ADXL202

过期

Low-Cost, Low-Power, Complete Dual-Axis iMEMS® accelerometer

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概述

Please see the ADXL203.

The ADXL202E is a low-cost, low-power, complete dual-axis iMEMS® accelerometer with a measurement range of ±2g. The ADXL202 can measure both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity).

The outputs are Duty Cycle Modulated (DCM) signals whose duty cycles (ratio of pulsewidth to period) are proportional to the acceleration in each of the 2 sensitive axes. These outputs may be measured directly with a microprocessor counter, requiring no A/D converter or glue logic. The DCM period is adjustable from 0.5 ms to 10 ms via a single resistor (R_SET). If an analog output is desired, an analog output proportional to acceleration is available from the X_FILT and Y_FILT pins, or may be reconstructed by filtering the duty cycle outputs.

The bandwidth of the ADXL202 may be set from 0.01 Hz to 6 kHz via capacitors C_X and C_Y. The typical noise floor is 200µg√Hz allowing signals below 2 mg to be resolved for bandwidths below 60Hz.

The ADXL202E is available in a 5 mm x 5 mm x 2 mm 8-lead hermetic LCC package. This version features improved sensitivity and zero g bias limits, lower noise, wider 3dB frequency response, and is smaller and lower priced than the original ADXL202.

The original ADXL202 in hermetic 14-lead Surface Mount Cerpak is no longer recommended for new designs.

Applications

2-Axis Tilt Sensing

Vehicle Security

PC Security

Data Projector Keystone Correction

Alarms and Motion Detectors

Inertial Navigation

参考资料

ADXL202

概述

参考资料

数据手册 2

应用笔记 10

评估设计文件 1

停产数据手册 1

模拟对话 1

软件资源

Evaluation Software 1

ADXL202

工具及仿真模型

ADXL202 Simulink Model 4

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