Frequency

MEMS resonators boast low ESR characteristics

3rd June 2021
Mick Elliott

MEMS resonators from Murata are piezoelectric elements that function as mechanical resonators to generate a constant frequency.

The recently released WMRAG of 32.768kHz resonators, now available from Anglia Components, are said to be the smallest currently available on the market.

Utilising MEMS technology has allowed Murata to realise a resonator with very low ESR characteristics that is currently unachievable by quartz crystal resonators.

Typically the ESR is 15% lower than equivalent Quartz based technologies.

The MEMS resonators achieve excellent frequency accuracy and stable temperature characteristics without the use of active elements to correct the initial frequency and frequency shift by temperature.

The device supports high reliability especially in high temperature conditions because it does not utilise organic adhesives inside of the package, for this reason they can be used in applications where good high-temperature performance is required, such as in industrial equipment and lighting.

This helps designers reduce both power consumption and mounting space in the application.

Murata have also worked with several semiconductor manufacturers including STMicroelectronics to certify the MEMS resonators in reference designs.

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