@Linear_Systems

Linear Integrated Systems (Linear Systems) is a U.S. based full service manufacturer of specialty small signal discrete semiconductors.

 Fremont, CA
linearsystems.com/
Joined July 2012
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205Media
Why do engineers still use discrete JFETs? For ultra-low noise, high input impedance, low input capacitance and excellent linearity — critical for weak-signal front ends. Read more: wix.to/ArtoW60 #AnalogDesign #JFET #Electronics #LowNoise
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JFET Design Spotlight: Rethinking the Audio Op-Amp — short read on why the first design is rarely the final one and how disciplined critique leads to better analog circuits. Read: wix.to/G0sMrPM #JFET #OpAmp #AnalogDesign #Audio

JFET Design Spotlight: Rethinking the Audio Op-Amp

There are a lot of circuits and applications of discrete and integrated component combinations solving a myriad of tasks defined as solutions to a problem. Dad used to tell me that, "The problem...

linearsystems.com
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JFET Design Spotlight: How early OCR sensors influenced 45 years of FET design. Short, technical, and full of lessons for analog engineers. Read more: wix.to/OF6pLr8 #JFET #Analog #Electronics #OCR

JFET Design Spotlight 🔍 | From Early OCR Systems to 45 Years of FET Innovation

"In 1979, we teamed up at DEST Corp. to design the first desktop OCR machine for scanning standard letter and legal pages with a linear Reticon stored-charge diode array.Internal to that sensor were...

linearsystems.com
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The LSK489 combines: • 1.8 nV/√Hz typical noise voltage • Industry-leading 4 pF typical input capacitance • Monolithic dual JFET matching and thermal tracking #JFET #AnalogDesign #LowNoise #Sensors #Instrumentation #Hydrophones #MEMS #ElectronicsDesign #PrecisionAnalog
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Low noise alone won’t save high-impedance sensor signals. Input capacitance and front-end choices can be just as critical. Quick read for engineers: wix.to/SQpBT9t #AnalogDesign #Sensors #Electronics #Engineering

Why High-Impedance Sensors Need More Than Just Low Noise

When engineers design front-end circuits for microphones, hydrophones, piezoelectric sensors, MEMS devices, and other high-impedance signal sources, noise is often the first specification they look...

linearsystems.com
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JFET Design Spotlight: Maximum Power Point Test Controller — a neat father-daughter build turned MPPT tester. Learn how three JFETs perform distinct functions for accurate solar panel characterization. Read more: wix.to/AYLn0oK #Solar #MPPT #JFET #Electronics

JFET Design Spotlight: Maximum Power Point Test Controller

“My daughter, during her graduate studies in renewable energy applications, once needed a tester for solar panels to find their maximum power point under real-world conditions. So, this is what dads...

linearsystems.com
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New blog: Photodiode Preamps — learn why low input capacitance and low input noise matter for photodiode amplifiers and how devices like the LSK489 can help. Full post: wix.to/odx5lUp #Photodiode #Electronics #LowNoise #OpAmps

Photodiode Preamps

In some JFET op amps such as the AD743, the input capacitance is in the order of 18 to 20 pF. In comparison, with an LSK489 dual FET, the input capacitance is in the order of 3 pF, which will be...

linearsystems.com
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Updated SPICE models for the LSK389 (A/B/C/D) derived from real device data — get more accurate simulations and closer-to-real-world results. Details: wix.to/xGf9owV #SPICE #LSK389 #Electronics

Better Simulation Starts with Better Device Models 🔍

Accurate simulation depends on accurate models. That’s why we’ve released new SPICE models for the LSK389, now covering all A, B, C, and D grades. These updated models are derived from real device...

linearsystems.com
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Why the analog front end matters: tiny signals need ultra-low-noise, tightly matched components like the LSK389 dual JFET to be detected reliably. Read more: wix.to/PIJLnKR #AnalogDesign #Sensors #Electronics
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Single-JFET phase splitter for audio — a compact solution for clean 0°/180° outputs, low DC offset, and balanced signals. Read the design notes: wix.to/Nnq677s #JFET #Audio #CircuitDesign #Electronics

JFET Design Spotlight: A Single JFET Phase Splitter for audio applications

“There is sound and then there is the sound of sound.”™ In designing discrete element electronic audio circuitry, there will inevitably be a need to split a signal to a 0° and 180° phase differenti...

linearsystems.com
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wix.to/ROtsapn

Linear Systems | Industry Leader in Ultra Low Noise Monolithic Dual JFET Amplifiers

Linear Systems has been designing, manufacturing, and distributing high-performance JFET Amplifiers, DMOS Switches, Current Regulating Diodes, Bipolar Transistors, and JFET Switches since 1987. Our...

