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< Back FAST SAMPLE AND HOLD Linear Systems Jun 10, 2024 In this interesting design, a strobe pulse sets the sample mode. Here's how it works: When the strobe pulse s —Strobe pulse will turn on JFET Q1 which allows the signal to be sampled to charge capacitor C1. When the strobe pulse returns to 0 V, JFET Q1 is turned off and capacitor C1 holds the voltage value of the sampled signal plus the offset voltage of MOSFET Q 2. The JFET used could be anyone of Linear Integrated Systems switch JFETs. Ideally the lower the drain -to-source voltage the better to reduce the offset voltage of the JFET. The output signal decays at a rate of 1 mV/s. From logic input of 531 op-amp IC2 turns on JFET Q1 to complete feedback loop to IC1, Q1, and Q2. Capacitor C1 charges to voltage equal to that of input signal plus gate-to-source offset voltage of Q2. At end of strobe time, feedback loop is broken and C1 holds voltage until time of next strobe pulse. Decay in output voltage between samplings is 1 mV/s.—"Signetics Analog Data Manual," Signetics, Sunnyvale, CA, 1977, p 643-644.

SINGLE, LOW CAPACITANCE, ULTRA-HIGH INPUT IMPEDANCE, N-CHANNEL JFET AMPLIFIER < Back 2N/PN/SST4117 Series SINGLE, LOW CAPACITANCE, ULTRA-HIGH INPUT IMPEDANCE, N-CHANNEL JFET AMPLIFIER The 2N/PN/SST4117 Series Single, Low Capacitance, Ultra-High Input Impedance, N-Channel JFET Amplifier is a direct replacement for the Fairchild, NXP and Siliconix-Vishay equivalent part series. It is ideal for high input impedance applications. Available in the TO-72 4L, TO-92 3L and SOT-23 3L RoHS package, as well as die form. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: 2N4117 TO-72 4L RoHS 2N4118 TO-72 4L RoHS 2N4119 TO-72 4L RoHS PN4117 TO-92 3L RoHS PN4118 TO-92 3L RoHS PN4119 TO-92 3L RoHS SST4117 SOT-23 3L RoHS SST4118 SOT-23 3L RoHS SST4119 SOT-23 3L RoHS 2N4117 Die 2N4118 Die 2N4119 Die Datasheet Spice Model Application Notes

SINGLE, P-CHANNEL ENHANCEMENT MODE MOSFET < Back 3N163 Series SINGLE, P-CHANNEL ENHANCEMENT MODE MOSFET The 3N163 Series Single, P-Channel Enhancement Mode MOSFET is a direct replacement for Intersil and Siliconix-Vishay equivalent part. It is ideal for Amplifier and switching Applications. This part series is available in the TO-72 4L RoHS and SOT-143 4L RoHS package, as well as bare die. All Linear Systems devices are available with special testing to customer specifications. Ordering Information Below are the options you have when ordering this part series: 3N163 TO-72 4L RoHS 3N164 TO-72 4L RoHS 3N163 SOT-143 4L RoHS 3N164 SOT-143 4L RoHS 3N163 Die 3N164 Die Datasheet Spice Model Application Notes

2N5018 SERIES LOW ON-RESISTANCE, P-CHANNEL JFET SWITCH < Back 2N5018 Series 2N5018 SERIES LOW ON-RESISTANCE, P-CHANNEL JFET SWITCH The 2N5018 Series Low On-Resistance, P-channel JFET Switch is a direct replacement for the Intersil and Siliconix-Vishay part series. It is ideal for low resistance switching applications. Available in the TO-18 3L ROHS package, as well as in die form. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information: Below are the options you have when ordering this part series: 2N5018 TO-18 3L RoHS 2N5019 TO-18 3L RoHS Datasheet Spice Model Application Notes

J111 SERIES LOW LEAKAGE, N-CHANNEL JFET SWITCH < Back J/SST111 Series J111 SERIES LOW LEAKAGE, N-CHANNEL JFET SWITCH The J/SST111 Series Low Leakage, N-Channel JFET Switch is a direct replacement for the Siliconix-Vishay equivalent part. It is ideal for fast switching, low leakage, switching applications. Available in the TO-92 3L RoHS and SOT-23 3L RoHS package, as well as in die from. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information: Below are the options you have when ordering this part series: J111 TO-92 3L RoHS J112 TO-92 3L RoHS J113 TO-92 3L RoHS SST111 SOT-23 3L RoHS SST112 SOT-23 3L RoHS SST113 SOT-23 3L RoHS J111 Die J112 Die J113 Die Datasheet Spice Model Application Notes

