A Note From the Editor

This month, I’m very pleased to start with something both special and unexpected. I recently received a letter from a previous Analog Dialogue editor, Dan Sheingold. I’d like to share it with you.

Congratulations to Analog Devices on 50 years of publishing Analog Dialogue.

It’s been my pleasure to have chronicled ADI’s technological progress as editor during many of those years (from 1969 to 2013), during which the company’s sales grew from less than $10 million to almost $3 billion and the product line burgeoned from hand-wired operational amplifiers to thousands of analog, digital, A-D-A, MEMS, RF, DSP, and other products, largely embodying IC technologies.

The company’s focus is to create and build innovative, reliable products that are vital to our customers’ businesses. Over the years, this approach has led to virtual partnerships with many of our customers, in which our technical support—through online engineers, of course—but principally through publications (tutorials, technical data, application notes, handbooks, and Analog Dialogue)—has become key.

The role of Analog Dialogue has been to help engineers design better products and systems, through our cultivating awareness of, promoting understanding about, and furnishing information essential to creating new applications for Analog Devices products. We’ve sought to produce readable and accurate technical material that is free from hype.

Now retired, I’m happy to see that Analog Dialogue continues—alive and well. My best wishes go to Bernhard, to ADI, and especially to the readers of Analog Dialogue—whom I’ve sought to inform and educate during all those years.

Dan Sheingold
July 15, 2017

Coincidently, Dan is celebrating his 89th birthday this month. Happy birthday, Dan!

Back to our articles in this issue of Analog Dialogue:

Keith Benson discusses new approaches with GaN in power amplifier designs. He looks at products that demonstrate the possibilities of GaN technology, including covering wide bandwidths and providing high power and efficiency. Keith is our director for RF and microwave amplifier products, working out of our office in Chelmsford, MA.

Tyler Jesiel introduces us to SNAP sensors working in combination with our Blackfin® technology—a mix of logarithmic imaging and node analytics in the Internet of Things (IoT). By bringing in-depth video processing and analytics to the node, it will be possible to dramatically reduce the amount of data transmission into the cloud.

I hope you had a chance to read our article from the August issue featuring products from Linear Technology and Analog Devices. We continue the series this month with the combination of a precision op amp with great linearity driving a precision 16-bit ADC, complementing the linear requirements for excellent ac performance applications. Our author, Clarence Mayotte, is a specialist in mixed-signal applications and also works on the continuous development of PScope, the software used for various pipeline and SAR ADCs.

A “Low Power, Low Cost, Differential Input to Single-Ended Output Amplifier,” from Jordyn Rombola and Chan Trau, is the title and topic of this month’s RAQ. The article asks: How do I make a low cost, low power, differential input into a single-ended output amplifier? Using a differential to single-ended application, the differential amplifier rejects the common-mode voltage and the remaining voltage is amplified and presented on the amplifier output as a single-ended voltage. Jordyn and Chan are product engineers for instrumentation applications.

Our StudentZone article concentrates on instrumentation amplifiers. How easy is it to drive one of the internal amplifers into saturation? ADI’s online graphical tool, the Diamond Plot Tool, helps answer this question by calculating the output signal independent of the input voltage, reference, and gain. This is Christoph Kämmerer’s second article about online tools. He is a field application engineer specializing in emerging applications.

And as we have for 50 years, we 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.