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The 5076 series of miniature VCXO ICs provide a wide frequency pulling range, even when using miniature crystal units for which a wide pulling range is difficult to provide. They employ a recently developed varactor diode fabrication process that provides a wide frequency pulling range and good linearity without any external components. Also, they employ a regulated voltage drive oscillator circuit that significantly reduces current consumption, crystal current, and oscillation characteristics supply voltage dependency. The 5076 series are ideal for miniature, wide pulling range, low power consumption, VCXO modules.

Block Diagram


Key Features

  • VCXO with efficient integrated varactor
  • Regulated voltage drive oscillator circuit for reduced power consumption, crystal drive current, and oscillation frequency stability versus supply voltage
  • Wide frequency pulling range: ±160ppm(B1 version, f=27 MHz)
  • (Crystal: γ=300, C0=1.5pF)
  • Operating supply voltage range: 1.6V to 2.0V
  • Oscillation frequency range(for fundamental oscillation): 20 MHz to 55 MHz(varies with version)
  • Low current consumption: 0.5mA(B1 version, f=27 MHz, no load, VDD=1.8V)
  • Frequency divider built-in
  • Selectable by version: f0, f0/2, f0/4, f0/8, f0/16
  • Frequency divider output for 1.3 MHz(min) low frequency output
  • VC pin input resistance: 10MOhm(min)
  • CMOS output
  • Two types of pad layout selectable by mounting method
  • Ax version: for Flip Chip Bonding
  • Bx version: for Wire Bonding
  • Package: Wafer form, Chip form
  • -40 to 85°C operating temperature range


  • Communications infrastructure
  • Computers
  • Industrial
  • System Clocks


  • Small VCXO where board space is premium
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