Volume 47 — June 2013

Timely Information

Application Notes

Circuits from the Lab

eBooks and Printable

EngineerZone

New-Product Briefs

Rarely Asked Questions

Technical Articles

Webinars

Timeless Information

Analog Devices

eNewsletters

Social Media

Technical Books

Feature Articles: Products, Applications, Technology, and Techniques

Voltage Reference Design for Precision Successive-Approximation ADCs

The precision of a high-resolution successive-approximation ADC depends on the accuracy, stability, and drive capability of its voltage reference. The reference sees a dynamic load, so it must be able to handle time- and throughput-dependent currents. The best performance can usually be achieved with an external reference, so this article looks at the challenges and design requirements.

Safeguard Your RS-485 Communication Networks from Harmful EMC Events

RS-485 links must work in harsh environments, with large transient voltages caused by lightning strikes, electrostatic discharge, and other electromagnetic phenomenon, so they must meet standards for electrostatic discharge, electrical fast transients, and surge. This article describes these transient types and presents EMC compliant solutions for three different cost/protection levels.

...Recent Feature Articles: Products, Applications, Technology, and Techniques

Feature Articles: Design Ideas, Tutorials, Measurement Techniques

Multipliers vs. Modulators

Modulators are closely related to multipliers, but the output of a multiplier is the product of its inputs, while the output of a modulator is the product of the signal on one input and the sign of the signal on the other input. The modulation function can be modeled by an amplifier whose gain is switched positive and negative by a comparator on its carrier input; or a multiplier with a limiting amplifier between the carrier input and one of its ports.

Programmable-Gain TIAs Maximize Dynamic Range in Spectroscopy Systems

Precision instruments that measure physical properties using a photodiode or other current-output sensor often include a transimpedance amplifier (TIA) and a programmable-gain stage to maximize dynamic range. This article shows the benefits and challenges of implementing a single-stage programmable-gain TIA to minimize noise while maintaining high bandwidth and accuracy.

...Recent Feature Articles: Design Ideas, Tutorials, and Measurement Techniques