Introducing the SDI 1527: A Cutting-Edge MEMS DC Accelerometer
The SDI 1527 is a compact, tactical-grade MEMS DC accelerometer designed specifically for unmanned systems. It excels in applications that demand remarkable repeatability, minimal noise, and enduring stability across a broad spectrum of temperatures.
This miniature sensor features a hermetically sealed design that integrates a MEMS capacitive sensing element along with a custom integrated circuit (IC) that includes a sense amplifier and a differential output stage. Its construction ensures that it remains largely unaffected by temperature fluctuations and gradients.
each unit undergoes rigorous testing, programming, and calibration by SDI, and is marked with a unique serial number on both the top and bottom surfaces for easy traceability.A detailed calibration report accompanies every device,documenting key metrics such as bias,scale factor,linearity,operating current,and frequency response.
Key Specifications
| ± 10g | ± 25g | ± 50g | |
| Dimensions | 0.35 x 0.35 x 0.165” | 0.35 x 0.35 x 0.165” | 0.35 x 0.35 x 0.165” |
| Weight | 0.68g | 0.68g | 0.68g |
| Power Supply | +5 VDC, 6.5 mA | +5 VDC, 6.5 mA | +5 VDC,6.5 mA |
| Velocity Random Walk (VRW) | 0.07 m/s/√hr | 0.012 m/s/√hr | 0.025 m/s/√hr |
| Long-term Bias Repeatability | 1.25 mg | 1.5 mg | 3.0 mg |
| In-run Bias Stability | 12 µg | 30 µg | 60 µg |
| Scale Factor Stability (Long Term) | 300 ppm | 300 ppm | 300 ppm |
| Analog output | ±4 VDC Differential | ±4 VDC Differential | ±4 VDC Differential |
