SiTime

SIT5501/SIT5503 Super TCXO with Mini OCXO Performance

SiTime's Super TCXO differential oscillators minimize call and link drops in high-vibration environments

Image of SiTime's SIT5501/SIT5503 Super TCXOSiTime's Elite X™ SiT5501 is a ±10 ppb Stratum 3E precision oscillator. Engineered for exceptional dynamic performance, this MEMS-based super TCXO is ideal for replacing larger, less robust quartz mini OCXOs in edge networks. The SiT5501 is two times smaller, uses four times less power, and is thirty times more reliable than comparable mini OCXOs while being fully compliant with the GR-1244 Stratum 3E oscillator specifications. By leveraging SiTime’s unique DualMEMS® and TurboCompensation® temperature sensing technology, the SiT5501 delivers stable timing in the presence of environmental stressors such as airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

The SiT5501 can be factory-programmed to any combination of frequency, voltage, and pull range. This programmability enables designers to optimize the clock configuration while eliminating the long lead time and customization costs associated with quartz TCXOs where each frequency is custom-built.

The Elite X SiT5503 is a ±5 ppb Stratum 3E precision oscillator. Engineered for exceptional dynamic performance, this MEMS-based super TCXO is ideal for replacing larger, less robust quartz OCXOs in edge networks. The SiT5503 adds up to four hours of holdover capability to the Elite X product line in addition to being four times smaller, using four times less power, and is thirty times more reliable than comparable OCXOs. By leveraging SiTime’s unique DualMEMS and TurboCompensation temperature-sensing technology, the SiT5503 delivers stable timing in the presence of environmental stressors such as airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

The SiT5503 can be factory-programmed to any combination of frequency, voltage, and/or pull range. This programmability enables designers to optimize the clock configuration while eliminating the long lead time and customization costs associated with quartz TCXOs where each frequency is custom-built.

Features
  • Exceptional dynamic stability under airflow with fast temperature ramping
    • ±5 ppb overtemperature with stability from -40°C to +95°C
    • ±0.3 ppb/°C frequency slope (ΔF/ΔT) ensures system-level quality of service for telecom and networking equipment in hostile environments
    • ±0.5 ppb/day aging
    • 2e-11 ADEV at 10-second averaging time
  • Four times lower power and four times smaller for compact edge devices
    • 110 mW typical power consumption (2.5 V)
    • Robust 7.0 mm x 5.0 mm package
  • Twenty times better phase noise under vibration
    • Minimizes call and/or link drops in high-vibration environments
  • No activity dips or micro jumps
    • Eliminates the need for costly screening or burn-in tests
  • 0.2 ps/mV power supply noise rejection (PSNR)
    • Reduces BOM by eliminating a dedicated LDO for TCXO
  • LVCMOS or clipped sinewave output
    • Optimizes for best balance between EMI and jitter
  • Rich programmable features
    • Any frequency between 1 MHz to 60 MHz
    • 2.25 V to 3.63 V
    • Large pull range from ±6.25 ppm to ±3,200 ppm: customize TCXO specifications for optimal system performance
  • Digital frequency tuning through I2C
    • Eliminates frequency shift caused by board noise
  • Superior reliability
    • Reduces field failures and repair costs due to clock components
    • 1 billion hours MTBF
    • Lifetime warranty
Applications
  • SONET/SDH Stratum 3E
  • Small cells
  • IEEE 1588 Boundary clocks and grandmasters
  • Carrier-class switches
  • Synchronous Ethernet (G.8262, options 1 and 2)
  • Core and Edge routers
  • Wireless and backhaul
  • Instrumentation
  • Cable model termination systems (CMTS)
  • COSPAS/SARSAT
  • Broadband satellites
  • Smart farming
  • GPS/GNSS modules
  • Smart meters
  • Long-range communications
  • Asset tracking
  • Optical transport (OTN, OLT, etc.)
  • Indoor positioning
  • Smart cities
  • Defense and aerospace
Resources

SIT5501 SIT5503 Super TCXOs

ObrázekObjednací číslo výrobcePopisTypKmitočetAvailable QuantityCenaZobrazit podrobnosti
1 MHZ 60 MHZ, ELITE X STRATUM 3SIT5501AI-WTG30IT-20.000000F1 MHZ 60 MHZ, ELITE X STRATUM 3DCXO20 MHz0 - Immediate$1,497.47Zobrazit podrobnosti
1 MHZ 60 MHZ, ELITE X STRATUM 3SIT5501AE-WT-33N0-10.000000X1 MHZ 60 MHZ, ELITE X STRATUM 3TCXO10 MHz277 - Immediate$1,435.19Zobrazit podrobnosti
1 MHZ 60 MHZ, ELITE X 5 PPB PRESIT5503AB-WW-33E0-10.000000X1 MHZ 60 MHZ, ELITE X 5 PPB PRETCXO10 MHz83 - Immediate$1,871.78Zobrazit podrobnosti
Published: 2024-01-02