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The MOS 6581 SID: Giving the Commodore 64 Its Voice

The MOS 6581 SID: Giving the Commodore 64 Its Voice

Bob Yannes built a three-voice analog synthesizer onto one die in 1982, and its imperfect filter became the signature sound of an era.


News Jul 31, 2026 by Luke James
Infineon Serves up Security IC Supporting USB and NFC Connectivity

Infineon Serves up Security IC Supporting USB and NFC Connectivity

The new SECORA ID Key S USB security solution supports FIDO2 and PKI through hardware and near field interfaces.


News Jul 20, 2026 by Duane Benson
The NE565: The Chip That Made the Phase-Locked Loop Practical

The NE565: The Chip That Made the Phase-Locked Loop Practical

Signetics packed a VCO and phase detector into one 14-pin part, turning a daunting feedback technique into something an ordinary engineer could build.


News Jul 17, 2026 by Luke James
New Demands on RF Interconnects—How 5G and AI are Redefining RF Designs

New Demands on RF Interconnects—How 5G and AI are Redefining RF Designs

5G, AI, and quantum computing are pushing RF interconnects to their limits. Learn how engineers are evolving connector designs to ensure signal integrity in compact, high-speed systems.


Cirrus Logic Expands Pro Audio Converter Lineup With New 32-Bit Devices

Cirrus Logic Expands Pro Audio Converter Lineup With New 32-Bit Devices

Cirrus Logic introduced nine new 32-bit ADCs, DACs, and codecs for pro and prosumer audio systems with 115 dB dynamic range.


News Jun 23, 2026 by Joshua Tidwell
The BC109: Europe’s Low-Noise Transistor and the Silicon Behind the Fuzz Face

The BC109: Europe’s Low-Noise Transistor and the Silicon Behind the Fuzz Face

Created by Philips and Mullard in 1963, the BC109 was the low-noise member of a transistor family that dominated European electronics for two decades and later became a sought-after component in guitar effects.


News Jun 19, 2026 by Luke James
Three Audio Collaborations Tuning Up the Listening Experience

Three Audio Collaborations Tuning Up the Listening Experience

New audio releases use spatial audio, MEMS, and hybrid designs to improve immersion and sound quality.


News May 26, 2026 by Joshua Tidwell
The LM386: How National Semiconductor Put a Speaker Amplifier in Eight Pins

The LM386: How National Semiconductor Put a Speaker Amplifier in Eight Pins

Developed in the mid-1970s, National Semi’s LM386 collapsed a complete audio output stage into a single DIP-8 package running off a 9-V battery—and it became the first amplifier most hobbyists ever built.


News May 08, 2026 by Luke James
Analog Devices Unveils 2.0 Version of Its In-Cabin Automotive Audio Bus

Analog Devices Unveils 2.0 Version of Its In-Cabin Automotive Audio Bus

The new ADAA245x series increases bandwidth by 400 percent and introduces Ethernet tunneling for software-defined vehicles.


News May 01, 2026 by Jake Hertz
The Legacy of Switzerland’s First Female Engineering Professor

The Legacy of Switzerland’s First Female Engineering Professor

To celebrate Women's History Month, we spotlight Erna Hamburger, an engineer who graduated top of her class at EPFL in 1933 and spent decades breaking institutional barriers in electrical engineering and measurement science.


News Mar 19, 2026 by Luke James
Triad Semiconductor Reimagines Audio Signal Capture With ‘Universal AFE’

Triad Semiconductor Reimagines Audio Signal Capture With ‘Universal AFE’

The audio capture chip leverages Triad's current conveyor architecture to deliver a 156-dB input capture range from dual inputs.


News Jan 26, 2026 by Duane Benson
Cadence Unwraps DSP IP Purpose-Built for Next-Gen Voice AI and Audio

Cadence Unwraps DSP IP Purpose-Built for Next-Gen Voice AI and Audio

Announced today, Cadence's new Tensilica HiFi iQ DSP doubles compute, octuples AI performance, and cuts power by 25% over its predecessor, targeting next-gen AI-voice and immersive automotive audio.


News Jan 21, 2026 by Duane Benson
Knowledge and Nostalgia: 2025’s Top Educational Articles

Knowledge and Nostalgia: 2025’s Top Educational Articles

Ring in the new year with this roundup of All About Circuits' most popular educational content, both technical and historical.


News Dec 31, 2025 by Abby Garfinkle
Sensibel Eval Kits Support First Studio-Quality Optical MEMS Microphone

Sensibel Eval Kits Support First Studio-Quality Optical MEMS Microphone

Announced today, the Aurora and Polaris development kits enable designs for the company’s studio-grade optical MEMS microphone.


News Dec 10, 2025 by Jake Hertz
Analog Devices Rolls Out Rail-to-Rail Amplifier With Low Supply Current

Analog Devices Rolls Out Rail-to-Rail Amplifier With Low Supply Current

ADI built the new dual amplifier to improve low-power, single-supply designs.


News Nov 28, 2025 by Jake Hertz
Polyn Implements Its NASP Tech Into Voice Activity Detection Chip

Polyn Implements Its NASP Tech Into Voice Activity Detection Chip

The company’s first silicon-proven NASP device delivers microwatt-level, real-time voice processing at the sensor edge.


News Nov 10, 2025 by Jake Hertz
µA741: The Op Amp That Made Analog Simple

µA741: The Op Amp That Made Analog Simple

Released in 1968 by Fairchild, the µA741 brought internal frequency compensation and short-circuit protection to the op-amp world.


News Oct 24, 2025 by Luke James
Infineon Debuts Pair of Rugged MEMS Microphones for Harsh Environments

Infineon Debuts Pair of Rugged MEMS Microphones for Harsh Environments

Infineon designed the two new digital PDM microphones for high-quality audio capture in demanding and space-constrained environments.


News Sep 23, 2025 by Luke James
MEMS and Modular Platforms Drive Breakthroughs in Audio Designs

MEMS and Modular Platforms Drive Breakthroughs in Audio Designs

From AI glasses to earbuds to long-range Bluetooth audio, three new product wins highlight how MEMS and RF front-end technologies are reshaping wireless sound.


News Sep 10, 2025 by Luke James
TDK Unwraps Smart Home Sensors Marrying High Precision and Low Power

TDK Unwraps Smart Home Sensors Marrying High Precision and Low Power

MEMS microphones, ToF sensors, and motion-tracking IMUs from TDK deliver responsive, energy-efficient performance across smart home appliances, remotes, speakers, locks, and more.


News Jun 30, 2025 by Joshua Tidwell