SiTime, Silicon MEMS Oscillators and Clock Generators

SiT8921: High Frequency, Ruggedized Oscillator for Harsh Environments

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The SiT8921 is the most robust and reliable high frequency oscillator on the market with 0.1 PPB/G vibration sensitivity (G-sensivity), 50kg shock and 70g vibration resistance and 500 million hour MTBF. In addition, this device delivers a perfect combination of high frequency (up to 137 MHz), best stability (±20 PPM), widest temperature (-55 °C to 125°C ) and smallest package (2.0x1.6 mmxmm) that are not  available from quartz.

For the same device in a SOT23-5 package, refer to the SiT2021 clock generator.

 

Freq. Range (MHz)
119.342001 to 120.238999
121.243001 to 121.600999
120.262001 to 121.169999
123.948001 to 137.000000
Freq. Stability (PPM) ±20, ±25, ±30, ±50
Temp Range (°C) -55 to +125
Vibration Sensitivity
0.1 ppb/g (G-sensitivity)
Configurable Rise/Fall Time 0.25 to 1.5 ns (Output load and voltage dependent)
Supply Voltage (V) 1.8, 2.5 to 3.3
Package LxWxH (mm) 2.0x1.6x0.75, 2.5x2.0x0.75, 3.2x2.5x0.75, 5.0x3.2x0.75, 7.0x5.0x0.9
Status Production (±25 PPM, ±30 PPM, ±50 PPM), Sampling (±20 PPM)
Applications
  • Ruggedized applications for harsh environments
  • Applications in extreme temperature conditions

Features Benefits
  • Unique combination of
    • high frequency (up to 137 MHz)
    • ±20 PPM
    • widest temperature range (-55 to 125 °C)
    • smallest package (2.0 x 1.6 mmxmm)
  • Best-in-class stability and temp range for space constrained environment
  • 0.1 ppb/g low G-sensitivity
  • No performance degradation in harsh environment
  • 50 kg shock and 70 g vibration
  • Indestructable
  • Configurabler rise/fall time
  • Optimize EMI to reduce interferece to other system

 

Please contact your local SiTime sales representative or email salessupport@sitime.com.

 

Subject to change without notice

8921-ordering

Note:
10. Contact SiTime for custom drive strength to drive higher or multiple load, or SoftEdge™ option for EMI reduction.

List of Supported Frequencies

8921-freq

Notes:
15. Any frequency within the min and max values in the above table are supported with 6 decimal places of accuracy.
16. Please contact SiTime for frequencies that are not listed in the tables above.

Ordering Codes for Supported Tape & Reel Packing Method

8921-orderingcodes