ADXL250

a ؎5 g to ؎50 g, Low Noise, Low Power, Single/Dual Axis iMEMS® Accelerometers ADXL150/ADXL250 FUNCTIONAL BLOCK DIAGRAMS TP (DO NOT CONNECT) +VS 0.1␮F SENSOR +VS 2 FEATURES Complete Acceleration Measurement System on a Single Monolithic IC 80 dB Dynamic Range Pin Programmable ؎ 50 g or ؎ 25 g Full Scale Low Noise: 1 m g /√ Hz Typical Low Power: <2 mA per Axis Supply Voltages as Low as 4 V 2-Pole Filter On-Chip Ratiometric Operation Complete Mechanical & Electrical Self-Test Dual & Single Axis Versions Available Surface Mount Package ADXL150 GAIN AMP 5k⍀ VOUT BUFFER AMP DEMODULATOR 25k⍀ CLOCK 9 SELF-TEST COM OFFSET NULL X OFFSET NULL TP (DO NOT CONNECT) ADXL250 +VS 0.1␮F SENSOR GAIN AMP 25k⍀ DEMODULATOR 5k⍀ BUFFER AMP VOUTX GENERAL DESCRIPTION The ADXL150 and ADXL250 are third generation ± 50 g surface micromachined accelerometers. These improved replacements for the ADXL50 offer lower noise, wider dynamic range, reduced power consumption and improved zero g bias drift. The ADXL150 is a single axis product; the ADXL250 is a fully integrated dual axis accelerometer with signal conditioning on a single monolithic IC, the first of its kind available on the commercial market. The two sensitive axes of the ADXL250 are orthogonal (90°) to each other. Both devices have their sensitive axes in the same plane as the silicon chip. The ADXL150/ADXL250 offer lower noise and improved signal-to-noise ratio over the ADXL50. Typical S/N is 80 dB, allowing resolution of signals a...