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MXD2020ML

Low Cost +/- 1g Dual Axis Accelerometer with Digital Outputs

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BR852020 16.53

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Resolution better than 1 milli-g Dual axis accelerometer fabricated on a monolithic CMOS IC On chip mixed mode signal processing No moving parts 50,000 g shock survival rating 17 Hz bandwidth expandable to >160 Hz 3.0V to 5.25V single supply continuous operation Continuous self test Independent axis programmability (special order) Compensated for Sensitivity over temperature. Click here for the Summary of Memsic Products.

The MXD2020ML is a low cost, dual axis accelerometer fabricated on a standard, submicron CMOS process. It is a complete sensing system with on-chip mixed mode signal processing. The MXD2020ML measures acceleration with a full-scale range of 1 g and a sensitivity of 20%/g. It can measure both dynamic acceleration (e.g. vibration) and static acceleration (e.g. gravity).

The MXD2020ML design is based on heat convection and requires no solid proof mass. This eliminates stiction and particle problems associated with competitive devices and provides shock survival of 50,000 g, leading to significantly lower failure rate and lower loss due to handling during assembly.

The MXD2020ML provides two digital outputs that are set to 50% duty cycle at zero g acceleration. The outputs are digital with duty cycles (ratio of pulse width to period) that are proportional to acceleration. The duty cycle outputs can be directly interfaced to a micro-processor.

The typical noise floor is 0.2 mg/ allowing signals below 1 milli-g to be resolved at 1 Hz bandwidth. The MXD2020ML is packaged in a hermetically sealed LCC surface mount package (5 mm x 5 mm x 2 mm height) and is operational over a -40C to 85C temperature range. Click here for datasheet.

 

 

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Last modified: April 04, 2004