Crystal constructed for wearable electronics and computing

October 02, 2013 // By Graham Prophet
Murata now has the XRCGD crystal unit; with a frequency precision of ±20ppm, the crystal is able to support the frequency tolerances required for wireless communications such as Wi-Fi and Bluetooth. The crystal unit is aimed at consumer electronic devices that are worn by a person and include some type of computing and wireless communication features.

Measuring 2 x 1.6 x 0.45 mm, the XRCGD crystal is available with nominal operating frequencies from 24 to 48 MHz. Operating temperature is -30 to +85C. Equivalent series resistance (ESR) is in the range of 60 – 22 Ω and is model-dependent. Murata believes it is the first in the industry to adopt a fusion sealing technique for complete hermetic seal that uses an alloy in the metal cap structure. Its proprietary packing technology, unavailable in existing crystal resonators, enables superior quality and cost performance, and is suitable for mass production. At the same time it achieves high density mounting and slimming of the unit.

Murata Europe; www.murata.eu