By Bill Llewellyn , January 31, 2012
Emitted EMI is a drawback to the switching topology of the Class D amplifier. Passive filtering can moderate EMI but adds cost and complexity to the end product. What other internal circuit design methods can be employed to mitigate EMI?
By Steve Sockolov, December 10, 2011
Amplifiers really are the hidden heroes of most electronic systems, and the highly versatile op amp not only fills an extremely important role within the electronics industry, but its evolution is spawning new ways of signal conditioning that can be applied more broadly across many classes of amplifiers that in turn are used in many different applications.
By Staff, December 07, 2011
NXP's two new amps enable an uninterrupted audio experience during sudden supply voltage drops down to 6V in hybrid electric vehicles.
By Bob Pease, November 28, 2011
Back in 1960, Bob Pease observed a top secret project, the first solid-state operational amplifier, at George A. Philbrick Researches.
By David Dowe, October 25, 2011
This IFD describes a single op-amp voltage indicator that lights LEDs to indicate the input voltage’s relationship to two thresholds. Green indicates input above the top threshold, red the input below the bottom threshold, and yellow an input between thresholds.
By Bob Pease, October 21, 2011
Bob responds to reader missives about a custom headphone amplifier, a brilliant but impractical rack involving multiple nested phase-locked loops, and why he never took the PE exam.
By Dave Van Ess, October 17, 2011
Dave Van Ess uses a trick question to lead into a discussion of common-mode rejection ratio.
By Michael Steffes, August 27, 2010
Intersil's Michael Steffes challenges conventional approaches to Sallen Key Filter design. He says today's components and VFAs offer greater flexibility. This opinion piece links to more detailed explanations.
By Bob Pease, July 20, 2010
Bob Pease explains the practical realities of device characterization relative to process technology stability.
By Brad Albing, July 19, 2010
A 1-op-amp circuit for processing the signal from a piezoelectric accelerometer.
By Tamara Schmitz, July 16, 2010
To integrate or de-integrate? That is the question that Tamara Schmitz addresses for mixed signal solutions.
By Erik Matlin, May 05, 2010
Description of a circuit for shifting a ground-referenced signal using only 1 op-amp.
Presented By Intersil
Presented By Datatronics
Presented By Micropower