The newly released ADXRS645 MEMS gyroscope provides excellent vibration immunity and a minimum rotational measurement range of ±2,000°/s, which are key performance requirements for drilling equipment operating in extreme high-temperature environments. In addition, thanks to its accurate angular rotation sensing capabilities, it can detect the difference between the drill head rotation and the motor driving the drill, thereby preventing damage to the drill string. In addition, using the ADXRS645 extends the lifespan of drilling equipment and helps drill strings operate properly, reducing downtime due to breakdowns and providing cost savings to drilling operators in the oil and gas industry.

The newly released ADXRS645 is part of ADI’s family of precision high-temperature components designed for drilling applications. This family includes products that operate at temperatures above 175°C, such as the ADXL206 ±5g precision MEMS accelerometer, the AD8229 ultra-low noise instrumentation amplifier, the ADR225 2.5V bandgap voltage reference, and the AD8634 dual amplifier providing rail-to-rail output.

The downhole drilling industry is introducing various sensors to better understand the movement of drill strings occurring below the surface, optimize operations to prevent drill damage, and increase productivity. However, other approaches to rotational measurement, such as using magnetometers, are vulnerable to drill vibrations and cannot accurately capture rapidly changing rotational speeds; furthermore, the measured values can be affected by iron-containing materials or metal castings used in the well.

Key Performance of ADXRS645 MEMS Gyroscope

The ADXRS645 operates using a low single power source of 5V and is the only MEMS gyroscope capable of operating for at least 1,000 hours at a temperature of 175°C. It uses a proprietary ceramic vertical mount package, allowing for secure mounting on a PCB without the need for a vertically mounted daughter board.