The 1522 is a rugged low-cost industrial-grade surface mount MEMS DC accelerometer designed to suit drone and robotics applications that experience large fluctuations in temperature or extremes of temperature over prolonged periods of time. Available in a variety of g-range options, it incorporates a MEMS capacitive sense element and a custom ASIC designed with an integrated sense amplifier and differential output stage.
Each nitrogen-damped, hermetically sealed Model 1522 accelerometer undergoes individual temperature testing, programming, calibration, and verification within a climate chamber environment to ensure its improved performance in more temperature-intensive applications. Every 1522 is accompanied by its calibration test report, displaying the actual measured bias, scale factor, linearity, operating current, and frequency response performance numbers.
The Model 1522 produces a differential ±4 volts output voltage. The seismic center is located on a centerline through the dual sense elements halfway between them. Any errors due to rotation about this point are effectively cancelled by the internal electronics.
Specifications:
| Dimensions | 0.35 x 0.35 x 0.105” (LCC) |
| Weight | 0.62g |
| Power | 5VDC, 5mA |
| G-Range Options | ±2, 5, 10, 25, 50, 100, 200, 400g |
| Bias Calibration Error (%) | 0.2 typ., 0.5 max |
| Bias Calibration Error (mV) | 16 typ., 40 max |
| Bias Temperature Shift | -50 to +50 PPM/oC |
| Scale Factor Calibration Error (%) | 0.5 typ., 1 max |
| Scale Factor Temperature Shift | -100 to +50 PPM/oC |
| Longterm Bias Stability | ±1000 ppm typ., ±2000 ppm max |
| Longterm Scale Factor Stability | ±500 ppm typ., ±1000 ppm max |
| Analog Output | ±4 VDC Differential |
