Socionext America

Provider of industry-leading networking & imaging technologies & solutions

Socionext America, Inc.
  • About
    • Overview
    • News
    • Events
    • Careers
    • Locations
    • Blog
  • Products & Services
    • 3D Audio Software
    • Advanced Packaging
    • Edge Server – SynQuacer™
    • General Purpose Processors
    • Graphics
    • High-performance & Custom ASIC
    • Image Processors – Milbeaut®
    • Networking ASIC
    • Sensors
    • Video Processing Codecs
    • Visual Systems
  • Solutions
    • Audio
    • Automotive
    • Consumer
    • Data Center
    • Healthcare
    • Industrial
    • Internet of Things (IoT)
    • Security
    • Telecom / Networking
    • Video / Broadcasting
  • Support
    • Contact Us
    • Sales Support
    • Document Search
Home > Press Releases > Tokyo Institute of Technology and Socionext Inc. Announce World’s Smallest Digital PLL, Opening the Door to Advanced System-on-Chip Technology

Tokyo Institute of Technology and Socionext Inc. Announce World’s Smallest Digital PLL, Opening the Door to Advanced System-on-Chip Technology

Press ReleasesFebruary 10, 2020

Share this post

Share TweetShare

“Fractional-N PLL”  Ideal for New Generations of AI, 5G, IoT Applications

TOKYO and SANTA CLARA, Calif., and February 10, 2020 --- Scientists at Tokyo Institute of Technology (Tokyo Tech) and Socionext Inc. have designed the world’s smallest all-digital phase-locked loop (PLL), the two organizations announced today. All-digital PLLs enable new, high-performance system-on-chip (SoC) devices to serve emerging artificial intelligence, 5G cellular communications, and  Internet-of-Things applications.

Reducing digital PLL size and improving performance is a significant step in enabling these next-generation applications, and creating a pathway to an SoC that can be fabricated in a small, 7-nm form factor, and in the coming generation of 5-nm technology.

Easy to Adopt Fractional-N PLL for Miniaturized ICs
As a core building block of SoC devices, the PLL synchronizes with the frequency of a reference oscillation and outputs a signal with the same or higher frequency, generating ‘clocking signals ‘ to provide a precise timing reference for the harmonious operation of digital devices.  Traditional PLLs require analog components that are bulky and difficult to scale down; digital PLLs eliminate those restructions.

Scientists at Tokyo Tech and Socionext Inc., led by Prof. Kenichi Okada, implemented a ‘synthesizable’ fractional-N PLL, which requires only digital logic gates, making it easy to adopt in conventional miniaturized integrated circuits.

Okada and the team used several techniques to minimize the required area of the synthesizable PLLs, including power consumption and jitter, which is defined as the unwanted time fluctuation when transmitting digital signals. To decrease the required footprint, the design team  employed a compact ring oscillator that can be easily scaled down. To suppress jitter, they reduced the phase noise (random fluctuations in a signal) of the ring oscillator, using ‘injection locking’, which is the process of synchronizing an oscillator with an external signal whose frequency, or multiple of it, is close to that of the oscillator. This was achieved over a wide range of frequencies. The lower phase noise, in turn, enables reduced power consumption.

According to Professor Okada, the design of the synthesizable PLL is superior to all other current state-of-the-art PLLs because it achieves the best jitter performance with the lowest power consumption and the smallest area (see Figure 1). “The core area is 0.0036 mm2, and the whole PLL is implemented as one layout with a single power supply,” said Okada.  Also, it can be built using standard digital design tools allowing for rapid, low-effort, and low-cost production, making it commercially viable.

Worlds smallest digital PLL
Figure 1. Photograph of a chip containing the proposed PLL
The entire all-digital PLL fits in a 50 × 72 µm2 region, making it the smallest PLL to date.

The synthesizable PLL can be easily integrated into the design of all-digital SoCs, making it valuable for developing the next-generation 5-nm semiconductor technology, an important factor for 5G, artificial intelligence, Internet of Things and other applications where high performance and low power consumption are critical.

Potential of Synthesizable Circuits
The contributions of this research go beyond these possibilities. “Our work demonstrates the potential of synthesizable circuits,” said Okada. “With the design methodology employed here, other building blocks of SoCs, such as data converters, power management circuits, and wireless transceivers, could be made synthesizable as well. This  greatly boosts design productivity and can reduce design efforts.”

Tokyo Tech and Socionext will continue their collaboration in this field to advance the miniaturization of electronic devices, enabling new technologies.

The research work was conducted in cooperation with TeraPixel Technologies Inc.

