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Simulating MOSFET Current-Voltage Characteristics Using Advanced SPICE Models

Simulating MOSFET Current-Voltage Characteristics Using Advanced SPICE Models

In this article, we use a SPICE model for 90 nm CMOS to plot key electrical relationships of an NMOS transistor.


Using Advanced SPICE models to Characterize an NMOS Transistor

Using Advanced SPICE models to Characterize an NMOS Transistor

SPICE models designed for specific CMOS process nodes can enhance simulations of integrated-circuit transistors. Learn where to find these models and how to use them.


Using Clever Techniques to Convert a Passive Audio Filter Into an Active Filter

Using Clever Techniques to Convert a Passive Audio Filter Into an Active Filter

This project covers two fascinating and useful circuit design techniques—the Burton Transform and Dualling—that allow us to transform a passive network into an active network while building an audio noise filter.


Projects Jun 02, 2024 by John Woodgate
Simulating the Short-Circuit Power Dissipation of a CMOS Inverter

Simulating the Short-Circuit Power Dissipation of a CMOS Inverter

Current briefly flows through both transistors during logic-level transitions. This article explores the resulting power dissipation and provides some helpful LTspice tips for measuring current and power.


Simulating the Switching Power Dissipation of a CMOS Inverter

Simulating the Switching Power Dissipation of a CMOS Inverter

When a CMOS inverter switches logic states, power is consumed due to its charging and discharging currents. Learn how to simulate these currents in LTspice.


Freeing EEs to Design Like Tony Stark

Freeing EEs to Design Like Tony Stark

Tomide Adesanmi, co-founder and CEO of Circuit Mind, aims to release engineers from the tyranny of reading datasheets, building spreadsheets, and drawing circuit symbols so they can focus on design innovation and circuit optimization.


Switching Losses in Bipolar Junction Transistors

Switching Losses in Bipolar Junction Transistors

With the help of SPICE simulations, we examine two types of power dissipation that occur when BJTs are used as switches.


Siemens Rolls Out Multi-Discipline Simulation Tool for EV Designs

Siemens Rolls Out Multi-Discipline Simulation Tool for EV Designs

The new software solution can predict e-machine performance, including that of axial flux electric drive units.


News Feb 13, 2024 by Jake Hertz
Siemens Devises Secure Way to Share IC Thermal Models to E-Supply Chain

Siemens Devises Secure Way to Share IC Thermal Models to E-Supply Chain

IC designers can now securely share thermal models across the supply chain—without compromising critical details about chip architecture.


News Jan 25, 2024 by Jake Hertz
Using the Load-Pull Technique in RF Power Amplifier Design

Using the Load-Pull Technique in RF Power Amplifier Design

The output power and efficiency of a power amplifier (PA) are highly dependent on its load terminations. Learn how to characterize a PA's performance by analyzing load lines and estimating the load-pull contours of constant output power.


Editor’s Choice: Our Top 10 News Articles of 2023

Editor’s Choice: Our Top 10 News Articles of 2023

Looking back on the year, here’s a review of the most popular News articles on All About Circuits.


News Dec 31, 2023 by Jeff Child
Can There Be Any Doubt? In Our Industry, 2023 Was ‘The Year of AI’

Can There Be Any Doubt? In Our Industry, 2023 Was ‘The Year of AI’

While the rest of the world spent 2023 playing with ChatGPT, the electronics industry put AI into everything from processors to edge IoT chips to EDA tools.


News Dec 27, 2023 by Jeff Child
Flux Upgrades Its Copilot Tool Adding Multi-Modal AI Features

Flux Upgrades Its Copilot Tool Adding Multi-Modal AI Features

Released today, the upgrade brings improvements—including image capability—in Flux AI Chatbot giving designers a smarter virtual “engineering partner” to help with electronics PCB designs


News Dec 21, 2023 by Duane Benson
Building a Circuit to Measure the Effect of Noise on Audio Signals

Building a Circuit to Measure the Effect of Noise on Audio Signals

This project will cover the design, construction, and testing of an analog filter meeting the ITU-R BS.468-4 specification, which aims to evaluate the disturbing effects of noise on audio broadcast signals.


Projects Dec 10, 2023 by John Woodgate
RF Amplifier Stability Factors and Stabilization Techniques

RF Amplifier Stability Factors and Stabilization Techniques

Learn ways to test an RF amplifier's stability, techniques to stabilize its operation, and how RF design software can help you do both.


Adding Hysteresis to a Comparator Circuit: LTspice Lab

Adding Hysteresis to a Comparator Circuit: LTspice Lab

This article uses SPICE simulations to explain the functionality of hysteresis based on positive feedback in a comparator circuit.


Analyzing a Current-Mode-Controlled Buck Converter in LTspice

Analyzing a Current-Mode-Controlled Buck Converter in LTspice

In this article, we use voltage waveforms to explore the electrical behavior of key subcircuits within a CMC buck converter.


Implementing a Current-Mode-Controlled Buck Converter in LTspice

Implementing a Current-Mode-Controlled Buck Converter in LTspice

In this article, we use LTspice to discuss the operation of the voltage error amplifier and PWM generator in a current-mode-controlled (CMC) step-down regulator.


An A-Weighted Analog Filter that Mimics the Response of the Human Ear

An A-Weighted Analog Filter that Mimics the Response of the Human Ear

In this project, we design an A-weighted analog noise filter for audio frequencies. The filter provides a variable frequency gain response that is similar to that of our hearing.


Projects Oct 29, 2023 by John Woodgate
Designing a Current-Mode-Controlled Buck Converter in LTspice

Designing a Current-Mode-Controlled Buck Converter in LTspice

In this article, we’ll learn about current-mode control (CMC) for switching regulators by examining the layout of an example circuit in LTspice.