_service@pixart.com.tw pix a rt imaging inc. ADNS-3000 low power optical mouse sensor 5 note: a C distance from object surface to lens reference plane b C distance from object surface to sensor reference plane figure 5. distance from lens reference plane to tracking surface (z) important note: pin 1 of sensor should be located nearest to the led figure 4. 2d assembly drawing of ADNS-3000 (top and side view) pin 1 33.45 1.317 13.10 0.516 a a led clip led lens sensor pcb alignment post (optional) base plate section a C a 10.60 0.417 0.05 0.002 2.40 0.094 7.45 0.293 gap between sensor package and top of pcb s ensor s urface l ens r eference plane l ens b a 6.87 0.271 2.40 0.094 all rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. pixart imaging inc. e-mail: fae_service@pixart.com.tw pix a rt imaging inc. ADNS-3000 low power optical mouse sensor 6 pcb assembly considerations 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. this sensor package is only qualifi ed for wave-solder process. 5. wave solder the entire assembly in a no-wash solder process utilizing solder fi xture. the solder fi xture 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 fi xture should be designed to expose the sensor leads to solder while shielding the optical aperture from direct solder contact. 6. place the lens onto the base plate. 7. remove the protective kapton tape from optical aperture of the sensor. care must be taken to keep contaminants from entering the aperture. recommend not to place the pcb facing up during the entire mouse assembly process. recommend to hold the pcb fi rst vertically for the kapton removal process. 8. insert pcb assembly over the lens onto the base plate aligning post to retain pcb assembly. the sensor aperture ring should self-align to the lens. figure 7. block diagram of ADNS-3000 optical mouse 9. the optical position reference for the pcb is set by the base plate and lens. note that the pcb motion due to button presses must be minimized to maintain optical alignment. 10. install mouse top case. there must be a feature in the top case to press down onto the pcb assembly to ensure all components are interlocked to the correct vertical height. customer supplied base plate with recommended alignment features per iges drawing adns-5110-001 customer supplied pcb ADNS-3000 (sensor) led clip led important note: ir led is recommended for lower power consumption. figure 6. exploded view of assembly ADNS-3000 power and control led drive image array dsp oscillator vdd led gnd serial port and registers ncs sclk motion miso mosi all rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. pixart imag ing inc. e-mail: fae_service@pixart.com.tw pix a rt imaging inc. ADNS-3000 low power optical mouse sensor 7 figure 8a. schematic diagram of the mouse (cordless application) [ $ $ % d w w h u \ 9 9 5 h j x o d w r u % o r f n = ( q f r g h u & |