A Note From the Editor

Reading through this month’s article from Robert Kiely about the basics of 1/f noise, I remember the printed seminar books Analog Devices used during our seminar tours in the ʼ80s and ʼ90s. While printed versions of those books may be rare, they are still available online. Just search for Seminar on analog.com. There’s quite a lot of basic electronics know-how in those books.

The technical article from Robert Kiely, “Understanding and Eliminating 1/f Noise,” is an extension of the RAQ back in the February issue. Robert offers more detail about what 1/f noise is and how to reduce it in precision measurement applications, as 1/f noise cannot be filtered out.

The May issue of Analog Dialogue also includes the article “Increasing Channel Density Using Innovative, SPI Controlled, Best-in-Class Performance ADI Precision Switches” by Stephen Nugent. The article explains how to decrease the required board space for a parallel bus by using SPI controlled switches and daisy-chaining the switches.

This month also presents another interesting RAQ: “Sometimes a Signal Needs to Ride the Rails.” It answers the question: “I’m designing a signal conditioning block for a precision sensor analog front end. Should I use an op amp with rail-to-rail input?”

Here’s another question: have you ever thought about grounding and decoupling? Perhaps this subject is new for you, or you just need a good refresher. In the StudentZone, part 3 of Walt Kester’s series on the subject discusses practical techniques for ensuring your circuits perform as expected.   

As always, I invite you to be part of the dialogue in Analog Dialogue. You can get in touch through our blog, Facebook page, or email. Let us know how we’re doing and what you’d like to see from us in the coming months.