SiTime’s silicon MEMS resonators provide the unique ability to be embedded onto an SOC and provide size, power, and ease-of-design advantages compared to discrete ceramic XTALs. SiTime offers both kHz frequency and MHz frequency resonators with very high Q, very small size (0.176 mm2), and have the highest robustness and reliability in the industry.

CATEGORIES

MHz MEMS Resonators   |   kHz MEMS Resonators   |   Active Resonators

MHz MEMS Resonators

SiTime ApexMEMS™ MHz resonators, based on our third-generation MEMS technology, are suited for high volume, space-constrained mobile and IoT applications like Bluetooth hearables and wearables, high-speed connectivity interfaces, asset-tracking, and microcontrollers. These resonators come in popular MHz frequencies and are 85% smaller than a typical quartz resonator. The SiTime ApexMEMS resonators can be integrated into standard IC packages or modules, simplifying design and manufacturing. They offer better reliability, higher performance, and environmental resilience in a small size. By replacing traditional crystal resonators, these MEMS devices simplify design, reduce board space, and improve system reliability and robustness.

Device	Datasheet	Frequency	Stability (PPM)	Temp. Range (°C)	Package Size (mm)
SiT11XX		Contact us	As good as ±20	Up to -40 to +125	0.42 x 0.42 0.48 x 0.48 CSP (chip-scale package) KGD (known good die)

kHz MEMS Resonators

SiTime TempFlat MEMS™ kHz resonators, with a tiny 0.18 mm2 footprint, provide the unique ability to be integrated onto a SOC at the die level—delivering size, power, and ease-of-design advantages compared to discrete 32 kHz quartz crystals. By embedding the resonator die into a SiP or module, external resonators are eliminated—providing multiple customer advantages such as reduced board space and BOM, improved reliability, simplified design, and faster time to market.

Device	Datasheet	Frequency	Stability (PPM)	Temp. Range (°C)	Package Size (mm)
SiT1252		524 kHz	±100 over temp	-40 to +85 -40 to +125	0.42 x 0.42 KGD (known good die)

Active Resonators

SiTime XCalibur™ active resonators are designed to replace 4-pin SMD crystal resonators in demanding applications such as automotive, industrial, and enterprise equipment. They provide excellent stability over a wide temperature range, greater reliability, reduced BOM, and ease of design. With short lead times and the elimination of design issues related to quartz crystal resonators – such as cold startup, EMI problems, the need for motional impedance (ESR) and negative resistance testing at every design and layout cycle – these active resonators greatly reduce time to market. These resonators also eliminate the need for tuning capacitors required for parallel resonant XTALs. And as an active device, they can drive two clock inputs, further reducing component count.

Device	Datasheet	Frequency	Stability (PPM)	Temp. Range (°C)	Package Size (mm)
SiT1408		1 to 110 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±50 all-inclusive	-20 to +70 -40 to +85	2.5x2.0 3.2x2.5
SiT1418		1 to 110 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±30 all-inclusive ±50 all-inclusive	-40 to +105 -40 to +125 -40 to +150 (Contact SiTime)	2.5x2.0 3.2x2.5
SiT1409		115 to 137 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±50 all-inclusive	-20 to +70 -40 to +85	2.5x2.0 3.2x2.5
SiT1419		115 to 137 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±30 all-inclusive ±50 all-inclusive	-40 to +105 -40 to +125 -40 to +150 (Contact SiTime)	2.5x2.0 3.2x2.5
SiT1420		1 to 110 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±30 all-inclusive ±50 all-inclusive	-55 to +125 -40 to +150 (Contact SiTime)	2.5x2.0 3.2x2.5
SiT1421		119 to 137 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±30 all-inclusive ±50 all-inclusive	-55 to +125 -40 to +150 (Contact SiTime)	2.5x2.0 3.2x2.5
SiT1424		1 to 110 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±30 all-inclusive ±50 all-inclusive	-40 to +85 -40 to +105 -40 to +125 -55 to +125 -40 to +150 (Contact SiTime)	2.5x2.0 3.2x2.5
SiT1425		115 to 137 MHz	±15 at 25°C ±20 all-inclusive ±25 all-inclusive ±30 all-inclusive ±50 all-inclusive	-40 to +85 -40 to +105 -40 to +125 -55 to +125 -40 to +150 (Contact SiTime)	2.5x2.0 3.2x2.5