MMA6270Q FREESCALE | Alldatasheet
Document overview
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Technical content
Features
Selectable Sensitivity (1.5 g / 2 g / 4 g / 6 g) Low Current Consumption: 500 µA Sleep Mode: 3 µA Low Voltage Operation: 2.2 V – 3.6 V 6 mm x 6 mm x 1.45 mm QFN High Sensitivity (800 mV/g @1.5 g) Fast Turn On Time Integral Signal Conditioning with Low Pass Filter Robust Design, High Shocks Survivability Pb-Free Terminations Environmentally Preferred Package Low Cost Typical Applications Laptop PC: Freefall Detection, Anti-Theft Cell Phone: Image Stability, Text Scroll, Motion Dialing, E-Compass PDA: Text Scroll Navigation and Dead Reckoning: E-Compass Tilt Compensation Gaming: Tilt and Motion Sensing, Event Recorder Robotics: Motion Sensing Appliances: Vibration Sensing
ORDERING INFORMATION
– 20 to +85°C 98ASA10651D QFN-16, Tube MMA6270QR2 – 20 to +85°C 98ASA10651D QFN-16,Tape & Reel MMA6270Q MMA6270Q: XY AXIS ACCELEROMETER ±1.5 g / 2 g / 4 g / 6 g
16 LEAD
Figure 1. Pin Connections
Figure 2. Simplified Accelerometer Functional Block Diagram
2000 V ESD protection circuitry, extra precaution must be
may be detrimental to its performance. Table 1. Maximum Ratings
- Dropped onto concrete surface from any axis.
Table 2. Operating Characteristics
- For a loaded output, the measurements are observed after an RC filter consisting of a 1.0 kΩ resistor and a 0.1 µF capacitor on VDD-GND.
- These limits define the range of operation for which the part will meet specification.
- Within the supply range of 2.2 and 3.6 V, the device operates as a fully calibrated linear accelerometer. Beyond these supply limits the device
may operate as a linear device but is not guaranteed to be in calibration.
- This value is measured with g-Select in 1.5 g mode.
- The device can measure both + and – acceleration. With no input acceleration the output is at midsupply. For positive acceleration the output
will increase above VDD/2. For negative acceleration, the output will decrease below VDD/2.
- The response time between 10% of full scale Vdd input voltage and 90% of the final operating output voltage.
- The response time between 10% of full scale Sleep Mode input voltage and 90% of the final operating output voltage.
- A measure of the device’s ability to reject an acceleration applied 90° from the true axis of sensitivity.
integrated-circuit accelerometer. using a bulk micromachined cap wafer. is a measure of acceleration. proportional to acceleration. Figure 3. Simplified Transducer Physical Model pull-down to keep it at that sensitivity (800 mV/g). recommended to set g-Select1 and g-Select2 to 1.5 g mode. resume to normal mode of operation. in the analog to digital conversion process. Table 3. g-Select Pin Descriptions
Analog Integrated Circuit Device Data Freescale Semiconductor MMA6270Q MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS DYNAMIC ACCELERATION Top View 16-Pin QFN Package STATIC ACCELERATION Direction of Earth’s gravity field.* XOUT@ 0g = 1.65 V YOUT @ -1g = 0.85 V XOUT @ -1g = 0.85 V YOUT @ 0g = 1.65 V XOUT @ 0g = 1.65 V YOUT @ +1g = 2.45 V XOUT @ +1g = 2.45 V YOUT @ 0g = 1.65 V * When positioned as shown, the Earth’s gravity will result in a positive 1 g output. (For reference only) : Arrow indicates direction of mass movement. Top View Side View XOUT @ 0g = 1.65 V YOUT @ 0g = 1.65 V XOUT @ 0g = 1.65 V YOUT @ 0g = 1.65 V Side View Z direction Top Bottom
Surface mount board layout is a critical portion of the total design. The footprint for the surface mount packages must be the correct size to ensure proper solder connection interface between the board and the package. With the correct footprint, the packages will self-align when subjected to a solder reflow process. It is always recommended to design boards with a solder mask layer to avoid bridging and shorting between solder pads. PACKAGE DIMENSIONS For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. 0.50 6.0 Solder areas Pin 1 ID (non metallic) 4.25 6.0 1.00 0.55 NOTES: ALL DIMENSIONS ARE IN MILLIMETERS. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. THIS DIMENSION APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25MM AND 0.30MM FROM TERMINAL TIP. THIS DIMENSION REPRESENTS TERMINAL FULL BACK FROM PACKAGE EDGE UP TO 0.1MM IS ACCEPTABLE. COPLANARITY APPLIES TO THE EXPOSED HEAT SLUG AS WELL AS THE TERMINAL. RADIUS ON TERMINAL IS OPTIONAL. MINIMUM METAL GAP 0.2MM. (45˚) 16X 0.1 DETAIL M PIN 1 INDEX AREA B C 0.10 C 0.10 A M M (0.203) C 0.1 C 0.08 C SEATING PLANE DETAIL G VIEW ROTATED 90˚ CLOCKWISE (1) (0.5) (0.102) 1.45±0.1 EXPOSED DIE ATTACH PAD 12X M 0.1 C M 0.05 C A B 16X 0.63 0.43 C 0.1 A B VIEW M-M DETAIL M PIN 1 INDEX DETAIL G C 0.1 A B 16X 0.60 0.40 4.24 4.04 4.24 4.04 0.5
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