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How to Simulate a Phase-Locked Loop

How to Simulate a Phase-Locked Loop

This article presents an LTspice circuit that can be used to explore the behavior of a phase-locked loop.


What Exactly Is a Phase-Locked Loop, Anyways?

What Exactly Is a Phase-Locked Loop, Anyways?

This article introduces a phase-based feedback system that plays an important role in many applications.


How to Low-Pass Filter a Square Wave

How to Low-Pass Filter a Square Wave

This article, part of AAC’s Analog Circuit Collection, presents a circuit that is a good choice when you need to remove high-frequency noise from a digital signal.


LED Dimming: A High-Power 40V Buck LED Driver with Two Dimming Methods from Diodes Incorporated

LED Dimming: A High-Power 40V Buck LED Driver with Two Dimming Methods from Diodes Incorporated

Diodes Incorporated has released a high-power 40 V LED controller that's capable of driving up to 3 amps of current.


News Mar 06, 2018 by Nick Davis
Resolving the Signal: Introduction to Noise in Delta-Sigma ADCs Part 3

Resolving the Signal: Introduction to Noise in Delta-Sigma ADCs Part 3

This 12-part article series focuses on the impact of noise in delta-sigma ADCs. Part 3 brings the theoretical information provided in parts 1 and 2 to a real-world design example.


What Exactly Is a Quartz Crystal, Anyways? A Look at Quartz Crystal Oscillators

What Exactly Is a Quartz Crystal, Anyways? A Look at Quartz Crystal Oscillators

This article explains some theory behind an extremely common electronic component.


Digitally Adjust DC-to-DC Voltage Regulators: A PMBus-Controlled Current DAC

Digitally Adjust DC-to-DC Voltage Regulators: A PMBus-Controlled Current DAC

A PMBus-controlled, bidirectional current DAC (digital-to-analog converter) that can adjust the output voltage of a DC/DC converter.


News Mar 02, 2018 by Nick Davis
MicroPower, MicroSize, Near-Zero Drift, and Low Offset Voltage: A New Op-Amp from Texas Instruments

MicroPower, MicroSize, Near-Zero Drift, and Low Offset Voltage: A New Op-Amp from Texas Instruments

A new operational amplifier from Texas Instruments offers impressive specifications in a very small package.


News Mar 01, 2018 by Nick Davis
Maxim MAX30001 Biopotential Analog Front-End Solution | New Product Brief

Maxim MAX30001 Biopotential Analog Front-End Solution | New Product Brief

Maxim’s MAX30001 is a complete biopotential and bioimpedance analog front end for wearables, offering high performance and low power consumption.


Design a Custom Microcontroller Programming and Testing Board

Design a Custom Microcontroller Programming and Testing Board

In this article we’ll discuss the design for a custom microcontroller programming/debug/extension PCB and we’ll look at an example project.


Projects Feb 25, 2018 by Robert Keim
One Circuit, Three Bode Plots: The Omnifilter

One Circuit, Three Bode Plots: The Omnifilter

This article, part of AAC’s Analog Circuit Collection, discusses a filter circuit that allows you to choose between a low-pass, a high-pass, and a band-pass response.


A New High-Performance Digital MEMS Microphone from Infineon

A New High-Performance Digital MEMS Microphone from Infineon

Here's a breakdown of Infineon's new high-performance digital MEMS microphone that offers power-optimized modes for low-current consumption devices.


News Feb 21, 2018 by Nick Davis
How to Monitor Current with an Op-Amp, a BJT, and Three Resistors

How to Monitor Current with an Op-Amp, a BJT, and Three Resistors

This article, part of AAC’s Analog Circuit Collection, explains the functionality of a clever circuit that accurately measures supply current.


How to Use a Diode as a Thermometer

How to Use a Diode as a Thermometer

This article, part of AAC’s Analog Circuit Collection, presents a straightforward circuit that allows you to measure temperature with little more than a diode and a BJT.


Resolving the Signal: Introduction to Noise in Delta-Sigma ADCs Part 2

Resolving the Signal: Introduction to Noise in Delta-Sigma ADCs Part 2

In part 2 of this series, I'll continue the fundamental ADC noise discussion by covering how to measure ADC noise, noise specifications in ADC data sheets, and absolute versus relative noise parameters.


Need a Current Regulator? Use a Voltage Regulator!

Need a Current Regulator? Use a Voltage Regulator!

This article, part of AAC’s Analog Circuit Collection, shows you how linear voltage regulators can also be handy in constant-current applications.


Two for One: A Buck Regulator and an LDO in a Single Package from Analog Devices

Two for One: A Buck Regulator and an LDO in a Single Package from Analog Devices

Called a Micro PMU, this IC from Analog Devices offers a 3A buck regulator and a 3A ultralow-noise LDO in a single package.


News Feb 09, 2018 by Nick Davis
When a Diode Simply Isn’t Good Enough: The Superdiode

When a Diode Simply Isn’t Good Enough: The Superdiode

This article, part of AAC’s Analog Circuit Collection, discusses an interesting circuit in which an op-amp and an ordinary diode work together to create a superdiode.


500mA of Current with a 1% Voltage Output Accuracy: A Low Noise LDO from Maxim Integrated

500mA of Current with a 1% Voltage Output Accuracy: A Low Noise LDO from Maxim Integrated

Maxim Integrated recently announced their new series of linear regulators that maintain ±1% output accuracy over a wide operating temperature range with only 12µVrms of noise.


News Feb 07, 2018 by Nick Davis
Conveniently Control Your Load Current with a Voltage-to-Current Converter

Conveniently Control Your Load Current with a Voltage-to-Current Converter

This article, part of AAC’s Analog Circuit Collection, presents a straightforward way to precisely control the current through an LED (or through a typical resistive load).