Reference

Authors: Bangan Liu1, Yuncheng Zhang1, Junjun Qiu1, Hongye Huang1, Zheng Sun1, Dingxin Xu1, Haosheng Zhang1, Yun Wang1, Jian Pang1, Zheng Li1, Xi Fu1, Atsushi Shirane1, Hitoshi Kurosu2, Yoshinori Nakane2, Shunichiro Masaki2, Kenichi Okada1
Title of original paper: A Fully-Synthesizable Fractional-N Injection-Locked PLL for Digital Clocking with Triangle/Sawtooth Spread-Spectrum Modulation Capability in 5 nm CMOS
 
Journal: IEEE Solid-State Circuits Letters
DOI: 10.1109/LSSC.2020.2967744
Affiliations: 1. Tokyo Institute of Technology, Tokyo, Japan

2. Socionext Inc., Yokohama, Japan

*Corresponding author’s email: okada@ee.e.titech.ac.jp

Contact
Emiko Kawaguchi
Public Relations Section,
Tokyo Institute of Technology
media@jim.titech.ac.jp
+81-3-5734-2975

Corporate Planning Office
Socionext Inc.
http://www.socionext.com/en/contact
+81-45-568-1006

About Tokyo Institute of Technology

Tokyo Tech stands at the forefront of research and higher education as the leading university for science and technology in Japan. Tokyo Tech researchers excel in fields ranging from materials science to biology, computer science, and physics. Founded in 1881, Tokyo Tech hosts over 10,000 undergraduate and graduate students per year, who develop into scientific leaders and some of the most sought-after engineers in industry. Embodying the Japanese philosophy of “monotsukuri,” meaning “technical ingenuity and innovation,” the Tokyo Tech community strives to contribute to society through high-impact research. www.titech.ac.jp/english/

About Socionext America Inc.

Socionext America Inc. (SNA) is the US branch of Socionext Inc. headquartered in Santa Clara, California. The company is one of the world’s leading fabless ASIC suppliers, specializing in a wide range of standard and customizable SoC solutions for automotive, consumer, and industrial markets. Socionext provides customers with quality semiconductor products based on extensive and differentiated IPs, proven design methodologies, and state-of-the-art implementation expertise, with full support. 

For product information, visit our website, e-mail sna_inquiry@us.socionext.com or call 1-844-680-3453. For company news and updates, connect with us on Twitter, Facebook and YouTube.

About Socionext Inc.

Socionext is a global, innovative enterprise that designs, develops and delivers System-on-Chip based solutions to customers worldwide. The company is focused on technologies that drive today’s leading-edge applications in consumer, automotive and industrial markets. Socionext combines world-class expertise, experience, and an extensive IP portfolio to provide exceptional solutions and ensure a better quality of experience for customers. Founded in 2015, Socionext Inc. is headquartered in Yokohama, and has offices in Japan, Asia, United States and Europe to lead its product development and sales activities. For more information, visit www.socionext.com.

All company or product names mentioned herein are trademarks or registered trademarks of their respective owners. Information provided in this press release is accurate at time of publication and is subject to change without advance notice.

Related Posts

Synopsys and Socionext Expand Collaboration to Deploy HBM2E IP for 5-Nanometer Process in AI and High-Performance Computing SoCs

Synopsys, Inc. and Socionext, Inc. today announced their collaboration to expand Socionext’s use of Synopsys’ broad DesignWare® IP to include Synopsys’ HBM2E IP for maximum memory throughput in AI and high-performance computing (HPC) applications.

Socionext Expands Leading Lineup of “Smart” Controllers, Featuring Enhanced Security Support for High-Resolution, Wide Format Displays

Socionext automotive display controllers provide low-cost, optimal safety functions for meter clusters. The new lineup of “smart” display controllers SC1701 and SC1702 delivers scalable in-vehicle remote display systems that achieve high levels of safety.

Socionext “cecTalker” HDMI Model Sample Now Available through Chip One Stop

“cecTalker HDMI Model” are now available through Chip One Stop, a leading online distributor of electronic components and semiconductors in Japan.

  • About
  • Products & Services
  • Solutions
  • Support
Terms of Use | Privacy Policy | Sitemap | Career

© Copyright 2020 Socionext America Inc.

Contact Rep - Thom Luke Sales, Inc.

Please complete the form below to send a message to Thom Luke Sales, Inc.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - MRB Sales

Please complete the form below to send a message to MRB Sales.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - Millennium Alliance Group

Please complete the form below to send a message to Millennium Alliance Group.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - SJ Assoc

Please complete the form below to send a message to SJ Associates.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - MRB Sales

Please complete the form below to send a message to MRB Sales.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Get in Touch with Us

  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Request Product Information (OLD FORM)

  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Request Product Information - Data Center (OLD)

Contact Rep - G2 Sales

Please complete the form below to send a message to G2 Sales.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - MMS Inc.

Please complete the form below to send a message to MMS Inc.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - Thorson Rocky Mountain

Please complete the form below to send a message to Thorson Rocky Mountain.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - CeeJay Micro

Please complete the form below to send a message to CeeJay Micro.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - Harper & Two

Please complete the form below to send a message to Harper & Two.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - Omega Electronic Sales

Please complete the form below to send a message to Omega Electronics.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - O'Donnell & Assoc.

Please complete the form below to send a message to O'Donnell & Associates.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.

Contact Rep - HLC

Please complete the form below to send a message to HLC Ltd.
  • By clicking the submit button, I am agreeing to receive communications from Socionext. Click for a full copy of the Privacy Policy and Terms of Use.