32.768 kHz MEMS resonator is only 0.9×0.6×0.3mm

Measuring just 0.9×0.6×0.3mm (50 % smaller than a conventional 32.768 kHz crystal resonator), the WMRAG series 32.768 kHz MEMS resonator is the world’s smallest, claims manufacturer Murata.

Murata Manufacturing Co., Ltd. (Head Office: Nagaokakyo-shi, Kyoto; Chairman of the Board and President: Tsuneo Murata) has developed the world’s smallest 32.768kHz MEMS resonator, which is expected to make a significant contribution to reducing the size and power consumption of IoT devices, wearables, and healthcare devices.

32.768 kHz MEMS resonator is only 0.9×0.6×0.3mm

While achieving miniaturization through MEMS technology, the new MEMS resonator exhibits frequency temperature characteristics of less than 160ppm (Operating temperature: -30 to 85°C ) with an initial frequency accuracy (25°C ) that is comparable to or better than that of a quartz tuning fork crystal resonator.

Key features

Over 50% smaller than conventional tuning fork quartz crystal resonators

With dimensions measuring 0.9 x 0.6 x 0.3mm (width, length, height), the new MEMS resonator is more than 50% smaller*6 than a conventional 32.768kHz tuning fork crystal resonator.

Built-in load capacitors

A typical pierce-type oscillator circuit design uses two external multilayer ceramic load capacitors.  The new MEMS resonator is equipped with built in load capacitors, which makes possible a reduction in external parasitic capacitance, mounting space, and further contributes to more flexible circuit design.

Reduced power consumption by realizing a low ESR

With crystal resonators in general, the ESR tends to rise as the device becomes smaller in size. However, with a low ESR (75kΩ) the MEMS resonator can generate a stable reference clock signal by reducing the IC gain while also cutting power consumption by 13% compared to a conventional quartz crystal. (Based on internal tests)

Read more: 32.768 kHz MEMS resonator is only 0.9×0.6×0.3mm

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