The SiT5157 Super-TCXO is a highly flexible, tight-stability oscillator capable of supporting up to 220 MHz. Based on SiTime’s unique DualMEMS™ and TurboCompensation™ temperature sensing technology, this device delivers excellent dynamic performance in the presence of common environmental hazards, such as airflow, temperature perturbation, vibration, shock, power supply noise and electromagnetic interference (EMI). The SiT5157 is engineered for high-reliability systems in industrial, server and storage, networking and telecom.

The SiT5157 can be factory-programmed to any combination of frequency, stability, voltage and pull range. This programmability enables designers to customize MEMS TCXO configuration for best system performance while eliminating the long lead time and customization costs associated with quartz devices.

 

Frequency
60 to 220 MHz
Frequency Stability (ppm)
±0.5, ±1, ±2.5
Operating Temperature Range (°C)
-20 to +70, -40 to +85, -40 to +105
Oscillator Type
TCXO-SE
Output type
LVCMOS
Package Type (mm²)
5.0 x 3.2 10-pin
Phase Jitter (RMS)
0.31 ps
Pull Range (ppm)
±6.25, ±10, ±12.5, ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1600, ±3200
Features
Precision TCXO
Voltage Supply (V)
2.5, 2.8, 3, 3.3
Availability
Production
Applications
  • Data communication systems
  • Microwave backhaul
  • Ethernet switches and routers
  • Data Center
  • Audio & Video
  • Test and Measurement
  • Industrial IEEE1588
  • Precision GNSS
  • GPS/GNSS Modules

5157

Features & Benefits

Exceptional dynamic stability under airflow, fast temp. ramp

  • ±500 ppb over-temp. stability
  • 3e-11 ADEV at 10 second average time
  • ±15 ppb/°C frequency slope (ΔF/ΔT), 10°C/min ramp
    • Enables fastest satellite lock under any operating conditions

20x better phase noise under vibration

  • Minimizes loss of satellite lock in high-vibration environments

No activity dips or microjumps

  • Eliminates the need for costly inspection or burn-in test

0.2 ps/mV power supply noise rejection (PSNR)

  • Reduces BOM by eliminating a dedicated LDO for the TCXO

LVCMOS or Clipped sinewave output

  • Optimize for best balance between EMI and jitter

Rich programmable features

  • Any frequency between 60 to 189 MHz and 200 to 220 MHz
  • ±0.5 ppm, ±1 ppm, ±2.5 ppm
  • 2.25 to 3.63 V
  • Large pull range from ±6.25 to ±3200 ppm:
    • Customize TCXO specifications for optimal system performance

Digital frequency tuning through I2C

  • Eliminate frequency shift caused by board noise

Superior reliability

  • 1 billion hours MTBF 
  • Lifetime warranty: Reduces repair costs and field failures due to clock components

 

Performance Reports

The following PDF reports contain details of actual measurements on SiTime devices at the frequencies mentioned below and are intended to supplement the datasheet. Measurement conditions and equipment are specified in the individual files. If you desire a more detailed report than the ones provided below, please contact your local SiTime sales representative or email salessupport@sitime.com.

Quality Documents

Additional Resources