This document describes the technical characteristics and applications of the ADXRS645 high temperature, vibration rejecting gyroscope. The gyroscope features an innovative ceramic vertical mount package that can be oriented for pitch or roll rate response. It operates over a wide temperature range, has a long life, and offers high vibration rejection and 10,000g shock survivability. It is suitable for down hole measurements in geological exploration, extreme high temperature industrial applications, and severe mechanical environments.
The ADXRS645 is a high performance angular rate sensor manufactured using Analog Devices' patented BiMOS surface-micromachining process. It features an innovative ceramic vertical mount package that can be oriented for pitch or roll rate response and includes a temperature sensor output for compensation techniques.
Key specifications include a measurement range of ±2000°/sec (extendable to ±5000°/sec), a wide operating temperature range from −40°C to +175°C, and high vibration rejection. The device operates on a 5 V single-supply with ratiometric output and includes digital self-test inputs.
| Measurement Range | ±2000 °/sec (extendable to ±5000°/sec) |
|---|---|
| Operating Temperature Range | -40°C to +175°C |
| Supply Voltage | 5 V single-supply operation |
| Quiescent Supply Current | 3.5 mA |
| Rate Noise Density | 0.25 °/sec/ √Hz |
| Sensor Resonant Frequency | 15.5 to 20 kHz |
It is designed for use in high temperature environments with a specified performance range from −40°C to +175°C and a guaranteed life of 1000 hours at 175°C.
Yes, it features two digital self-test inputs (ST1 and ST2) that electromechanically excite the sensor to test proper operation.