MXD2020HL

Supply Voltage (V_DD, VDA) ...................-0.5 to +7.0V
Storage Temperature .......................-65 to +150
Acceleration ................................................50,000 g
*Stresses above those listed under Absolute 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 conditions for extended periods may affect device reliability.

The MXD2020GL/MXD2020HL/ML/NL 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 MXD2020GL/HL/ML/NL 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 MXD2020GL/MXD2020HL/ML/NL 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 MXD2020GL/MXD2020HL/ML/NL 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 microprocessor.

The typical noise floor is 0.2 mg/  allowing signals below 1 milli-g to be resolved at 1 Hz bandwidth. The MXD2020GL/MXD2020HL/ML/NL is packaged in a hermetically sealed LCC surface mount package (5 mm x 5 mm x 2 mm height) and is operational over a -40 to 105(M/NL) and 0 to 70(G/HL) temperature range.