Micross Components, Inc., a leading global provider of mission-critical microelectronic components and services for high-reliability aerospace, defense, space, medical, and industrial applications, is pleased to announce the global availability of the new high-performance, low-cost, low-noise LS844 JFET from Linear Systems. As an authorized global distributor for Linear Systems, Micross is excited to provide the latest evolution of this classic dual JFET first introduced by Linear Systems more than 20 years ago, with immediate large-scale availability and large-volume pricing. The company has refined the part’s design and fabrication processes to improve its low noise, matching and Common Mode Rejection Ratio qualities while retaining the linearity and other characteristics sought by audio and other circuit designers.
The LS844 is a low-noise Junction Field Effect Transistor (JFET) ideal for precision, high-end audio, sensor and discrete operational amplifier applications. It features a unique design construction of interleaving both JFETs on the same piece of silicon to provide excellent matching and thermal tracking, as well as a low-noise profile having nearly zero popcorn noise and lower intermodulation distortion.
The LS844, Low Noise, Monolithic Dual, N-Channel JFET provides designers with a better-performing solution for obtaining tighter IDSS matching and better thermal tracking than using individual JFETs or non-monolithic dual JFETs. The part is an ideal combination of high transconductance, low noise (2.5nV/√Hz typical at f = 1kHz) and very low input capacitance (3pF typical CISS). Sometimes it is necessary to cascode a JFET in order to achieve higher bandwidth by eliminating the Miller effect multiplication of the gate-drain capacitance, even in cases where Crss is already low as with the LS844.
Applications for the LS844 include wideband differential amplifiers, high CMMR front ends, temperature compensated single-ended input amps, tight tracking current sources, low jitter high-speed comparators, impedance converters, acoustic sensors, piezo-based sensors, sensitive charge amplifiers, and much more.
“Through our long-standing partnership with Micross Components, we are excited to provide circuit designers with this next-generation dual JFET technology, offering lower noise with improved matching and common mode rejection ratio qualities, while retaining the linearity and other characteristics sought by audio and other circuit designers”, Paul Norton, Director of Customer and Distributor Engagement at Linear Integrated Systems.
“Linear Systems next-generation dual JFET technology further reinforces our expansive best-in-class portfolio of high-performance electronic solutions, enabling designers’ greater optimization of their devices,” said Mark Zack, Micross Components’ Sr. Vice President of Die & Wafer Services. “We are excited to offer the new LS844 Series Dual JFET globally, with immediate large-scale availability”.
