Articles - Analogue Design - 6

By Todd Toporski, Texas Instruments Analog Applications Journal Part 1 Enhancing immunity to RFI and other high-frequency EMI As shown in previous sections, active filtering and CMRR can reliably reduce circuit noise in the device’s ...

By Todd Toporski, Texas Instruments Analog Applications Journal Introduction Automotive, industrial, medical, and many other applications use sensitive analog circuits that must perform their function while remaining immune to noise disturbances in ...

Xiyao Zhang, Texas Instruments Early in my graduate school education, I was working on a project that needed a unity-gain operational-amplifier (op-amp) buffer for a monitoring circuit in our thin film deposition system. As soon as the new module ...

Brandt Braswell EE Times I know there have been many advances in software development for use in design projects. The digital design landscape has permanently been altered by the use of sophisticated software tools for use in design. Design tasks ...

A simple op amp clipping circuit can limit input-voltage excursions into an ADC, thus preventing input overload and possible damage to the converter. It can be a challenge to match the voltage range of an analog signal to the input range of an ...

Analog Dialogue Instrumentation amplifiers (in-amps) can condition the electrical signals generated by sensors, allowing them to be digitized, stored, or used to control processes. The signal is typically small, so the amplifier may need to be ...

Darwin Tolentino and Sandro Herrera, Analog Devices Analog Dialogue Differential signaling finds useful application in circuits where a large signal-to-noise ratio, high immunity to noise, and lower second harmonic distortion are desired, such as ...

Analog Dialogue Question: Why is the effect of common-mode signals at the output larger than the CMRR specification? Answer: The concept of common-mode rejection ratio (CMRR) is fundamental when working with differential input circuits, yet it is ...

Chris Francis Design World There are many reasons for needing to filter power supply or signal lines. Power supply lines from a switching regulator may be too noisy for sensitive analog circuitry. Signal or power supply lines may pick up ...

Analog Dialogue Introduction Building a voltage measurement system with nanovolt sensitivity presents many design challenges. The best available op amps, such as the ultralow noise AD797 , can achieve less than 1 nV/√Hz noise at 1 kHz, but ...