Resonators

SiTime offers MEMS resonators and active MEMS resonators that deliver superior reliability and performance advantages not available from traditional ceramic or quartz XTALs – all in a tiny form factor. These resonators are vacuum sealed at the wafer level to provide an ultra-clean device with very high Q.

Our MEMS resonators provide the unique ability to be co-packaged onto a SiP or module along with high-performance semiconductor die, eliminating discrete timing components and simplifying design and manufacturing.

Our active MEMS resonators can replace 4-pin SMD crystal mount resonators to deliver greater flexibility, performance, and reliability.

Image: 2520 4-pin package, top & bottom

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 Request Datasheet Buy Now Frequency Stability(PPM) Temp. Range(°C) Size(mm2)
SiT1408 Buy Now 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
SiT1409 Buy Now 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
SiT1418 Buy Now 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
SiT1419 Buy Now 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 Buy Now 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 Buy Now 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 Buy Now 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 Buy Now 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
MHz MEMS Resonator Package Cropped Square

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 Request Datasheet Buy Now Frequency Stability(PPM) Temp. Range(°C) Size(mm2)
SiT11XX Buy Now Contact SiTime As good as ±20 Up to -40 to +125 0.42 x 0.42 0.48 x 0.48 CSP (chip-scale package) or KGD (known good die)
kHz MEMS Resonator Package Top

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 Request Datasheet Buy Now Frequency Stability(PPM) Temp. Range(°C) Size(mm2)
SiT1252 Buy Now 524 kHz ±100 over temp -40 to +85 -40 to +125 0.42 x 0.42 KGD (known good die)
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