SINGLE, LOW-LEAKAGE PICO AMP DIODES DFN PACKAGE < Back PAD Series DFN Package PAD-DFN SERIES MINIATURE/NON MAGNETIC 8-PIN DFN PACKAGE LOW LEAKAGE DIODE The PAD Series Ultra-Low Leakage, Protection Diode is a direct replacement for the Siliconix-Vishay part series. It is ideal for Pico Amp, Ultra-Low Leakage, Protection Diode Applications. This part series is available in the mineature DFN 8L RoHS package, as well as the TO-72 3L RoHS, TO-92 2L RoHS and SOT-23 3L RoHS and bare die. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: PAD1 DFN 8L RoHS PAD2 DFN 8L RoHS PAD5 DFN 8L RoHS PAD10 DFN 8L RoHS PAD20 DFN 8L RoHS PAD50 DFN 8L RoHS PAD100 DFN 8L RoHS PAD1 TO-72 3L RoHS PAD2 TO-72 3L RoHS PAD5 TO-72 3L RoHS PAD10 TO-72 3L RoHS PAD20 TO-72 3L RoHS PAD50 TO-72 3L RoHS PAD100 TO-72 3L RoHS JPAD1 TO-92 2L RoHS JPAD2 TO-92 2L RoHS JPAD5 TO-92 2L RoHS JPAD10 TO-92 2L RoHS JPAD20 TO-92 2L RoHS JPAD50 TO-92 2L RoHS JPAD100 TO-92 2L RoHS PAD1 SOT-23 3L RoHS PAD2 SOT-23 3L RoHS PAD5 SOT-23 3L RoHS PAD10 SOT-23 3L RoHS PAD20 SOT-23 3L RoHS PAD50 SOT-23 3L RoHS PAD100 SOT-23 3L RoHS PAD1 Die PAD2 Die PAD5 Die PAD10 Die PAD20 Die PAD50 Die PAD100 Die Datasheet Spice Model Application Notes

< Back Burning Amp Festival Linear Systems Mar 17, 2023 Burning Amp Festival - A DIY Audio Gathering Burning Amp Festival Every year Linear Systems sponsors one of the audio industry’s best-regarded DIY amplifier design, display and discussion events, Burning Amp Festival. Here audio enthusiasts enjoy sharing their displays and demonstrations of incredible audio projects, and talk-shop with renowned industry leaders. Speakers such as audio legend Nelson Pass, take the stage to discuss recent projects and engage with the crowd in a Q&A session. It’s no wonder Burning Amp continually attracts audio DIYers from around the world! Burning Amp typically takes place in late October/early November. In past years the event has been held at various locations throughout the Bay Area, such as Fort Mason in San Francisco, CA. Due to COVID-19, this year’s event is cancelled, but we look forward with great anticipation to the Burning Amp Festival 2021.Interested in presentations from past years speakers? Visit our YouTube Channel: www.youtube.com/user/LinearSystemsUSA

< Back CMR Ratio in Dual JFETs Introduction When choosing the optimal JFET for a new circuit, a characteristic often overlooked is how the part’s design affects the rejection of unwanted inputs while amplifying the signal as accurately as possible. Single JFETs provide excellent impedance matching and low-noise amplification, but lack one important quality of their dual counterparts – dual discrete devices largely reject common signals. This important characteristic – Common Mode Rejection – means that selecting the right dual JFET can be the most cost-effective way of improving signal-to-noise ratio in a design. Read More

MONOLITHIC DUAL, PNP TRANSISTOR < Back IT130 Series MONOLITHIC DUAL, PNP TRANSISTOR Previous Next

< Back Ansberry Named VP Linear Systems Mar 17, 2023 Michael Ansberry - VP for Process Engineering. Ansberry Named VP NEWS RELEASE FOR INFORMATION CONTACT: Laura Madonna, Marketing Analyst Linear Integrated Systems, Inc. Phone: (510) 490-9160 Email: laura@linearsystems.com ANSBERRY NAMED VP FOR PROCESS ENGINEERING AT LINEAR INTEGRATED SYSTEMS FREMONT, CA – 06/27/2018. Linear Integrated Systems, Inc., is proud to announce and welcome Michael Ansberry as the company’s Vice President for Process Engineering. Ansberry will be responsible for all aspects of the company’s semiconductor fabrication operations. Ansberry joins Linear Integrated Systems (Linear Systems) from Lumileds, where he was Director of Operations. Lumileds is a lighting company that designs and manufactures LEDs for automotive, general and specialty lighting applications. Prior to Lumileds, he worked in process engineering at Sipex, Micro Power Systems and other Silicon Valley semiconductor companies. While Ansberry’s most recent experience is in managing large-scale LED production, he has extensive process engineering experience with the types of world-class semiconductors produced by Linear Systems. “Linear Systems makes the best parts in their class, and I’m very glad to be joining the team here,” Ansberry said. “Ultra-low-noise discrete components are critical for a wide range of applications and joining Linear Systems during this period of growth is exciting.” Linear Systems CEO Cindy L. Johnson said Ansberry's hiring is a key part of the company’s program to expand to meet a growing demand for its products. “Efforts to produce more precise and capable sensors are leading designers to incorporate our ultra-low-noise JFETs and other parts into their devices,” Linear Integrated Systems, Inc., is a full-service, privately-held, 30-year-old designer and manufacturer of small-signal discrete semiconductors. The Fremont, CA company was founded by John H. Hall, co-founder of Intersil and founder of Micro Power Systems. Linear Systems’ product line consists of: Ultra-Low-Noise N-Channel and P-Channel Dual and Single JFETs, High-Speed Lateral DMOS Switches, Bipolar Transistors, BIFET Amplifiers, Current-Regulating Diodes, Low-Leakage Diodes, MOSFETs, PhotoFETS, and Voltage Controlled Resistors. Data sheets can be downloaded at linearsystems.com .