linearsystems.com
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GPUs are famous — but semiconductors for signal integrity, timing, and control make AI systems actually work. Learn how these overlooked parts shape AI infrastructure: wix.to/1AuCaTh #AI #Semiconductors #Hardware #SignalIntegrity #Engineering

The Hidden Role of Semiconductors in AI Infrastructure

When people talk about AI, the focus is almost always on GPUs, CPUs, and advanced nodes.But that’s only part of the story.Behind every AI system is a broader layer of semiconductors responsible for...

linearsystems.com
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New Design Spotlight: A ±1kV soft‑start circuit that fixed startup failures in electron microscope HV amplifiers. Fast, practical reading for HV designers. Read more: wix.to/dJu7jSQ #Electronics #HV #CircuitDesign

Design Spotlight: A High Voltage Soft Start Circuit for the Masses

High-voltage startup problems can quietly kill performance and hardware. This week’s Design Spotlight dives into a ±1kV soft-start circuit that solved a real-world failure in electron microscope HV...

linearsystems.com
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The BF862 is gone — the LSBF862 isn’t just a replacement, it’s an upgrade. Short read on why engineers prefer LSBF862 for ultra-low-noise and stability-critical circuits. wix.to/f1ivNvS #electronics #LSBF862 #engineering #lownoise

Why Engineers Are Switching to the LSBF862 and Not Looking Back

When NXP Semiconductors discontinued the BF862, most engineers didn’t just lose a part, they lost a go-to solution they trusted in critical designs.What we’re seeing now is interesting.Teams aren’t...

linearsystems.com
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New post: A Discrete Design for a Guitar Compressor — notes from 8 years of testing classic compressors and building a better-response design. Read: wix.to/J417o4q #GuitarPedals #DIYPedal #AudioEngineering #Tone

A Discrete Design for a Guitar Compressor

“8 years were spent working with, and listening to, a cadre of guitarists debating various pedal sound effects. Most debated was the lowly Compressor. Orange squeezer, MXR Dynacomp, Ross, Boss, and...

linearsystems.com
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Improve photodiode amplifier bandwidth by reducing input capacitance. See how the LSK489 ultra-low noise, low-capacitance dual JFET helps designers hit higher speeds with better stability. Full article: wix.to/V0JDumI #analogdesign #jfet #photodiode #lownoise

Improving Bandwidth in Photodiode Amplifiers with the LSK489 Ultra-Low Noise, Low Capacitance Dual...

Designing high-speed photodiode and sensor front ends often comes down to one limiting factor: input capacitance.Even when noise performance is optimized, excess capacitance at the input can restrict...

linearsystems.com
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Temperature-induced error in RF RMS measurements? This constant-temperature substitution design using pico‑amp diodes and JFETs offers a clever fix. Read the article: wix.to/kMapotA #rfengineering #analogdesign #electronics #lownoise #linearsystems

A Radio Frequency RMS Metering Circuit

RF Engineers know that temperature effects matter in RF measurement. This constant temperature substitution design tackles that challenge in a clever way using pico-amp diodes. JFET Design Spotlight...

linearsystems.com
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Obsolete parts are a bigger headache for analog designs — small differences can break performance. Learn practical fixes engineers use to keep production on track: wix.to/IXderos #analogdesign #obsolescence #electronicsengineering #EE #hardwareengineering

Struggling with Obsolete Parts? How Engineers Are Solving It

Every engineer has faced it at some point: a critical component in your design is suddenly obsolete, unavailable, or impossible to source reliably. And unlike digital systems, analog designs don’t...

linearsystems.com
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New from Linear Systems: SPICE model for the PAD Series SSTPAD10 low‑leakage diode is now available for LTspice and other SPICE tools. Improve leakage and capacitance simulations and speed up development. Read more: wix.to/x0iVQZ8 #SPICE #Electronics #LTspice

Linear Systems Releases SPICE Model for the PAD Series Low-Leakage Diode

Linear Systems is pleased to announce the release of a new SPICE model for the PAD Series low-leakage diode, developed by our engineering team.This model enables designers to simulate the SSTPAD10 in...

linearsystems.com
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JFET Design Spotlight — Audio Amplifiers: Why Class A/AB1 often deliver the warm, realistic sound we want and what Class B struggles with at crossover. Quick technical read: wix.to/iHoFYH8 #Audio #Electronics #AmplifierDesign #JFET

JFET Design Spotlight - Audio Amplifiers

“Audio amplifiers are many and varied. Ones used for music should have a very low intermodulation distortion and when overdriven should produce a minimum of odd alien sounds. Class A amplifiers tend...

linearsystems.com
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