Norwood, Mass. Analog Devices, Inc. (ADI) has introduced a high-bandwidth MEMS vibration sensor to enable better monitoring of industrial equipment performance and to reduce downtime due to unforeseen system failures. The ADXL001 is said to deliver high-performance and high-reliability vibration monitoring in a small 5 x 5-mm ceramic package at nearly half the cost of current solutions.
Delivering higher bandwidth and a single-chip solution that is easy to implement, the ADXL001 based on Analog Devices' iMEMS Motion Signal Processing technology and the company's expertise in consumer applications for high-volume manufacturing and automotive solutions for high reliability and quality enables vibration analysis in industrial applications that typically have been cost-prohibitive or only conducted periodically. It allows vibration monitoring to be performed continuously without interrupting normal operation of the equipment.
The breakthrough is the ability to provide bandwidth out to 22 kHz, which allows for the monitoring of equipment health and reduction of costly downtime, said Max Liberman, product manager, high-g accelerometers at Analog Devices' Micromachined Product Division.
Many other vibration sensors operate below 5 kHz of bandwidth, a frequency range that would be emitted only after extensive equipment failure, however, the ADXL001, is capable of very early detection of motor-bearing vibration and irregularities up to 22 kHz, allowing system operators to identify failing equipment before damage is sustained, said ADI.
The vibration sensor also lowers the total system cost, at half the price of leading competitive solutions, and provides a small real estate, Liberman said.
"It's a single-chip solution that you put on the board, run power to it and it delivers a full design for vibration sensing. We're trying to help customers get to market as fast as possible. No calibration data is needed and it's extremely easy to design."
ADXL001 block diagram
Available in three full-scale dynamic ranges of ±70 g, ± 250 g and ± 500 g, the new vibration and shock sensors offer the sensitivity to work in a wide range of applications. All three g ranges offer a wide bandwidth (22-kHz resonant frequency) and provide frequency response down to dc. The sensors also tout excellent nonlinearity of 0.2 percent of full-scale range.
The ADXL001 is highly resistant to electromagnetic interference (EMI) and radio frequency interference (RFI), and operates with an extended temperature range of -40°C to +125°C, allowing the part to be used in hazardous industrial conditions. The ADXL001 functions on a 3.3-V to 5-V supply.
Other features include integrated self-test, low-power consumption (3.5 mA typical), and low noise (4 mg/rtHz). In addition, the iMEMS vibration sensor requires no calibration and is small enough to be easily designed into the motor control circuitry or mounted on existing factory equipment at the point of measurement interest.
The ADXL001 is well-suited to work with Analog Devices' precision data converters and in conjunction with ADI's SigmaDSP processor and intuitive SigmaStudio graphical user interface to provide equipment designers with an easy-to-use programming environment. As the output of the ADXL001 passes through the SigmaDSP processor, the system designer can use the SigmaStudio software to perform various processing techniques including filtering and amplification.
Pricing: $35 in quantities of 1,000-unit quantities.
Availability: Housed in an 8-pin LCC ceramic package, ADXL001 will be available in sample quantities in May, with volume production scheduled for August.
Product information: ADXL001
Analog Devices Inc., www.analog.com