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1、 MEMSIC MXD6025Q Rev.B Page 1 of 6 2/27/2007 Ultra High Performance 1g Dual Axis Accelerometer with Digital Outputs MXD6025Q FEATURES Ultra Low Noise 0.13 mg/Hztypical RoHS compliant Ultra Low Offset Drift 0.1 mg/ C typical Resolution better than 1 mg Monolithic CMOS IC On chip mixed signal processi
2、ng 50,000 g shock survival rating Low profile LCC package 2.7V to 3.6V single supply No adjustment needed outside APPLICATIONS Automotive Vehicle Security/Active Suspension/ABS Headlight Angle Control/Tilt Sensing Security Gas Line/Elevator/Fatigue Sensing Office Equipment Computer Peripherals/PDAs/
3、Cell Phones Gaming Joystick/RF Interface/Menu Selection/Tilt Sensing MXD6025Q FUNCTIONAL BLOCK DIAGRAMGENERAL DESCRIPTION The MXD6025Q is a low noise, low profile, dual axis accelerometer fabricated on a standard CMOS process. It is a complete sensing system with on-chip mixed mode signal processing
4、. The MXD6025Q measures acceleration with a full-scale range of 1 g and a sensitivity of 25%/g 3V at 25C. It can measure both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity). The MXD6025Q design is based on heat convection and requires no solid proof mass. This elimina
5、tes stiction and particle issues normally found with capacitive based technology, and significantly lowers field failure rate and in-line loss due to handling during assembly. The MXD6025Q provides two digital outputs that are set to 50% duty cycle at zero g acceleration. The maximum noise floor is
6、0.18 mg/Hz allowing signals below 0.5 mg to be resolved at 1 Hz bandwidth and the 3dB rolloff of the device occurs at 8 Hz. The MXD6025Q is available in a hermetically sealed low profile LCC surface mount package measuring 5mm x 5mm x 1.55mm. Information furnished by MEMSIC is believed to be accurat
7、e and reliable. However, no responsibility is assumed by MEMSIC for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of MEMSIC. MEMSIC, Inc. 800 Turnpike S
8、t., Suite 202, North Andover, MA01845, USA Tel: +1 978 738 0900 Fax: +1 978 738 0196 MEMSIC MXD6025Q Rev.A Page 2 of 6 2/27/2007 MXD6025Q SPECIFICATIONS (Measurements 25C, Acceleration = 0 g unless otherwise noted; VDD = 3.0V unless otherwise specified) Parameter Conditions MXD6025Q Units Min Typ Ma
9、x SENSOR INPUT Measurement Range1Each Axis 1.0 g Nonlinearity Best fit straight line 0.5 1.0 % of FS Alignment Error2 1.0 degrees Transverse Sensitivity3 2.0 % SENSITIVITY Xout and Yout Each Axis 3.0V supply 23.7 25.0 26.3 % duty cycle/g Change over Temperature from 25C-10C from 25C70C -50 70 % % ZE
10、RO g BIAS LEVEL 0 g Offset Each Axis -0.05 0.0 +0.05 g 0 g Duty Cycle 48.7 50 51.3 % duty cycle 0 g Offset over Temperature Based on 25%/g 0.1 0.5 mg/C PWM Frequency 95 100 105 Hz NOISE PERFORMANCE Noise Density, rms 0.13 0.18 mg/Hz FREQUENCY RESPONSE 3dB Bandwidth 6 8 10 Hz SELF TEST Continuous Vol
11、tage at Xout, Yout under Failure 3.0V Supply, output rails to supply voltage 3.0 V Xout and Yout OUTPUTS Normal Output Range Output High Output Low 2.8 0.2 V V Current Source or sink, 2.7V-3.6V supply 100 A Rise/Fall Time 2.7 to 3.6V supply 90 100 110 nS Turn-On Time43.0V Supply 150 mS POWER SUPPLY
12、Operating Voltage Range 2.7 3.0 3.6 V Supply Current 3.0 V 1.5 mA TEMPERATURE RANGE Operating Range -10 +70 C NOTES 1Guaranteed by measurement of initial offset and sensitivity. 2 Alignment error is specified as the angle between the true and indicated axis of sensitivity. 3 Cross axis sensitivity i
13、s the algebraic sum of the alignment and the inherent sensitivity errors. 4.Settled to within 17mg. MEMSIC MXD6025Q Rev.A Page 3 of 6 2/27/2007 ABSOLUTE MAXIMUM RATINGS* Supply Voltage (VDD) .-0.5 to +7.0V Storage Temperature .-65C to +150C Acceleration .50,000 g *Stresses above those listed under A
14、bsolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; the functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditio
15、ns for extended periods may affect device reliability. Pin Description: LCC-8 Package Pin Name Description I/O 1 PD Power down pin I 2 COM Connected to ground I 3 GND Connected to ground I 4 NC Do Not Connect NC 5 NC Do Not Connect NC 6 Yout Y Channel Duty Cycle Output O 7 Xout X Channel Duty Cycle Output O 8 VDD2.7V to 3.6 V I Ordering Guide Model PWM Frequency Temperatur e Range Package MXD6025QB 100Hz -10 to 70C LCC8, Pb-free RoHS compliant All parts are shipped in tape and reel packaging. C
