GPS engines shrink to postage-stamp size

Sequoia Technology is broadening its range of solutions for location and positioning, with a new family of advanced ultraminiature GPS modules.

Sequoia Technology is broadening its range of solutions for location and positioning, with a new family of advanced ultraminiature GPS modules.

The REB-2000 series are postage-stamp-sized GPS engines - the first new products from Sequoia's new agreement with positioning system specialists Royaltek.

Just 30 x 40mm in footprint, the REB-2000 uses the SiRFStar 2 chipset, together with Royaltek exclusive low-noise amplifier and navigation algorithms, to deliver accurate position data quickly.

Small size and TricklePower design make the module especially well suited to mobile designs including PDAs, mobile phones and portable location devices.

Additionally, REB-2000 and REB-2100 have 4 and 8Mbit of Flash memory, respectively, to enable users to add their own programs The module derives location data from up to 12 satellites and, using SiRFStar 2 technology with fast 0.1s acquisition time, provides excellent performance in urban areas and amongst foliage.

SiRFStar 2 additionally provides dual multipath rejection and single-satellite positioning to ensure excellent sensitivity, for example in city canyons.

Using differential GPS the module can locate the user within 1 to 5m and what is more, the REB-2000 series has a demodulator for Wide Area Augmentation System (WAAS) signals to provide additional accuracy when the WAAS service becomes fully operational.

NMEA V2.2 protocol is included as standard for outputting position and velocity messages in NMEA-0183 format through the onboard serial interface.

Custom protocols are also supported.

With a 3.3V power input, the REB-2000 offers a trickle power mode to ensure low consumption of typically 65mA.

Peak current consumption is 170mA.

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