Low Power Active Resonator Drop-In Replacement for 4-pin SMD XTAL


The XCalibur™ SiT1409 active resonator is a drop-in replacement for high frequency 4-pin SMD quartz crystal resonators. As an active MEMS device, the SiT1409 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 SiT1409 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 a range of applications.

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View related resonators: 1 to 110 MHz | -55 to +125°C Automotive | Active Resonator lineup

Five industry standard footprints as small as 2016 for all frequencies, voltages, and stabilities
"Specs" "Value"
Frequency 115 to 137 MHz
Frequency Stability (ppm) ±15 at 25°C, ±20 all-inclusive, ±25 all-inclusive, ±50 all-inclusive
Operating Temperature Range (°C) -20 to +70, -40 to +85
Package Type (mm²) 2.5x2.0, 3.2x2.5
External Load Capacitance (pF) 4,700 (4.7 nF) ±10%
Output Type LVCMOS
FlexEdgeTM Rise/Fall Time Yes, programmable drive strength
Voltage Supply (V) 1.8, 2.5 to 3.3
Features Field programmable, Guaranteed startup under all conditions, No tuning cap required, No motional series resistance (ESR), No negative resistance testing
Availability Production

Configurable feature sets

  • Any frequency between 115 to 137 MHz with 6 decimal places of accuracy
  • Stability from ±20 ppm to ±50 ppm
  • Industrial or extended commercial temp.
  • 1.8 V and 2.5 V to 3.3 V supply voltage
  • Customize specification for optimal system performance
  • Use same base device for many designs, reducing qualification needs

Low power consumption

  • 5.5 mA typical active current (1.8 V)
  • 1 µA typical standby current (1.8 V)
  • Extends battery life
  • Enables greener electronics

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

  • 100% drop-in replacement of quartz crystal resonators

FlexEdge™ configurable drive strength

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

Ultra-fast lead time (4 to 6 weeks)

  • Reduce inventory overhead
  • Mitigate shortage risks


  • GPON
  • EPON
  • Ethernet
  • SATA / SAS
  • Storage Servers & SSD
  • PCI
  • PCIe
  • DDR
  • CPE & Home Gateway
  • Security Appliances
  • Data Centers
  • Factory Automation
  • Commercial Security
  • Smart Meters
  • Test & Measurement
  • Retail Electronics
  • Wireless Chargers
  • Consumer Electronics
  • Home Entertainment
  • AR / VR
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