Latest Filters Technical Articles

How do you design a filter that (ideally) has the same gain for all frequencies? And, furthermore, why would you want to do this?

How do you design a filter that (ideally) has the same gain for all frequencies? And, furthermore, why would you want to do this?

An introduction to the Analog Discovery 2 by Digilent.

An introduction to the Analog Discovery 2 by Digilent.

Linear phase response, also known as constant group delay, is an important property in some filter applications.

Linear phase response, also known as constant group delay, is an important property in some filter applications.

This technical brief explains the importance of complex-conjugate poles and second-order stages in optimizing filter performance.

This technical brief explains the importance of complex-conjugate poles and second-order stages in optimizing filter performance.

This technical brief presents a simple MOSFET configuration that can be used as a voltage-controlled switch.

This technical brief presents a simple MOSFET configuration that can be used as a voltage-controlled switch.

This technical brief describes channel-length modulation and how it affects MOSFET current–voltage characteristics.

This technical brief describes channel-length modulation and how it affects MOSFET current–voltage characteristics.

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma…

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma ADC belongs to the oversampled family of converters. It relies upon oversampling and noise shaping to achieve high-resolution conversions.

In this article, we’ll look at the equation for differential gain and use LTspice to find the value of the…

In this article, we’ll look at the equation for differential gain and use LTspice to find the value of the channel-length-modulation parameter referred to as lambda (λ).

In this article, we’ll discuss MOSFET small-signal output resistance as we make our way toward predicting the gain of…

In this article, we’ll discuss MOSFET small-signal output resistance as we make our way toward predicting the gain of the actively loaded differential pair.

This article explains how Arduino works from an electronic design perspective. It also explains the role of every part of…

This article explains how Arduino works from an electronic design perspective. It also explains the role of every part of the Arduino.

Learn about a straightforward version of a circuit that is essential in the design of analog integrated circuits.

Learn about a straightforward version of a circuit that is essential in the design of analog integrated circuits.

This article presents some basic cap-sense circuit configurations and discusses how to deal with low- and high-frequency noise.

This article presents some basic cap-sense circuit configurations and discusses how to deal with low- and high-frequency noise.

In this article, we’ll compare active and passive filters and look at some common second-order active topologies.

In this article, we’ll compare active and passive filters and look at some common second-order active topologies.

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of…

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of FIR filters over IIR designs, e.g. stability and linear-phase response. Finally, we'll go over an introduction to designing FIR filters via the window method.

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert…

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert this data into an analog signal without overburdening the CPU.

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical…

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical characteristics, and the application programming interface.

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the…

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the DAC’s sampling rate.

In this article we’ll use the SAM4S Xplained Pro development platform to get some hands-on experience with a PWM DAC.

In this article we’ll use the SAM4S Xplained Pro development platform to get some hands-on experience with a PWM DAC.

In this article we will take a closer look at how to effectively low-pass filter a PWM signal into an analog voltage.

In this article we will take a closer look at how to effectively low-pass filter a PWM signal into an analog voltage.