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Si549 - Crystal Oscillator

Description

Selectable via ordering option OE = Output enable; FS = Frequency Select; NC = No connect GND = Ground CLK+ = Clock output CLK- = Complementary clock output.

Not used for CMOS.

Features

  • I2C programmable to any frequency from 0.2 to 1500 MHz with < 1 ppb resolution.
  • Ultra low jitter: 95 fs Typ RMS (12 kHz.
  • 20 MHz).
  • Configure up to 4 pin-selectable startup frequencies.
  • I2C interface supports 100 kbps, 400 kbps, and 1 Mbps (Fast Mode Plus).
  • Excellent PSRR and supply noise immunity:.
  • 80 dBc Typ.
  • 3.3 V, 2.5 V and 1.8 V VDD supply operation from the same part number.
  • LVPECL, LVDS, CML, HCSL, CMOS, and Du.

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Full PDF Text Transcription

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Ultra Series™ Crystal Oscillator Si549 Data Sheet Ultra Low Jitter I2C Programmable XO (95 fs), 0.2 to 1500 MHz The Si549 Ultra Series™ oscillator utilizes Silicon Laboratories’ advanced 4th generation DSPLL® technology to provide an ultra-low jitter, low phase noise clock at any output frequency. The device is user-programmed via simple I2C commands to provide any frequency from 0.2 to 1500 MHz with <1 ppb resolution and maintains exceptionally low jitter for both integer and fractional frequencies across its operating range. The Si549 offers excellent reliability and frequency stability as well as guaranteed aging performance.
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