Latest Analog Technical Articles

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Magnetic Field Strength Meter and Calibrator

This project will explain how to develop a system to measure magnetic field emissions at frequencies up to 150 kHz from high-current power cables without cutting or disturbing the cable.

October 28, 2022 by John Woodgate

Ratiometric Resistance Measurement Basics Using an Analog to Digital Converter

Learn the basics of ratiometric resistance measurements in analog to digital (A/D) converters, how it's measured, and example uses in a digital multimeter (DMM), microprocessor, and various resistive sensors.

October 07, 2022 by Harry Trietley

Exploring Monolithic Thermocouple Signal Conditioning Using AD849x and LT1025

Learn about thermocouple signal conditioning and thermocouple nonlinearity through two different monolithic thermocouple amplifier solutions: the AD849x family and the LT1025.

October 06, 2022 by Dr. Steve Arar

Thermocouple Cold Junction Compensation Using Analog Temperature Sensors

Learn how analog circuits can be used to implement cold junction compensation using examples from Analog Devices and Texas Instrument's TMP35 and LM335 temperature sensors, respectively.

September 09, 2022 by Dr. Steve Arar

Electronic Component Aging—the Aging Effects of Resistors and Op-amps

Learn about the aging behavior of resistors and amplifiers using temperature calculations and the Arrhenius equation to understand resistor drift, resistor stability, and op-amp drift.

August 28, 2022 by Dr. Steve Arar

Analyzing 2nd-Order Circuits in Laplace Space Using Python

Learn about simplifying the mathematics of circuit analysis using the Laplace transform, Python, and SymPy using a series RLC circuit as an example.

August 07, 2022 by Darby Hewitt

Offset Error and Gain Error in a Bipolar ADC and Differential ADC

Concerning analog-to-digital converters (ADCs), learn about offset errors and gain errors in a bipolar ADC and differential ADC as well as offset error single-point calibration.

July 24, 2022 by Dr. Steve Arar

ADC Offset and ADC Gain Error Specifications

Learn about the offset and gain error specifications for ADCs, like the ADC transfer function and work through an example of an ADC offset error and ADC gain error.

July 17, 2022 by Dr. Steve Arar

Temperature Drift in Resistors and Op-amps—Flicker Noise and Signal Averaging

Learn about temperature drift in electronic circuits, namely in resistors and amplifiers. We'll also cover how the effect of flicker noise comes into play and how drift limits the effectiveness of signal averaging.

July 15, 2022 by Dr. Steve Arar

Piezoelectric Accelerometers With Integrated Electronics Piezoelectric (IEPE)

Learn about piezoelectric accelerometers with integrated electronics piezoelectrics (IEPEs), namely an IEPE's voltage mode, charge mode, and dynamic range.

May 29, 2022 by Dr. Steve Arar

Understanding Charge Amplifier Errors—Time Constant and Drift

Learn about charge amplifier limitations at low frequencies, the effects of time constants, and how the drift phenomenon can also introduce errors in low-frequency measurements.

May 15, 2022 by Dr. Steve Arar

Processing a Piezoelectric Accelerometer Output Using a Charge Amplifier

Learn about charge amplifiers which are used for charge output conversion of a piezoelectric sensor into a usable voltage signal.

May 08, 2022 by Dr. Steve Arar

What is it About Audio Distortion? Understanding Nonlinearity

Learn about how system nonlinearity creates distortion in audio signals that impacts the sounds we hear. We will examine sine waves, harmonics, and intermodulation distortion.

April 10, 2022 by John Woodgate

MEMS Accelerometer Frequency Response and Bandwidth Specification

Learn about frequency response and bandwidth specification of MEMS accelerometers.

December 29, 2021 by Dr. Steve Arar

Understanding the Amplifier Offset Voltage and Output Swing in Resistive Current Sensing

How does an amplifier's input offset voltage impact the accuracy of a current sense resistor's measurement? And how does amplifier output swing affect your shunt resistor value? Learn this and more in this technical article.

August 22, 2021 by Dr. Steve Arar

Learn How Integrated Solutions Can Increase the Accuracy of Resistive Current Sensing

In this article, we’ll discuss why a discrete implementation cannot provide a high accuracy in resistive current sensing.

August 15, 2021 by Dr. Steve Arar

Resistive Current Sensing: Low-Side vs. High-Side Sensing

What's the difference between high-side and low-side resistive current sensing? This article explains the basics, as well as when each is the more appropriate design choice.

August 01, 2021 by Dr. Steve Arar

An Introduction to Digital Signal Processing

This article provides a general understanding of what DSP is, how it works, and what advantages it can offer. To appreciate the advantages of DSP, let’s first have a look at the conventional method of signal processing, i.e., analog signal processing.

June 30, 2021 by Dr. Steve Arar

How to Measure the Drive Level of a Quartz Crystal

Learn why the drive level of your quartz crystal oscillator is important and several methods for how to measure it.

June 21, 2021 by Dr. Steve Arar

Examining the Negative Resistance of a Quartz Crystal Oscillator

This article discusses how we can examine the oscillator circuit to make sure that it has sufficient “negative resistance” or “oscillation allowance”.

June 18, 2021 by Dr. Steve Arar