MEMS location sensor boosts resolution while cutting current drain

MEMS location sensor boosts resolution while cutting current drain

Billed as a new generation of geomagnetic modules, the LSM303DLM digital-compass device integrates a high-resolution three-axis accelerometer and a three-axis magnetic sensor to address advanced navigation and location-based services in portable consumer applications. Housed in a 5 x 5 x 1-mm package, the MEMS module reduces current consumption and increases magnetic sensing resolution compared to previous solutions.

In operation, the sensing device consumes just 360 µA, 50% less than other devices currently in production. The module provides output across full-scale ranges of ±2, ±4, ±8 G (linear acceleration) and from ±1.3 to ±8 Gauss; magnetic sensing resolution is 30% better than the module’s predecessor, the LSM303DLH, with which it is pin-to-pin and software compatible.

The device couples high-precision sensing with smart embedded features such as 6D orientation detection, wake-up/power-down functions, and two programmable interrupt signals for immediate notification of motion detection, free fall, and other conditions. ($1.95 ea / 100,000 — available now.)

By Richard Comerford

STMicroelectronics , Lexington , MA
Information 781-861-2650
www.st.com