Silicon Sensing Zenith® is a closed-loop, single-axis MEMS accelerometer built for precision-critical measurement. It pairs a ±14 g dynamic range with a noise power spectral density of 10 µg/√Hz across 0 to 100 Hz, 2.5 µg rms bias instability and velocity random walk of 0.003 m/s/√hr, and reports linear acceleration and temperature over a digital SPI® interface. The sensor occupies a hermetically sealed ceramic LCC surface-mount package of 10.4 × 6.0 × 2.2 mm weighing 0.4 g, and holds full stated performance from -40°C to +105°C. Zenith is offered in-plane as the CAS150 and orthogonally as the CAS170, so a pair on one PCBA gives multi-axis measurement without additional board area.

Why Choose the Zenith® CAS150 Closed-Loop MEMS Accelerometer?

• Closed-loop MEMS architecture for tactical-grade stability

• ±14 g dynamic range

• Noise spectral density of 10 µg/√Hz across 0 to 100 Hz

• Bias instability of 2.5 µg rms

• Velocity random walk of 0.003 m/s/√hr typical

• Bandwidth of 425 Hz typical

• Digital SPI® output of linear acceleration and temperature data

• Internal temperature sensor

• Operating temperature range of -40°C to +105°C

• Hermetically sealed ceramic LCC surface-mount package

• In-plane (CAS150) and orthogonal (CAS170) variants for multi-axis on one PCBA

What Is the Zenith® CAS150 Closed-Loop MEMS Accelerometer Used For?

• Aerospace

• Agriculture

• Defence

• Industrial

• Marine

• Rail

• Robotics

• Space

Frequently Asked Questions

What is the Zenith® CAS150 Closed-Loop MEMS Accelerometer?

Zenith® is Silicon Sensing’s closed-loop, single-axis MEMS accelerometer, measuring linear acceleration across a ±14 g range with 2.5 µg rms bias instability and 10 µg/√Hz noise spectral density, output over SPI® from a 10.4 × 6.0 × 2.2 mm hermetically sealed ceramic package.

What should I look for when selecting a sensor like the Zenith® CAS150 Closed-Loop MEMS Accelerometer?

Noise spectral density, bias instability, velocity random walk and dynamic range determine fitness for a navigation or stabilisation application — see the specifications above. Zenith’s closed-loop architecture is what delivers its bias and scale factor stability across the full -40°C to +105°C range.

Where is the Zenith® CAS150 Closed-Loop MEMS Accelerometer available?

The Zenith® CAS150 Closed-Loop MEMS Accelerometer is available through Leo Drive in the following region: Turkey. For other regions, please contact Leo Drive.

How can I get the datasheet and technical documents for the Zenith® CAS150 Closed-Loop MEMS Accelerometer?

The preliminary datasheet is attached to this page. Further technical documents are available on the manufacturer’s website, and you can contact Leo Drive for the released revision and integration support.

Explore More at Leo Drive

The Zenith® CAS150 Closed-Loop MEMS Accelerometer is part of the MEMS Accelerometers range at Leo Drive. Browse all autonomous vehicle sensors and components, or talk to our engineering team about integration in your project.