Silicon Designs introduces lower-cost MEMS accelerometer modules for inertial navigation
Silicon Designs, Inc. introduced its Model 2227-025, the first in a planned family of high-performance, lower-cost microelectromechanical system (MEMS) accelerometer modules for inertial navigation and tilt applications (non-ITAR). The Model 2227-025 has both an industry standard form factor and pin compatibility with many of the quartz-based accelerometers currently used in these applications. This allows the Model 2227-025 to serve as a lower-cost alternative and a direct drop-in replacement for many industry quartz-based inertial navigation accelerometers.
The design of the Model 2227-025 MEMS accelerometer module combines two capacitive silicon sense elements with a precision, custom CMOS integrated circuit, in a compact, low mass, hermetically sealed LCC package. These ±25 g modules are assembled on a high-temperature open printed circuit board (PCB) with a circuit that converts the differential output voltage of the MEMS accelerometer into a current directly proportional to the amount of applied acceleration. This design allows the Model 2227-025 to achieve the low noise, high stability, long-term repeatability, and low power needed for many of today’s inertial navigation applications. Final testing is conducted on a temperature-tumble system, providing thermal calibration parameters that simplify accelerometer use with the customer’s own real-time temperature compensation and modeling software.
Test samples of the Model 2227-025 are immediately available for customer evaluation in North America and the United Kingdom. Two additional g-ranges, to be sold as the Model 2227-010 (±10 g) and Model 2227-050 (±50 g), respectively, have anticipated availability starting in January 2019.