• Part: ICS840021I
  • Manufacturer: Integrated Circuit Systems
  • Size: 223.09 KB
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ICS840021I Key Features

  • 1 LVCMOS/LVTTL output, 15Ω output impedence
  • Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal
  • Output frequency: 125MHz
  • VCO range: 560MHz to 680MHz
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz
  • 20MHz): 0.48ps (typical) (3.3V) Offset Noise Power 100Hz
  • 97.8 dBc/Hz 1kHz
  • 124.6 dBc/Hz 10kHz
  • 132.5 dBc/Hz 100kHz
  • 131.1 dBc/Hz

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ICS840021I Description

The ICS840021I is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from ICS. The ICS840021I uses a 25MHz crystal to synthesize 125MHz. The ICS840021I has excellent phase jitter performance, over the 1.875MHz 20MHz integration range.