ADIS16362 - FAQ

What is an accelerometer and a gyroscope, and how do they differ?

An accelerometer is a sensor that measures acceleration or translational motion. A gyroscope is an angular rate sensor - it measures the rate of angular rotation. While angular accelerometers (devices that measure the rate of change of angular rotation) do exist, they are rarely used. Generally, accelerometers are thought of as devices that measure linear acceleration.

What is an inertial sensor?

Strictly speaking, an inertial sensor is a device that uses inertia to perform a measurement. As a practical matter, when people say "inertial sensor" they are referring to an accelerometer or a gyroscope.

Do you offer MIL-STD-461 compliance, or test data for your Inertial Measurement Units (IMU) ADIS1636x, ADIS1640x products?

MIL-STD-461 is military standard for EMI/RFI emissions and susceptibility. This is typically characterized and qualified at a system level, so we don’t offer certification for this standard. While we do not have any data specific to MIL-STD-461 testing, we can offer the following insights: 1.)The ADIS1636x and ADIS1640x components provide approximately 2.4uF of capacitance on the power supply pins, which help reduce noise on these lines. 2.) The MEMS elements used in the IMU products employ tiny, differential structures which will provide rejection of common-mode EMI/RFI nfluences. 3) We have received positive feedback from several customers who tested these devices in high-field environments, but have not provided quantifiable test data against MIL-STD-461. 4) The magnetometers are designed to measure/respond to magnetic fields and could respond to some radiated susceptibility (RS) conditions associated with MIL-STD-461/2. 5)The iSensor IMU products were designed with standard “best practices” which help manage sensitive circuit nodes for EMI/EMF interference.