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ICS840004-01 Datasheet Crystal-to Lvcmos/lvttl Frequency Synthesizer

Manufacturer: Integrated Circuit Systems

Overview: PRELIMINARY Integrated Circuit Systems, Inc. ICS840004-01 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY.

General Description

The ICS840004-01 is a 4 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet HiPerClockS™ reference clock frequencies and is a member of the HiPerClocksTM family of high performance clock solutions from ICS.

Using a 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0): 156.25MHz, 125MHz, and 62.5MHz.

The ICS840004-01 uses ICS’ 3rd generation low phase noise VCO technology and can ..

Key Features

  • Four LVCMOS/LVTTL outputs, 15Ω typical output impedance.
  • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input.
  • Output frequency Range: 56MHz - 175MHz.
  • VCO Range: 560MHz - 700MHz.
  • RMS phase jitter at 156.25MHz (1.875MHz - 20MHz): 0.52ps (typical) design target Phase noise: Offset Noise Power.

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