pPLL05 Family — Low Power All Digital Fractional-N PLLs


  • IoT
  • Embedded
  • Moderate speed digital systems

Please send us a message to find out more or discuss how you can use pPLL05 in your project.


  • Small size  (< 0.01 sq mm)
  • Low Power (< 1.6mW)
  • Easy integration
  • Fractional Multiplication


pPLL05 is currently available in the following technologies:

Please ask if your preferred technology  is not on this list in case the website is not currently up to date. We can port any PLL to any technology on request.


Perceptia’s DeepSub™ pPLL05 is a family of low power, low voltage all digital PLL featuring low-jitter and compact area. It is suitable for IoT and embedded clocking applications in systems running below the nominal core voltage at frequencies up to 1.5GHz. It is suitable as a clock source for moderate speed microprocessor blocks and other logic.

Perceptia’s second generation pPLL05 family is available on technologies from 5nm to 40nm and across multiple foundry partners. We are continually expanding the range of technologies where it is silicon proven and can quickly port it to other technologies or foundries upon request.

To give IoT designers the maximum flexibility in managing power, pPLL05 is very small (< 0.01 sq mm) and low power (< 0.7mW in 22FDX). It is well suited to applications with a single low voltage power supply that the PLL shares with the blocks that use its output clock. Better jitter performance can be achieved if the pPLL05 has its own analog power supply.

pPLL05 integrates easily into any SoC design and includes all the views and models required by back end flows.

The pPLL05 is built using Perceptia’s second generation all digital PLL technology. This robust technology delivers identical performance across many processes, regardless of PVT conditions. It consumes a small fraction of the area of an analog PLL whilst maintaining comparable performance.

pPLL05 can be used as an integer-N PLL or as a fractional-N PLL. The fractional-N mode provides a high flexibility to choose the best combination of input and output clock frequencies at the system level.

Perceptia further provides integration support and offers customization and migration services. Please send us a message to find out more or discuss how you can use pPLL05 in your project.


  • Low power, suitable for IoT applications
  • Good jitter, suitable for clocking digital logic.
  • Extremely small die area (< 0.01 sq mm), using a ring oscillator
  • Output frequency can be from 1 to 400 times the input reference, up to 1.5GHz
  • Reference clock from 5MHz to 200MHz
  • Second-generation digital PLL architecture, providing integer and fractional multiplication
  • Primary PLL output running at the main DCO frequency for lowest noise clocking
  • Two further PLL outputs via separate postscalers
    • Post-scalers programmable from 1 to 2,040
  • Lock-detect output
  • Can generate a spread-spectrum clock from a clean reference
  • Oscillator output duty cycle better than 48 / 52%
  • Highly testable using industry standard flows
    •   ATPG vectors provided
    •   Specification of functional tests to supplement ATPG testing


  • Datasheet
  • Detailed Verilog behavioral model
  • Timing models
  • LEF5.6 abstract for floor planning/chip assembly
  • Integration Guide
  • DFT Guide
  • Integration support
  • Characterization report
  • GDSII layout macrocell
  • CDL netlist for LVS
  • DRC, LVS and SI verification reports
  • Netlist model with accompanying documentation allowing integration of the module in scan chains

Please send us a message to find out more or discuss how you can use pPLL05 in your project.