編集後記

Welcome to the December issue of Analog Dialogue.

It is surprising how quickly a year goes by. Including this Analog Dialogue issue, you have received a total of 60 technical articles on varying topics throughout the year. As ADI gains momentum not only as a semiconductor supplier but also as a systems and solutions provider, I look forward to keeping you up to date on the latest design tips, technology updates, and news about analog and mixed-signal products and solutions, on different categories you might be interested in, not aware of, or would not expect from ADI. And as always, in this busy time, we wish you a calm December, a nice and peaceful holiday break, and a good start to the year 2020.

And now, back to the articles from the Analog Dialogue.

Earthquakes pose a major threat for densely populated areas with commercial and residential structures. As urban centers grow, traditional instruments used for seismic monitoring are becoming less viable due to high cost and complexity. The use of MEMS accelerometers and rugged, small geophones have enabled the development of a low cost, Internet of Things (IoT) solution. Current technology in active components and converters allows these sensors to achieve modern instrument standards. MEMS sensors provide a simple but reliable instrument design solution for seismic sensor network applications.

The second article will examine the basics of time of flight (ToF) depth sensing, the two dominant methods for ToF depth sensing, and how other depth sensing technologies compare. In this article you will learn about ADI’s 3D depth sensing technology, which includes a complete ToF signal processing device that integrates a depth processor that processes the raw image data from a VGA CCD sensor into depth/pixel data.

Our next article features the basics of using LTspice®, Analog Devices’ general-purpose SPICE (Simulation Program with Integrated Circuit Emphasis) platform. LTspice is used to draft, probe, and analyze the performance of circuit designs. The platform includes a schematic editor and waveform trace viewer that are simple to use once you learn some basic commands. This article will get you up to speed on creating simulations with this efficient tool.

This month’s Rarely Asked Question asks: “Can I access a nonstandard SPI interface with my MCU?” Many current precision ADCs have SPI, or another serial interface to communicate with controllers including MCUs, DSPs, or FPGAs. However, some new ADCs have a serial peripheral interface but use a nonstandard 3-wire or 4-wire SPI as a slave to achieve faster throughput. This article explains how to design a microcontroller SPI for ADC configuration and code reading.

Lastly, the ADALM2000 StudentZone series continues with Zener diode regulators. A voltage regulator is a circuit used to maintain a constant output voltage at a load independent of changes in the load current. The Zener diode regulator offers a very simplified way to maintain the load voltage at the same value. Doug Mercer and Antoniu Miclaus will continue with this ADALM2000 series topic in 2020.

And as we have for 53 years, we invite you to be part of the dialogue in Analog Dialogue. You can get in touch through our blogFacebook page, or email. Let us know how we’re doing and what you’d like to see from us in the coming months.