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Volume 50 — September 2016

Timely Information

Application Notes

Circuits from the Lab

New Product Briefs

Rarely Asked Questions

Technical Articles

Webcasts

  

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

Where Zero-IF Wins: 50% Smaller PCB Footprint at ⅓ the Cost

Zero Intermediate Frequency (ZIF) transceiver architecture is a key enabler and optimal solution for high-performance software-defined radio signal chain integration. But to achieve this, certain limitations in the ZIF approach had to be overcome in order to meet the performance, agility, and flexibility demanded by today’s high-end wideband wireless applications. Those limitations have been solved through innovation and the author walks through the architecture and performance data of a high-performance ZIF transceiver implementation.

Interleave

RF Transceivers Provide Breakthrough SWaP Solutions for Aerospace and Defense

Doing more with less is a mandate in military system design these days and reductions in SWaP (Size, Weight, and Power) is a key system design requirement. The new generation of Integrated RF agile wideband transceivers enable SWaP reduction in many military applications. In this article’s authors words, “The next generation aerospace and defense platforms are demanding a new approach to RF design, one where several square inches of an existing platform are integrated into a single device. Where the boundary between software and hardware is blurred.” This article explores an integrated programmable RF TRx signal chain solution that addresses SWaP reduction.

Common Sense for Current Sensing

I need to measure a current but I don’t know which amplifier to use. Where do I start?

 

Interleave

Integrated Capacitive PGAs in ADCs: Redefining Performance

For many applications, capacitive programmable gain amplifiers (PGAs) offer better performance than traditional resistive PGAs. For instance, they provide higher common-mode voltage rejection of analog input signals which is important in sensor applications. This article describes how a chopped capacitive amplifier operates and highlights the benefits of this architecture when a small signal from the sensor needs to be amplified close to the rails. Application examples analyzed include temperature measurement (RTDs or thermocouples) and Wheatstone bridges.

Interleave

Crossing a New Frontier of Multiband Receivers with Gigasample ADCs—Part One

Backhaul service providers who must respond to market demands for faster data rates and cheaper services, are confronted with a dichotomous situation: faster data rates mean more bandwidth, which requires faster processing and increased system costs. The solution lies in RF sampling ADCs which integrate custom digital processing blocks to lower data rates, enabling the use of lower-cost FPGAs as processors. This article will discuss a use case for a multiband radio receiver design for TDD LTE bands 34 and 39, based on the AD9680 RF ADC.

Choosing a Precision Op Amp? Trust Goldilocks

I’m selecting an op amp for my precision signal path. Isn’t faster always better?

 

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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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