SiT5812数据手册SiTime中文资料规格书

描述 Description

SiT5812, a member of SiTime’s Epoch Platform™ MEMS OCXO family, maximizes service continuity with best-in-class time accuracy in real world environments. Designed to solve long-standing problems of quartz OCXOs, the Epoch Platform OCXOs are resilient to thermal shock, airflow, and vibration. SiT5812 simplifies and expedites the design process with 25x less volume and 3x lower power, in addition to leading environmental resilience which eliminates the need for a protective cover. SiTime’s silicon manufacturing process ensures the highest quality with shorter lead times for a robust supply chain.

The SiT5812 is the industry’s smallest OCXO (9 mm x 7 mm) to offer ±1 ppb over-temp stability, ±0.01 ppb/°C typical frequency slope (dF/dT), and up to 12 hours of time holdover. It's the first OCXO in its class to offer a temperature range as wide as -40°C to 95°C. 

Related Blog: The Evolution of Precision Timing Solutions

特性 Features

12-Hour Holdover in real world conditions for 2x better service continuity
• ±0.1  ppb/day aging 
• Inclusive of an 8°C temperature change with ITU-T recommended profile and 1 m/s airflow

Exceptional dynamic stability under airflow, fast temp. ramp
• ±1 ppb over-temp. stability from -40 to 95°C 
• ±0.01 ppb/°C frequency slope (ΔF/ΔT) -- Ensures system-level quality of service for telecom and networking equipment in hostile environments
• 4E-12 HDEV at 10 second averaging time

3x lower power and 25x less volume for compact edge and datacenter devices
• 460 mW typical power consumption (3.3V)
• Robust 9.0 x 7.0 x 3.6 mm package

Best phase noise under vibration
• Minimizes call and/or link drops in high-vibration environments

No activity dips or microjumps
• Eliminates any need for costly screening or burn-in tests

On-chip power-supply noise filtering for excellent PSNR
• Reduces BOM by eliminating a dedicated LDO for OCXO

LVCMOS or clipped sinewave output
• Optimizes for best balance between EMI and jitter

Rich programmable features
• Any frequency between 60 to 220 MHz
• 2.5, 2.8, and 3.3V power supply options 

Digital frequency tuning through I2C and SPI
• Large pull range from ±3.125 to ±400 ppm
• 5E-14 frequency pull resolution
• Eliminate frequency shift caused by board noise

Superior reliability – reduces field failures and repair costs due to clock components
• 1 billion hours MTBF
• Lifetime warranty

应用 Application

• 5G Infrastructure
• 4G / 5G RRH, DU
• ITU-T G.8273.2 Class D
• Small Cells
• Datacenter Switches & Routers
• Core & Edge Routers
• Optical Transport (OTN, OLT, etc.)
• Timing Servers
• Test & Measurement
• IEEE 1588 Boundary Clocks & Grandmasters
• SONET/SDH Stratum 3E
• GNSS Disciplined Timing Modules