from the Lab
and Video Products
Feature Articles: Products, Applications, Technology, Design Ideas, Tutorials, and Measurement Techniques
A Note from the Editor
What’s Up With Digital Downconverters – Part 1
Regardless of the end application, whether it is communications, aerospace/defense, or instrumentation, the frequencies
of interest are pushing higher into the RF and microwave spectrum. Many current radio receiver architectures contain analog down conversion
stages that translate an RF or microwave frequency band down to an intermediate frequency for baseband processing. This article explains
how the new generation of RF ADCs with an integrated Digital Down Conversion function, eliminates the need for analog down conversion
stages and allows the spectrum in the RF frequency domain to be directly converted down to baseband for processing.
New RF DAC Broadens Software-Defined Radio Horizon
On the transmitter side of a communications system, a new class of high-speed digital-to-analog converter, called an
RF DAC, has the ability to directly synthesize RF signals without a conventional analog up conversion analog radio chain. In conjunction
with the JESD204B high speed serial interface that enables practical management and transfer of output data, RF DACs enable conventional
radio designs to be made more efficient than with previous generations of RF class or IF-class DACs. This article explores in detail
ADI’s new RF DAC architecture, applications, and performance.
Going Full Tilt
I would like to improve the accuracy and repeatability of tilt measurements using the ADIS16209 inclinometer. Can I use several of these sensors in parallel to improve the accuracy?
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.
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.
Who killed that component?
Why do unstressed components sometimes fail for no obvious reason?
and Power Control
Control and Industrial Automation
Analog Dialogue is the technical
magazine of Analog Devices. It discusses products, applications,
technology, and techniques for analog, digital and mixed-signal