Products

M31 Clocking IP
– M31 High Performance Fractional PLL IP

Overview

High Performance Fractional PLL is a general purpose frequency synthesizer with input reference frequency range from 10 to 240 MHz and 3:1 output frequency range. The PLL core is a typical Type-II PLL. The fractional part of the output frequency is achieved by using a programmable 3rd-ord sigma delta modulator. The PLL core operates on IO supply voltage for excellent supply rejection in noisy SoC applications. It is designed for SerDes, ADC, DAC…etc high performance applications.

Highlights

  • Supports wide input frequency range: 5MHz ~ 100MHz
  • Supports 2:1 output frequency range allows optimization
    for power and jitter performance
  • 24 bit fractional accuracy
  • Supports Spread Spectrum Clocking
  • Adjustable Loop parameters
  • Lock Detect Signal indicates when frequency lock has been
    achieved
  • Embedded frequency meter circuit for mass production test
  • Embedded continuous monitoring watchdog circuit for
    automotive applications
  • Low Area
  • PLL Core Area less than 150um x 150um
  • High Performance/Power Ratio
  • 6mA for 6GHz, Intrinsic VCO Phase Noise @ 1MHz offset = -89dBc/Hz
  • 3mA for 3GHz, Intrinsic VCO Phase Noise @ 1MHz offset = -92dBc/Hz

Please contact sales@m31tech.com.

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