MEMS sensors slash size, cost for shock, vibration monitoring

MEMS sensors slash size, cost for shock, vibration monitoring

The programmable ADIS16240 iSensor intelligent impact sensor and ADIS16220 digital vibration sensor are 100 times smaller than previous, less-integrated sensor modules. At $26.58 and $53 each in thousands, respectively, the MEMS-based system-ready sensors are also one-tenth their predecssors’ cost.

Housed in a 12 x 12-mm BGA package, the 16240 consumes less than 1 mA in continuous-sampling mode with a usable bandwidth of up to 1.6 kHz. The device has a triple-axis MEMS shock/impact sensor and a recorder with an integrated programmable event-capture buffer that monitors for user-programmed shock thresholds and holds pre- and post-event data, time-stamp, temperature, and voltage. Programming features and data access are controlled from a standard SPI port.

With a ±70-g dynamic range and 100-kHz sampling rate, the 9.2 × 9.2-mm LGA 16220 combines a 22-kHz wide-bandwidth, high-g MEMS accelerometer with an embedded signal processor and data capture system for industrial applications. It captures 1,024 samples on each of three inputs, and data capture can be user-initiated, timer initiated, or event initiated. SPI-programmable features include peak sample and hold, trigger-source and threshold levels, internal filtering, and power management. (16240, $26.58 ea / 1,000 available now; 16220, $53 ea / 1,000 samples now, prod qty June.)

Analog Devices , Wilmington , MA
Information 800-262-5643
http://www.analog.com