Zenith® (CAS150/170) from Silicon Sensing is a closed-loop, single-axis MEMS accelerometer developed for precision-critical aerospace use. The device combines ultra-precise linear acceleration measurement with very low noise spectral density, supporting clear signal acquisition across long-endurance missions, rapidly changing operating conditions, and harsh aviation environments.
Its ±14g dynamic range enables accurate measurement under demanding motion profiles, while the compact, surface-mountable package supports integration where size, weight, power, and cost are important design considerations.
Zenith® is offered in two sensing orientations: the CAS150 provides in-plane measurement, while the CAS170 uses an orthogonal configuration. Engineers can combine these variants to create multi-axis measurement capability on a single printed circuit board assembly, conserving board space while retaining measurement reliability. The architecture is suited to both manned and unmanned aircraft platforms requiring sustained linear-acceleration data from a robust, compact sensor.
| Specification: | CAS150 | CAS170 |
| Bias Variation over Temperature: | ±0.15 mg/°C typical | ±0.15 mg/°C typical |
| Bandwidth (Nominal): | 425 Hz typical | 425 Hz typical |
| Operating Temperature: | -40 to +105°C | -40 to +105°C |
| SF Tolerance at 20°C: | -0.75% min, +0.75% max | -0.75% min, +0.75% max |
| Operational Shock: | 1000g/1 ms ½-sine | 1000g/1 ms ½-sine |
| Axes of Acceleration: | 1 | 1 |
| Acceleration Range: | ±14g | ±14g |
| Noise Spectral Density: | 10 μg/√Hz | 10 μg/√Hz |
| Vibration Rectification: | 70 μg/g² typical | 70 μg/g² typical |
| Size: | 10.4 × 6.0 × 2.2 mm | 10.4 × 6.7 × 2.7 mm |
| SF Variation over Temperature: | +1.3% / -0.8% | +1.3% / -0.8% |
