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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

< Back Solving the Noise Puzzle Introduction Noise is one of the more important aspects of circuit design. Lower noise in audio amplifier design means better quality audio. Low-noise in instrument design means more reliable and accurate measurements at lower voltage and current levels. And low-noise in current source designs means less noise injected into the electronic system. One of the most basic approaches to reduce noise in an amplifier is to use low-noise components. This would include low-noise bipolar transistors and low-valued resistors. Although one can use low-noise operational amplifiers in the design of low-noise circuits or low-noise current sources it is often not done. This is because lower noise can be often be obtained with a well-thought out discrete design. And that’s because discrete transistors offer much more design customization capability for specific circuit applications – like optimized collector biasing. One must remember that monolithic chip designs are built for the most part for general purpose applications. It is hard to tailor a specific op amp or current source chip for a specific source resistance, specific power consumption requirement and a specific bandwidth that will lower the overall noise – that is unless you add-on more compensation components. Read More

< Back JFETs for VC Circuits Introduction Linear Integrated Systems manufactures a variety of FETs (Field Effect Transistors). In particular they have a variety of matched dual products. There are advantages in having matched devices. For example, if you are building a twochannel stereo audio product, having two or four devices in the same package allows for the two audio channels to be more closely matched. This paper will explore using FETs in voltage controlled circuits. Several approaches will be shown: 1. Using FETs as voltage controlled resistors. 2. Using FETs as voltage controlled amplifiers and active mixers. 3. Using FETs as voltage controlled phase shifters for processing music. 4. Using FETs as voltage controlled band pass filters. We will also explore ways to reduce nonlinearities or distortions and automatically bias the FETs. Read More

ULTRA LOW NOISE, HIGH IDSS SINGLE N-CHANNEL JFET AMPLIFIER < Back LSK170X ULTRA LOW NOISE, HIGH IDSS SINGLE N-CHANNEL JFET AMPLIFIER The LSK170X Ultra Low-Noise, High Idss, Single N-Channel JFET Amplifier is ideal for Ultra-Low Noise Audio/Acoustic Applications. Available in the TO-92 3L RoHS, SOT-23 3L RoHS and SOT-89 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: LSK170X TO-92 3L RoHS LSK170X SOT-23 3L RoHS LSK170X SOT-89 3L RoHS LSK170X Die Datasheet Spice Model Application Notes

< Back LSK389 App Note Introduction The LSK389 is the industry’s lowest noise Dual N-Channel JFET, 100% tested, guaranteed to meet 1/f and broadband noise specifications, while eliminating burst (RTN or popcorn) noise entirely. The product displays high transconductance and very good matching. It is the JFET of choice for low noise applications, especially those requiring a differential amplifier input stage. Read More

CURRENT REGULATING DIODE < Back J500 Series CURRENT REGULATING DIODE The J500 Series Current Regulating Diode is a direct replacement for the Siliconix-Vishay J500 Series. It is ideal for current-limiting and constant-current applications. It is available in the TO-92 2L 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: J500 SOT23 3L RoHS J501 SOT23 3L RoHS J502 SOT23 3L RoHS J503 SOT23 3L RoHS J504 SOT23 3L RoHS J505 SOT23 3L RoHS J506 SOT23 3L RoHS J507 SOT23 3L RoHS J508 SOT23 3L RoHS J509 SOT23 3L RoHS J510 SOT23 3L RoHS J511 SOT23 3L RoHS J500 Die J501 Die J502 Die J503 Die J504 Die J505 Die J506 Die J507 Die J508 Die J509 Die J510 Die J511 Die Datasheet Spice Model Application Notes

