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Features

  • Four LVCMOS/LVTTL outputs, 17Ω typical output impedance
  • Selectable crystal oscillator interface or LVCMOS single-ended input
  • Supports the following input frequencies: 212.5MHz, 159.375MHz, 156.25MHz, 106.25MHz and 53.125MHz
  • VCO range: 560MHz - 700MHz
  • RMS phase jitter @ 212.5MHz (637kHz - 10MHz):
    0.49ps typical, VDDO = 3.3V
    Phase noise:
    Offset               .   Noise Power
    100Hz ............... -88.8 dBc/Hz
    1kHz ................. -109.0 dBc/Hz
    10kHz ............... -116.1 dBc/Hz
    100kHz ............. -117.5 dBc/Hz
  • Full 3.3V or mixed 3.3V core/2.5V output supply mode
  • 0°C to 70°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Description

The 840004 is a 4-output LVCMOS/LVTTL synthesizer optimized to generate Ethernet reference clock frequencies. Using a 26.5625MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0): 212.5MHz, 159.375MHz, 156.25MHz, 106.25MHz, and 53.125MHz. The 840004 uses our third generation low phase noise VCO technology and can achieve 1ps or lower typical random rms phase jitter, easily meeting Ethernet jitter requirements. The 840004 is packaged in a small 20-pin TSSOP package.

Part NumberStatusSamplesStockPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Qty. per Reel (#)Qty. per Carrier (#)Pb (Lead) FreePb Free CategoryTemp. Range (°C)
840004AGLFObsoleteN/AOut of StockTSSOP20#Tube1074#Yese3 Sn0 to 70°C
840004AGLFTObsoleteN/AOut of StockTSSOP20#Reel13000#0Yese3 Sn0 to 70°C