• Functional Safety and the Cloud - Part 1

    In this two-part blog I am going to outline my own journey with IoT, IIoT, the cloud and cloud to cloud communications. IEC 61508 was published in 1998 and then revised in 2010. There is very little on it regarding new technologies including the clou...
    • 15 Jan 2019
  • De-rating: Advice from NASA & Irish Legend

    For the second blog in a row I must advise you not to miss the video at the end even if your tire of the main topic before the end of the blog. It’s a good one and shows a man in action who really believes in safety. I do admit however it has n...
    • 3 Jan 2019
  • Zero Trust, a Better Way

    Network Perimeter – The Wall is Coming Down. The Digital Revolution is driving an unprecedented level of connectivity outside the traditional Enterprise Network. Here are some examples that illustrate the point: 68% of business application wor...
    • 20 Dec 2018
  • Verification & Validation: Important yet Separate

    Verification and validation are important but separate topics within functional safety. However, the terms of often misused and mixed up including in a recent draft functional safety standard I was reading. In a nutshell, validation is the final veri...
    • 11 Dec 2018
  • Technologies that will Shape our Lives in 2019

    by Vincent Roche, President & CEO, Analog Devices, Inc. As we turn our focus to 2019, it is natural to take stock of the events and trends of the past year and consider how they will influence and shape the coming year. As in years past, ...
    • 30 Nov 2018
  • Digital Freedom: Cybersecurity in an IoT World

    The Internet of Things (IoT) – A Deluge of Devices. By all accounts, there will be 30-50 billion internet-connected devices by 2020. This is a massive cyber-attack surface to protect. The number of devices expands by the thousands every day; cr...
    • 29 Nov 2018
  • Software Tools: It's as Easy as T1, T2, T3

    You couldn't build a house without tools and software is no different. IEC 61508 talks about two types of software tools. Online tools which run as part of the application and offline tools used during the development or manufacturing phases. Onl...
    • 28 Nov 2018
  • Revamp Your Boring Profile

    If you read my last blog, your notifications should be completely tailored to your communication preferences for EZ. We are now excited to unveil another customizing opportunity for our members. YOUR PROFILE! Our members view each...
    • 19 Nov 2018
  • Digital Freedom: Cybersecurity that Matters

    The Digital Revolution is here. It’s been called the Internet of Things (IoT), or even the Internet of Everything. Applied to Industry, it’s called the Industrial Internet of Things (IIoT), Industry 4.0, and the Digital Enterprise. Regard...
    • 8 Nov 2018
  • How to Architect Software for Safety

    The temptation to jump in and start coding is always great. For both safety and security if you take this approach you may pay for it later. Designing a proper software architecture can... Simplify interfaces Reduce the amount of code which has to b...
    • 6 Nov 2018
  • Functional Safety for Software

    I won’t go so far as to say that functional safety guys hate software but sometimes you would be forgiven for thinking so. From a safety point of view, software is deemed to have too many states and is said to be un-testable. Figure 1 - A book...
    • 22 Oct 2018
  • EZ Tell Me Only What I Want to Know

    In our last blog, we walked you through the new look of EngineerZone (EZ), offered some helpful tips, and showed you what you could expect as a new or returning EZ user. One tip, in particular, was how to receive and customize email notification...
    • 11 Oct 2018
  • Annex E – Requirements for On-Chip Redundancy

    Some of the most important semi-conductor information in IEC 61508:2010 is in in part 2 Annex E. This annex was added in the 2010 version of the standard and will be revised for revision 3 due out in the 2021/22 time frame.       &nbsp...
    • 9 Oct 2018
  • The AD7770 Another Interesting Part for Functional Safety Applications:

    The AD7770 has 8 simultaneously sampling analog-to-digital converters with each channel having its own mux, PGA and SINC filter. The AD7770 is specified down to DC. However what is most eye catching from a functional safety point of view is...
    • 25 Sep 2018
  • A Meeting of Innovative Minds: Deep Tech Startups, VC Backers & Corporate Innovation Labs

    This summer, I participated in a thought-provoking panel discussion at our newly relocated Analog Garage in downtown Boston with members of our local startup and VC communities. Moderated by Matt Duffy, head of marketing for weather technology compan...
    • 18 Sep 2018
  • Navigating the New EngineerZone

    We recently unveiled the new EngineerZone (EZ) and we are jumping at the opportunity to walk you through the new look, offer some helpful tips, and show you what you can expect as a new or returning EZ user.            &...
    • 17 Sep 2018
  • An Interesting Part for Functional Safety Applications: AD7124

    The AD7124 is a 24 bit sigma-delta ADC including on-chip muxes, PGA (programmable gain amplifier), voltage references, buffers, a stable clock, voltage regulators and lots of diagnostics. Figure 1 - block diagram of the AD7124-4...
    • 13 Sep 2018
  • Hardware Reliability Metrics - PFH and PFD

    This blog is a follow on to the last one which covered demand modes and particularly low and high demand mode. This description is designed to fit in the length of a blog and target enthusiastic amateurs in functional safety, experts might want more ...
    • 10 Sep 2018
  • Two Crucial Components for Your High Performance Audio Systems

    High resolution, high fidelity and high quality are some typical jargon used in the audio industry, but they truly are essential features for an audiophile. Whilst they look so attractive, they are not so easy to achieve unless the right components...
    • 21 Aug 2018
  • Low, High & Continuous Mode Safety Functions

    In my last blog on soft errors I promised that the next blog would be on the topic of PFH and PFD. However, since that promise it occurred to me that I should first cover low and high demand mode. Within IEC 61508 there are basically two types of saf...
    • 2 Aug 2018
  • Enabling Flexible Multi-channel Battery Formation and Test

    Lithium-Ion batteries are produced in a variety of form factors and capacities and are used to provide power in a range of applications from cell phones, laptop computers, electric vehicles, to energy storage. The cells used in these applications c...
    • 31 Jul 2018
  • Soft Errors - Hard Facts

    I am long overdue to include a blog on the functional safety requirements for software and indeed the functional safety requirements for Verilog code however this isn’t that blog. By soft errors I mean bit flips in RAM or FF that are not caused...
    • 17 Jul 2018
  • The Secret Sauce of Functional Safety

    Is there a secret sauce for functional safety? I have been asked if there was only one thing from functional safety that I think should be applied to every product development, what would it be.  My answer: Rigorous requirements management. Req...
    • 3 Jul 2018
  • Functional Safety for Lifts (elevators)

    I recently came across a series of standards for lifts (elevators), escalators and moving walkways. I thought it was a good example of a sector specific standard. The standard in question is ISO 22201-1 and was first published in 2017. It uses SIL le...
    • 19 Jun 2018
  • Functional Safety: Recommended Reads

    While I am the functional safety guy for Analog Device’s industrial products I find it useful to read books related to many application areas. Often what is poorly explained in one book is very well explained in a book from another domain. I fi...
    • 5 Jun 2018