CT20101 is an auto calibrating oscillator delivering a precise 48 MHz clock frequency required by any  USB1.1 or USB2.0 low and full speed USB application.

It has been designed specifically to minimize the overall system bill-of-material costs and board area by not employing the expensive x-tal device. Fab trimming is required to tune a fully internal time reference (100KHz clock) and requires 4 bits.

CT20101 can be easily integrated in any USB device and it can be interfaced with the most diffused USB-PHYs and USB controllers.


  • 48MHz Oscillator for USB Devices
  • Single Supply
  • Auto Tuning 0.25% precision according to USB directives
  • USB2.0/1.1 compliant
  • Low/full speed applications
  • No external crystal
  • No external components
  • Voltage and current references, test infrastructures, included


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