ADXL321

www.DataSheet4U.com Small and Thin ±18 g Accelerometer 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 µA 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 GENERAL DESCRIPTION The ADXL321 is a small and thin, low power, complete dualaxis 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 µg/√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. APPLICATIONS Vibration monitoring and compensation Abuse event detection Sports equipment FUNCTIONAL BLOCK DIAGRAM +3V VS ADXL321 CDC AC AMP SENSOR DEMOD OUTPUT AMP OUTPUT AMP RFILT 32kΩ RFILT 32kΩ COM ST Figure 1. Rev. 0 Information furnished by Anal...