High Temperature Active Resonator Drop-In Replacement for 4-pin SMD XTAL


The XCalibur™ SiT1418 active resonator is a drop-in replacement for high temperature quartz crystal resonators. As an active MEMS device, the SiT1418 eliminates issues related to crystal resonators, such as cold startup under all conditions, crystal motional series resistance (ESR) compensation, negative resistance testing, and the need for tuning capacitors. One XCalibur active resonator can drive up to two clock inputs. Compared to traditional crystal resonators, XCalibur resonators have better reliability and better immunity to shock, vibration, and EMI. The SiT1418 provides industry-best 0.1 ppb/g vibration sensitivity, 10,000 g shock and 70 g vibration resistance. This device also features a wide frequency range, excellent stability, and short lead times for industrial, medical, automotive, avionics, and other high-temperature applications.

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Five industry standard footprints as small as 2016 for all frequencies, voltages, and stabilities
"Specs" "Value"
Frequency 1 to 110 MHz
Frequency Stability (ppm) ±15 at 25°C, ±20 all-inclusive, ±25 all-inclusive, ±30 all-inclusive, ±50 all-inclusive
Output Type LVCMOS
Operating Temperature Range (°C) -40 to +105, -40 to +125, -40 to +150 (Contact SiTime)
FlexEdgeTM Rise/Fall Time Yes, programmable drive strength
Voltage Supply (V) 1.8, 2.5 to 3.3
Package Type (mm²) 2.5x2.0, 3.2x2.5
Load Capacitance (pF) 4,700 (4.7 nF) ±10%
Features Field programmable, Guaranteed startup under all conditions, No tuning cap required, No motional series resistance (ESR), No negative resistance testing
Availability Production

Unique combination of

  • ±20 ppm
  • high temperature operation from -40 to 125 °C

Industry-standard 2520 and 3225 packages for all frequencies, voltages and stabilities

  • 100% drop-in replacement of quartz crystal resonators

0.1 ppb/g low vibration sensitivity

  • Improved system performance under vibration
  • Simpler carrier drop-test compliance (STB, etc.)

70 g vibration and 10,000 g shock

  • Best system reliability in harsh environments

FlexEdge™ drive strength

  • Slower rise/fall time that minimizes EMI from the oscillator
  • Lower cost by driving multiple loads and eliminate additional timing components

    ltra-fast lead time (4 to 6 weeks)

    • Reduce inventory overhead
    • Mitigate shortage risks


    • Engine & Transmission ECUs
    • Infotainment
    • XTAL Replacement
    • Precision GNSS
    • ADAS Computers
    • GPS / GNSS Modules
    • Automotive Cameras
    • Smart Meters
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