Silicon Designs Inc. has launched the Model 1523, a precision industrial microelectromechanical systems (MEMS) accelerometer designed to reduce temperature-related measurement errors in applications requiring stable sensing performance.
The Model 1523 is the highest-performing accelerometer in SDI’s industrial surface-mount family, offering tighter limits on bias and scale-factor temperature coefficients without requiring an inertial-grade device. The accelerometer specifies a bias temperature coefficient of ±25 parts per million (ppm) of span/°C and a scale-factor temperature coefficient of -50/+25 ppm/°C across an operating temperature range of -55°C to +125°C.
Thermal Performance and Calibration
The Model 1523 undergoes individual thermal characterization and calibration during production, followed by climate-chamber verification of bias and scale-factor performance over temperature.
The accelerometer provides continuous response down to 0 Hz DC, supporting the measurement of static and very low-frequency acceleration, as well as dynamic motion within its usable bandwidth. Additional specifications include a low-noise differential analog output, ±4 V differential full-scale output, a 5,000 g peak mechanical shock rating, and a hermetically sealed ceramic J-lead package.
Each accelerometer is individually serialized and supplied with a calibration report documenting measured bias, scale factor, linearity, operating current, and frequency response.
Measurement Ranges and Sensing Applications
The Model 1523 is available in three standard measurement ranges: ±10 g, ±25 g, and ±50 g. It retains the analog architecture and interface of SDI’s industrial surface-mount family while offering tighter limits on temperature-related measurement errors than the company’s standard industrial accelerometers.
Applications identified by SDI include inertial sensing, robotics, precision instrumentation, industrial automation, structural monitoring, machine condition monitoring, seismic measurement, and test and measurement.
