New gyroscope offers superior sensor resolution coupled with audio and mechanical noise immunity
With a resonant frequency above the audio bandwidth, ST’s newest 3-axis digital gyroscope operates with greater accuracy and reliability, because it is completely immune to both mechanical vibrations coupled through the printed circuit board and to audio noise, such as from speakers mounted close to the sensor.
The device’s advanced design, with a single sensing structure for motion measurement along all three orthogonal axes, further increases sensing accuracy and reliability and claims to guarantee excellent output stability over time and temperature.
The L3GD20 gyroscope offers a wide set of user-programmable full-scale ranges from ±250 dps3 up to ±2000 dps, with the low full-scale values for high accuracy of slow-motion sensing and the high range to detect and measure very fast gestures and movements. The device provides a 16-bit data output, together with additional embedded digital features, such as configurable low- and high-pass filters.
Addressing power constraints in battery-operated portable devices, ST’s new gyroscope includes power-down and sleep modes and an embedded FIFO (first-in first-out) memory block for smarter power management. It can operate with any supply voltage over the range of 2.4 to 3.6 V.
In addition to enabling intuitive man-machine interfaces in portable devices, ST’s gyroscopes are used for dead-reckoning and/or map-matching in enhanced navigation applications and for compensating digital video or still camera shaking for sharper shots.
The new gyroscope is pin-to-pin adaptable and software-compatible with the current-generation device, the L3G4200D, so customers can easily ‘hot swap’ and protect their investment in application development.
The device is sampling now and volume production is scheduled for Q4 2011, with unit pricing at $2.95 for volumes in the range of 1,000 pieces.
Visit STMicroelectronics at www.st.com.
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