AN3109

Sensors

8

Freescale Semiconductor

APPENDIX 5

Figure 18. Orientation and Output Values for MMA7260QT, MMA6270QT and MMA6280QT

Figure 19. Orientation and Output Values for MMA7261QT

STATIC ACCELERATION

Direction of Earth’s gravity field.*

XOUT@ 0g = 1.65 V

YOUT @ -1g = 0.85 V

ZOUT @ 0g = 1.65 V

XOUT @ -1g = 0.85 V

YOUT @ 0g = 1.65 V

ZOUT @ 0g = 1.65 V

XOUT @ 0g = 1.65 V

YOUT @ +1g = 2.45 V

ZOUT @ 0g = 1.65 V

XOUT @ +1g = 2.45 V

YOUT @ 0g = 1.65 V

ZOUT @ 0g = 1.65 V

* When positioned as shown, the Earth’s gravity will result in a positive 1g output.

Top View

Side View

XOUT @ 0g = 1.65 V

YOUT @ 0g = 1.65 V

ZOUT @ +1g = 2.45 V

XOUT @ 0g = 1.65 V

YOUT @ 0g = 1.65 V

ZOUT @ -1g = 0.85 V

STATIC ACCELERATION

Direction of Earth’s gravity field.*

XOUT@ 0g = 1.65 V

YOUT @ -1g = 1.17 V

ZOUT @ 0g = 1.65 V

XOUT @ -1g = 1.17 V

YOUT @ 0g = 1.65 V

ZOUT @ 0g = 1.65 V

XOUT @ 0g = 1.65 V

YOUT @ +1g = 2.13 V

ZOUT @ 0g = 1.65 V

XOUT @ +1g = 2.13 V

YOUT @ 0g = 1.65 V

ZOUT @ 0g = 1.65 V

* When positioned as shown, the Earth’s gravity will result in a positive 1g output.

Top View

Side View

XOUT @ 0g = 1.65 V

YOUT @ 0g = 1.65 V

ZOUT @ +1g = 2.13 V

XOUT @ 0g = 1.65 V

YOUT @ 0g = 1.65 V

ZOUT @ -1g = 1.17 V