< Back Linear Integrated Systems Expands Custom Testing Services to Provide Designers Greater Optimization and Flexibility Linear Systems Dec 25, 2024 Linear Integrated Systems (Linear Systems) is pleased to announce the immediate availability of Expanded Custom Testing Services for all its Small Signal Discrete Products. These services allow designers to tailor product specifications to meet specific design requirements, empowering them to optimize performance and enhance flexibility. Available Custom Testing Services Include: Linear Systems' Expanded Custom Testing Services give designers more options to push beyond standard datasheets. With over 37 years of wafer processing expertise, Linear Systems offers the ability to target specific DC datasheet parameters. Ultra Low Noise N-Channel and P-Channel Monolithic Dual and Single JFETs Low Noise NPN & PNP Monolithic Dual Transistors High-Speed Analog Quad and Single DMOS Switches Ultra Low Leakage Monolithic Dual and Single Diodes Single Current Regulating Diodes N-Channel and P-Channel MOSFETs (Monolithic Dual and Single) At a Glance: With over 37 years of wafer processing expertise, Linear Systems offers the ability to target specific DC datasheet parameters, providing designers with tailored ranges for optimal performance. Popular specifications include: Threshold Voltage Breakdown Voltage Leakage Beta/HFE GM Idss Rds (on) Linear Systems' products are available in die form, surface-mount, and through-hole packages, ensuring versatility for various design needs. Why It Matters: Linear Systems' Expanded Custom Testing Services give designers more options to push beyond the limitations of standard datasheets. This eliminates the labor-intensive process of hand-screening parts and reduces costs by avoiding purchases of devices that don't meet specific requirements. Additionally, customers with source control drawings facing part discontinuance can use these services as a cost-effective alternative to redesigns or program discontinuance. Applications: These enhanced services are ideal for amplifier and switching applications in industries such as: Test and Measurement Hybrid Electronics Professional Audio Medical Electronics Piezoelectric Sensors Defense and Aerospace Space/Satellite Systems About Linear Integrated Systems: Founded in 1987 by John M. Hall, Cindy L. Johnson, and John H. Hall, Linear Integrated Systems, Inc. is a privately held designer and manufacturer of small-signal discrete semiconductors based in Fremont, CA. With a legacy of innovation, John H. Hall, a co-founder of Intersil and the founder of Micro Power Systems, brought significant expertise to the company, solidifying Linear Systems as a trusted partner for high-performance semiconductor solutions. For more information about Linear Systems and its Expanded Custom Testing Services, call (510) 490-9160, email sales@linearsystems.com or visit www.linearsystems.com . Linear Systems offers a diverse product line, including Dual JFET Amplifiers , Single JFET Amplifiers , JFET Switches , DMOS High Speed Switches , Low Leakage Diodes , Current Regulating Diodes , Bipolar Transistors , MOSFETs , Voltage Controlled Resistors and BIFET Amplifiers . Visit www.linearsystems.com to download our 2024 Data Book , Cross Reference Guide , datasheets, SPICE models, application notes , and more. Stay connected and join our growing LinkedIn community for updates and insights. You can also follow us on YouTube , Facebook , Instagram and X . Contact: Sales@linearsystems.com Phone: (510) 490-9160Website: www.linearsystems.com

LOG CONFORMANCE, MONOLITHIC DUAL, NPN TRANSISTOR < Back LS318 LOG CONFORMANCE, MONOLITHIC DUAL, NPN TRANSISTOR The LS318 Log Conformance, Monolithic Dual, NPN Transistor is a direct replacement for the Micro Power Systems MP318 Series. It is ideal for Log Conformance, Transistors Amplifier & Switching Applications. It is available the in TO-71 6L RoHS, TO-78 6L RoHS, PDIP 8L ROHS and SOIC 8L RoHS package, as well as bare die. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: LS318 TO-71 6L RoHS LS318 TO-78 6L RoHS LS318 PDIP 8L RoHS LS318 SOIC 8L RoHS LS318 Die Datasheet Spice Model Application Notes