Linear Integrated Systems introduces the LSK489, a high-performance dual junction field effect transistor (JFET) specifically designed for high-end sensor front-end amplification applications. The LSK489 stands out with its exceptional characteristics, including ultra-low noise, high common mode rejection ratio, and superior matching capabilities.
To ensure accurate signal amplification, the LSK489 features a tight differential voltage match versus current, allowing for precise and consistent performance across different operating conditions. This feature enhances the overall accuracy and reliability of the system.
Furthermore, the LSK489 offers improved op amp speed settling time accuracy, resulting in enhanced signal processing capabilities. This allows for faster and more precise measurement and analysis of sensor outputs.
One significant advantage of the LSK489 is its low input capacitance. With minimized input capacitance, this JFET reduces the potential for unwanted distortion and intermodulation effects, ensuring high-fidelity signal amplification.
The LSK489 is available in two graded versions, LSK489A and LSK489B, which are characterized by their IDSS range. Additionally, an ungraded version, LSK489, is also available. The dual JFET halves are meticulously interwoven using a proprietary design, optimizing the matching characteristics and ensuring consistent performance between the two channels.
In summary, Linear Integrated Systems' LSK489 is a top-of-the-line dual JFET specifically engineered for high-end sensor front-end amplification. Its ultra-low noise, excellent common mode rejection ratio, tight differential voltage match, improved op amp settling time accuracy, low input capacitance, and minimal intermodulation distortion make it an ideal choice for demanding sensor applications.
Monolithic dual N-channel JFET
High CMRR 102 dB
Tightly matching
Ultra-low noise: en = 1.8 nV/√Hz at 1 kHz (typ.)
Low input capacitance (5 pF Ciss)
SOT-23 6L RoHS
Military sensors
Scientific telescopes, large-scale synoptic telescopes (LSST)*
Wide band differential Amps
High-speed, temperature-compensated, single-ended input amplifier amps
High-speed comparators
Impedance converters
Precision instrumentation
Ribbon microphones
Piezoelectric devices
Sonobuoys
High-end test and measurement
Medical equipment
High-end audio gear
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