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The ADXL321 is a small and thin, low power, complete dual-axis accelerometer with signal conditioned voltage outputs, which is all on a single monolithic IC. The product measures acceleration with a full-scale range of ±18 g typical). It can also measure both dynamic acceleration (vibration) and static acceleration (gravity).
The ADXL321's typical noise floor is 320 g/Hz, allowing signals below 3 mg to be resolved in tilt-sensing applications using narrow bandwidths (<50 Hz).
The user selects the bandwidth of the accelerometer using capacitors CX and CY at the XOUT and YOUT pins. Bandwidths of 0.5 Hz to 2.5 kHz may be selected to suit the application.
The ADXL321 is available in a very thin 4 mm * 4 mm * 1.45 mm, 16-lead, plastic LFCSP.
ADXL321 Maximum Ratings
Parameter
Rating
Acceleration (Any Axis, Unpowered) Acceleration (Any Axis, Powered) VS All Other Pins
Output Short-Circuit Duration (Any Pin to Common) Operating Temperature Range Storage Temperature
10,000 g 10,000 g −0.3 V to +7.0 V (COM − 0.3 V) to (VS + 0.3 V)
Indefinite −55°C to +125°C −65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ADXL321 Features
` Small and thin 4 mm * 4 mm * 1.45 mm LFCSP package ` 3 mg resolution at 50 Hz ` Wide supply voltage range: 2.4 V to 6 V ` Low power: 350 A at VS = 2.4 V (typ) ` Good zero g bias stability ` Good sensitivity accuracy ` X-axis and Y-axis aligned to within 0.1° (typ) ` BW adjustment with a single capacitor ` Single-supply operation ` 10,000 g shock survival ` Compatible with Sn/Pb and Pb-free solder processes