SiT7202数据手册SiTime中文资料规格书

描述 Description

The SiT7202 is a commercial-off-the-shelf (COTS) ruggedized MEMS TCXO that is ideal RF systems. This precision timing device combines ±100 ppb frequency stability over -40 to 105°C with RF-quality phase noise, ±110 fs phase jitter and low g-sensitivity of 0.01 ppb/g in a compact 5035 ceramic package. The SiT7202 Super-TCXO can replace a fragile and bulky OCXO in equipment designed for rough environments.

This Low Noise Super-TCXO has excellent Allan deviation rated at 1E-11 to reduce error rate in processing signals with long integration time such as encrypted signals. SiT7202 is available with ±400 ppm frequency tuning with 5E-14 resolution through I2C and SPI.

Related Blog: New Low-Phase-Noise High-Stability MEMS Super-TCXOs Replace Quartz OCXOs in RF Systems

特性 Features

Up to 60 MHz output frequency
• Eliminates need for frequency multipliers

Exceptional dynamic stability under airflow, fast temperature ramp and vibrations
• ±100 ppb over-temp. stability from -40 to 105°C
• ±1 ppb/°C frequency slope (ΔF/ΔT), 1°C/min. ramp
• Maintains system performance under rough temperature perturbations
• 0.01 ppb/g g-sensitivity 
• 1E-11 ADEV at 10 second average time
• No activity dips or micro-jumps -- not present in MEMS timing technology
• Resilient to board bending

RF-grade phase noise, 20x better under vibration
• -143 dBc/Hz at 10 kHz offset (122.88 MHz nominal)
• Phase noise virtually unchanged under vibrations

0.2 ps/mV power supply noise rejection (PSNR)
• On-chip regulators eliminate the need for external LDOs and simplify the BOM

Factory programmable for short lead time
• Any frequency from 60 to 220 MHz
• 1.8 to 3.3 V supply voltage
• LVCMOS or Clipped sinewave output, optimizes for best balance between EMI and jitter

Digital frequency tuning through I2C or SPI
• ±400 ppm pull range with 5E-14 resolution: Smooth frequency transition due to resolution below ADEV
• Eliminate frequency shift caused by board noise
• Can eliminate the need for a data converter

Superior reliability
• 1 billion hours MTBF
• 20,000 g shock survivability
• Lifetime warranty reduces repair costs and field failures due to clock components

应用 Application

• Ruggedized Applications
• Manpack Radios
• Radar
• GPS / GNSS Modules
• SatCom Terminal
• LEO SatCom
• Electronic Defense
• Avionics