340 to 725 MHz I2C/SPI Programmable Oscillator

The SiT3522 is an ultra-low jitter, user programmable oscillator. This device is based on SiTime's Elite Platform™ that utilizes unique DualMEMS™ temperature sensing and TurboCompensation™ technology to deliver exceptional dynamic performance, making it:

  • Resistant to airflow and thermal shock
  • Resistant to shock and vibration
  • Superior power supply noise rejection

The device supports two in-system programming options:
   1) Any-frequency mode to reprogram the clock output to any frequency between 340 MHz to 725 MHz
   2) Digitally controlled oscillator (DCO) mode to steer or pull the clock up to ±3200 ppm

Combined with wide frequency range and user programmability, this device is ideal for telecom, networking and industrial applications that require a variety of frequencies and operate in noisy environments.

 

I2C/SPI Programmable Oscillators
Oscillator Type I2C/SPI ISP XO-DE
Frequency 340 to 725 MHz
Frequency Stability (ppm) ±20, ±25, ±50
Operating Temperature Range (°C) -20 to +70, -40 to +85
Output type LVPECL, LVDS, HCSL
Package Type (mm²) 5.0 x 3.2 10-pin
Phase Jitter (RMS) ≤ 0.23 ps
Features In-System Programmable via I2C/SPI
Voltage Supply (V) 2.5 to 3.3
Pull Range (ppm) ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1200, ±1600, ±3200
Availability Production

In-system programmable from 340.000001 MHz and 725 MHz via I2C/SPI

Digital frequency pulling (DCO) via I2C/SPI

  • Output frequency pulling with perfect pull linearity

  • 13 programmable pull range options to ±3200 ppm

  • Frequency pull resolution as low as 5 ppt (0.005 ppb)

Dynamic performance

  • 0.1 ppb/g, superior shock and vibration resistance

  • No activity dips or micro jumps

Integrated LDO for on-chip power supply noise filtering

  • 0.05 ps/mV power supply noise rejection (PSNR)

  • Reduces BOM by eliminating a LDO

Programmable LVPECL, LVDS, or HCSL output

  • Programmable LVPECL, LVDS Swing

  • LVDS Common Mode Voltage Control

  • Optimizes signal integrity

Superior reliability

  • 1 billion hours MTBF

  • Lifetime Warranty: Reduces repair costs and field failures due to clock components

  • 10G to 100G Ethernet
  • SONET
  • Storage and servers
  • 测量与测试

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