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


The XCalibur™ SiT1408 active resonator is a drop-in replacement for 4-pin SMD quartz crystal resonators. As an active MEMS device, the SiT1408 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 SiT1408 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.

Program resonators to get instant samples, optimized performance, and fast prototyping | Learn More

View related resonators: 115 to 137 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 1 to 110 MHz
Frequency Stability (ppm) ±15 at 25°C, ±20 all-inclusive, ±25 all-inclusive, ±50 all-inclusive
Output Type LVCMOS
Operating Temperature Range (°C) -20 to +70, -40 to +85
Voltage Supply (V) 1.8, 2.5, 2.8, 3.0, 3.3
Package Type (mm²) 2.5x2.0, 3.2x2.5
1st Year Aging (ppm) 0
Load Capacitance (pF) 4,700 (4.7 nF) ±10%
Motional Resistance (Ω) None
Features Field programmable, Guaranteed startup, No tuning cap required, Eliminates ESR and other crystal resonator issues
Availability Production

Configurable feature sets

  • Any frequency between 1 and 110 MHz with 6 decimal places of accuracy
  • Stability from ±20 ppm to ±50 ppm
  • Industrial or extended commercial temp.
  • 1.8 V, 2.5 V to 3.3 V, 1.8 V to 3.3 V supply voltage
  • Customize specification for optimal system performance
  • Use same base device for many designs, reducing qualification needs

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

  • 100% drop-in replacement of quartz crystal resonators

Low power consumption

  • 1.2 µA typical standby current (1.8 V)
  • 3.6 mA typical active current (1.8 V)
  • Extends battery life in portable applications
  • Reduces power consumption for greener systems

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


  • Ethernet
  • Firewire
  • USB
  • Audio & video
  • Fibre channel
  • Solid-state drives (SSD)
  • Storage, servers and datacenters
  • Computer servers
  • Processor clocking
  • FPGA clocking
  • Networking switches and gateways
  • CCTV and surveillance equipment
  • Industrial probes and equipment
  • Medical devices
  • Serial-data links
  • Fiber, cable, DSL
  • CPE & home gateway
  • Security appliances
  • Data centers
  • Factory automation
  • Security & surveillance
  • Medical electronics
  • Power & energy
  • Test and measurement
  • Retail electronics
  • Long-range communications
  • Indoor positioning
  • Wireless charging
  • Consumer electronics
  • Home entertainment
  • VR & AR
  • Personal computing
  • Home automation
  • Home appliances

Narrow By:

Narrow By: