They are based on SiTime’s sixth-generation MEMS technology, FujiMEMS and are “at least four times smaller than the smallest legacy quartz alternatives” said the company.
The resonators are available either PCB-mounted for customer integration, or as bare die for co-packaging with SoCs or MCUs, eliminating the need for a discrete resonator on a board.
“We are finally cracking the code” said Piyush Sevalia, executive VP marketing, SiTime “in solving problems of compatibility with existing oscillator circuitry on processor device”.
The 0505 version occupies seven times less PCB area than a legacy quartz 1210 resonator, said SiTime, and is four times smaller than a 1008 quartz. (A Titan is pictured (left) next to a quartz resonator.) They also consume up to 50% lower oscillator circuit power, claimed SiTime but have faster start-up with three time lower startup energy than legacy quartz. Another benefit is the ageing stability (up to five times better than legacy quartz), specified for five years at maximum temperature.
The resonators operate from -40°C to +125°C. They also exhibit up to x50 better shock and x30 better vibration resilience, said the company.
Suitable for use in small, battery-powered, connected devices, such as wearables (e.g., smart watches and smart glasses), medical devices (e.g., glucose monitors and implantables), smart home and industrial IoT sensors and asset trackers.
Initially SiTime is sampling 32MHz resonators (Titan SiT11100), with production scheduled for the first half of 2026. The company has announced that engineering samples of the SiT11101 (76.8MHz), SiT11102 (38.4MHz), SiT11103 (48MHz) and SiT11104 (40MHz) will be available from mid-December 2025.
Although the company is making power, start-up and vibration resistance claims above, so far it has not releases absolute figures for these.
It has, however, released stability figures for the 32MHz SiT11100, which will come in various temperature grades, the widest being -40°C to +125°C:
- +/1ppm stability over 5 years at max temperature
- +/-25ppm stability over -40 to +125°C
- +/-40ppm stability over -40 to +125°C and five years of aging
A tiny adapter PCB is available that allows the component to be soldered to a 1210 or 1612 footprint on an existing board.
