Auto-tuning 48MHz Oscillator for USB device without XTAL

CT20101 is an auto-tuning oscillator delivering a precise 48 MHz clock frequency requested by any  USB1.1 or USB2.0 low and full speed USB application. It’s has been designed specifically to minimize the overall system bill-of-material costs and board area by replacing the expensive x-tal device with common and cheap RC external components. Moreover It doesn't require any expensive and time consuming fab or end-of-line trimming.
CT20101 can be easily integrated in any USB device and it can be interfaced with the most diffused USB-PHY and USB controller.

For more information, 

  • 48MHz Oscillator for USB
  • 3.3V Supply
  • Auto Tuning 0.25% precision
  • USB2.0/1.1 compliant
  • Low/full speed applications
  • No external crystal
  • 2 external passive components
  • No fab trimming required


  • Portable devices
  • Industrial controllers
  • Medical devices
  • Toys


  • Datasheet
  • Integration guidelines
  • GDS2 and LVS Netlist
  • Footprint (.LEF)
  • Test Specifications
  • HDL and liberty model


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