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Volume 50 — June 2016

Timely Information

Application Notes

Circuits from the Lab

New Product Briefs

Rarely Asked Questions

Technical Articles

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Products

Amplifiers

Analog-to-Digital Converters

Application Specific

Audio and Video Products

Broadband

Clock and Timing

Digital-to-Analog Converters

Interface and Isolation

Linear Products

MEMS

Optical

Power Management

Processors and DSP

RF and Microwave

Sensors

Switches and Multiplexers

  

Analog Dialogue--Since 1967

Feature Articles: Products, Applications, Technology, Design Ideas, Tutorials, and Measurement Techniques

 

A Note from the Editor

 

Interleave

ADSP-2157x: Single Chip Builds Home Theater Solution Based on Dolby Atmos/DTS: X Decoders

With the advent of revolutionary audio technologies—namely Dolby Atmos and DTS: X—that transform audio in home theaters into a life-like experience, the demands for processing power has significantly increased, requiring the utilization of multiple DSP devices. This article explores a new ADI single-chip DSP solution complete with software and hardware development tools, and its application in realizing the next-generation Dolby Atmos-based AVR that brings a completely immersive audio experience to the home theater.

Electromagnetic Flowmeters: Design Considerations and Solutions

There are multiple industry trends driving the need for a new flow measurement architecture, such as wastewater treatment plants, chemical/pharma plants, food and beverage processing, and pulp and paper production. These applications increasingly have the need to measure flow in the presence of high levels of solids, which is not easily achieved by most analog flow technologies. This articles focuses on the design considerations of implementing an electromagnetic flowmeter architecture as a solution that simplifies system design, improves performance, and lowers cost and power.

Who killed that component?

Why do unstressed components sometimes fail for no obvious reason?

 

Interleave

Op Amp Input Overvoltage Protection: Clamping vs. Integrated

In some applications, a situation may occur in which the inputs of an op amp get driven by voltages that exceed the level of the supply voltages—this is called an overvoltage condition. Overvoltage can result in certain aspects of the op amp’s electrical performance being shifted beyond its data sheet guaranteed limits; it can even cause permanent failure of the device. The challenge then is to add overvoltage protection (OVP) circuitry at the input of the op amp without adding errors that result in a loss of system precision. This article compares and contrasts two approaches to input overvoltage protection.

Designing for Low Noise Feedback Control with MEMS Gyroscopes

Noise in the output angular rate signals of a MEMS gyroscope, can have a direct influence over critical system behaviors, such as platform stability, and is often the defining factor in the level of precision that a control system can support. Understanding the motion-control system’s dependence on gyroscope noise behaviors has a number of rewards for the designer, such as being able to establish relevant requirements for the feedback sensing element or, conversely, analyzing the system-level response to noise in a particular gyroscope. This article focuses on developing the most appropriate criteria for MEMS gyroscope selection and considerations for preserving the available noise performance throughout the sensor’s integration process.

murphy

Who ate my dBs?

I am setting my signal generator to output a CW tone at a certain power, which per my math, should give a -1 dBFS signal at the ADC. However, I am seeing -15 dBFS! Who ate all of my dBs?

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Analog Dialogue is the technical magazine of Analog Devices. It discusses products, applications, technology, and techniques for analog, digital and mixed-signal processing.

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