from the Lab
and Video Products
Feature Articles: Products, Applications, Technology, Design Ideas, Tutorials, and Measurement Techniques
A Note from the Editor
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?
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 voltagesóthis is called an overvoltage condition. Overvoltage can result in certain aspects of the op ampís 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 systemís 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 sensorís integration process.
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?
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