MMA7261Q Freescale Semiconductor, MMA7261Q Datasheet
MMA7261Q
Specifications of MMA7261Q
Available stocks
Related parts for MMA7261Q
MMA7261Q Summary of contents
Page 1
... Technical Data ±2.5g - 10g Three Axis Low-g Micromachined Accelerometer The MMA7261QT low cost capacitive micromachined accelerometer features signal conditioning, a 1-pole low pass filter, temperature compensation and g-Select which allows for the selection among 4 sensitivities. Zero-g offset full scale span and filter cut-off are factory set and require no external devices ...
Page 2
... Although the Freescale accelerometer contains internal 2000 V ESD protection circuitry, extra precaution must be taken by the user to protect the chip from ESD. A charge of over 2000 volts can accumulate on the human body or associated test equipment. A charge of this magnitude can MMA7261QT Clock Oscillator ...
Page 3
... Hz — 150 — Hz — 4.7 — mVrms μg/ — 350 — — 1.0 2.0 ms — 0.5 2.0 ms — 6.0 — kHz — 3.4 — kHz — 11 — kHz +0.25 — V –0.25 DD –1.0 — +1.0 %FSO — — 5.0 % -GND. DD MMA7261QT ...
Page 4
... Acceleration Figure 3. Simplified Transducer Physical Model MMA7261QT 4 PRINCIPLE OF OPERATION g-Select The g-Select feature allows for the selection among 4 sensitivities present in the device. Depending on the logic input placed on pins 1 and 2, the device internal gain will be changed allowing it to function with a 2 ...
Page 5
... QFN part. This could lead to ground shorting to the accelerometer flag. POWER SUPPLY Accelerometer to Microcontroller to decouple the power DD may cause the DD C.To ensure ° C ensure V line has the ability ° DD pin. If output signal does not assert itself, DD pin of the device should be DD Figure MMA7261QT ...
Page 6
... QFN Package Top View X @ +1g = 2.13 V OUT 1.65 V OUT 1.65 V OUT 1.65 V OUT Y @ +1g = 2.13 V OUT 1.65 V OUT * When positioned as shown, the Earth’s gravity will result in a positive 1g output. MMA7261QT 6 DYNAMIC ACCELERATION + STATIC ACCELERATION X @ -1g = 1.17 V OUT 1.65 V OUT ...
Page 7
... All dimensions are in mm. Figure 7. PCB Footprint for 16-Lead QFN, 6x6 mm for Consumer Grade Products and Applications Do not solder down flag and 4 corner ground pads on the package for consumer application Do not place any top metal patterns or via structures beneath the package MMA7261QT 7 ...
Page 8
... Signal traces with 0.1mm width and Package Pad 0.50 mm 0.55 mm Cu: 0.55 x 0.50 mm sq. Figure 8. NSMD Solder Mask Design Guidelines MMA7261QT 8 PCB DESIGN GUIDELINES min. 0.5mm length for all PCB land pad near package are recommended as shown in Figure 9 ...
Page 9
... Sensors Freescale Semiconductor PACKAGE DIMENSIONS CASE 1622-02 ISSUE B 16-LEAD QFN PAGE MMA7261QT 9 ...
Page 10
... MMA7261QT 10 PACKAGE DIMENSIONS CASE 1622-02 ISSUE B 16-LEAD QFN PAGE Sensors Freescale Semiconductor ...
Page 11
... Sensors Freescale Semiconductor PACKAGE DIMENSIONS CASE 1622-02 ISSUE B 16-LEAD QFN PAGE MMA7261QT 11 ...
Page 12
... RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see http:/www.freescale.com or contact your Freescale sales representative. For information on Freescale’s Environmental Products program http://www.freescale.com/epp. MMA7261QT Rev. 3 09/2007 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products ...