Linear Systems designs and manufactures the highest-performance line of monolithic dual JFETs in the industry. Contact us for a quote! Back LS5911 Series WIDEBAND, HIGH GAIN, MONOLITHIC DUAL, N-CHANNEL JFET The LS5911 Series is a Wideband, High Gain, Monolithic Dual, N-Channel JFET. These parts are pin-for-pin replacements for Fairchild, Motorola, National, and Siliconix-Vishay 2N5911 Series. All dual devices are available in TO-71 6L, TO-78 7L, PDIP 8L, SOIC 8L and SOT-23 6L packages, 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: LS5911 TO-71 6L RoHS LS5912 TO-71 6L RoHS LS5912C TO-71 6L RoHS 2N5911 TO-71 6L RoHS 2N5912 TO-71 6L RoHS 2N5912C TO-71 6L RoHS LS5911 TO-78 7L RoHS LS5912 TO-78 7L RoHS LS5912C TO-78 7L RoHS 2N5911 TO-78 7L RoHS 2N5912 TO-78 7L RoHS 2N5912C TO-78 7L RoHS LS5911 PDIP 8L RoHS LS5912 PDIP 8L RoHS LS5912C PDIP 8L RoHS LS5911 SOIC 8L RoHS LS5912 SOIC 8L RoHS LS5912C SOIC 8L RoHS LS5911 SOT-23 6L RoHS LS5912 SOT-23 6L RoHS LS5912C SOT-23 6L RoHS LS5911 Die LS5912 Die LS5912C Die Datasheet Spice Model Application Notes

Linear Systems designs and manufactures the highest-performance line of monolithic dual JFETs in the industry. Contact us for a quote! Back LSJ689 LOW NOISE, LOW CAPACITANCE MONOLITHIC DUAL P-CHANNEL JFET The LSJ689 High Performance, P-Channel, Monolithic Dual JFET features extremely low noise, tight offset voltage and low drift over temperature. It is targeted for use in a wide range of precision instrumentation applications. The SOT-23 6L, TO-71 6L, SOIC 8L and DFN 8L packages provide ease of manufacturing and the symmetrical pinouts prevent improper orientation. The LSJ689 is also available in die form. SOT-23 6L, SOIC 8L and DFN 8L packages are available in tape & reel, compatible with automatic assembly methods. 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: LSJ689 TO-71 6L RoHS LSJ689 SOIC 8L RoHS LSJ689 SOT-23 6L RoHS 689 DFN 8L RoHS LSJ689 Die Datasheet Spice Model Application Notes

< Back J201 App Note Introduction Linear Systems products enable customers to build the lowest-noise signal chains possible. The J201 N-channel JFET is optimized for high gain. The part is particularly suitable for use in low power or high impedance amplifiers. Read More

Linear Systems designs and manufactures the highest-performance line of monolithic dual JFETs in the industry. Contact us for a quote! Back 2N5564 Series LOW NOISE, MONOLITHIC DUAL, N-CHANNEL JFET The 2N5564 Series is a Low Noise, Monolithic Dual, N-Channel JFET. These matched pairs of JFETs are mounted in a TO-71 package. The two-chip design reduces parasitics for good performance at high frequency while ensuring extremely tight matching. This series features high breakdown voltage, high gain, and <5 mV offset between the two die. It is a Pin-for-Pin Replacement for Siliconix-Vishay 2N5564 Series, available in the TO-71 6L 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: 2N5564 TO-71 6L RoHS 2N5565 TO-71 6L RoHS 2N5566 TO-71 6L RoHS 2N5564 Die 2N5565 Die 2N5566 Die Datasheet Spice Model Application Notes

< Back Interfacing Sensors & Transducers Introduction Abstract: A discussion of methods of amplifying and signal-conditioning for sensors with low level outputs in the presence of high ambient electrical noise sources. Advantages and disadvantages of some common amplifier circuits are considered. Read More

SINGLE, LOW CAPACITANCE, ULTRA-HIGH INPUT IMPEDANCE N-CHANNEL JFET AMPLIFIER - DFN < Back 4117DFN SERIES SINGLE, LOW CAPACITANCE, ULTRA-HIGH INPUT IMPEDANCE N-CHANNEL JFET AMPLIFIER - DFN 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. This series is available in the DFN 8L RoHS miniature/non/magnetic package, as well as the TO-72 4L RoHS, TO-92 3L RoHS, SOT-23 3L RoHS package 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: 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