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Single-Axis, High- g , i MEMS ® Accelerometers ADXL193

FEATURES GENERAL DESCRIPTION

Complete acceleration measurement system on a single monolithic IC Available in ±120

The ADXL193 is a low power, complete single-axis accelerometer with signal conditioned voltage outputs that are all on a single monolithic IC. This product measures acceleration with a full-scale range of ±120

g or ±250 g output full-scale ranges Full differential sensor and circuitry for high resistance to EMI/RFI Environmentally robust packaging Complete mechanical and electrical self-test on digital command Output ratiometric to supply Sensitive axes in the plane of the chip High linearity (0.2% of full scale) Frequency response down to dc Low noise Low power consumption (1.5 mA) Tight sensitivity tolerance and 0

g or ±250 g (minimum). It can also measure both dynamic acceleration (vibration) and static acceleration (gravity). The ADXL193 is a fourth-generation surface micromachined i MEMS® accelerometer from ADI with enhanced performance and lower cost. Designed for use in front and side impact airbag applications, this product also provides a complete cost-effective solution useful for a wide variety of other applications. The ADXL193 is temperature stable and accurate over the automotive temperature range, with a self-test feature that fully exercises all the mechanical and electrical elements of the sensor with a digital signal applied to a single pin. The ADXL193 is available in a 5 mm × 5 mm × 2 mm, 8-terminal ceramic LCC package.

g offset capability Largest available prefilter clipping headroom 400 Hz, 2-pole Bessel filter Single-supply operation Compatible with Sn/Pb and Pb-free solder processes

APPLICATIONS

Vibration monitoring and control Vehicle collision sensing Shock detection

FUNCTIONAL BLOCK DIAGRAM

V
S

ADXL193

V TIMINGGENERATOR
DD V
DD2 400HzBESSELFILTER EXC DIFFERENTIALSENSOR DEMODAMP X
OUT SELF-TEST
05366-001

Figure 1.

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