LSK389BSOIC8LTB ROHS

$14.10

Description：JFET 2N-CH 40V 8SOIC
Series：LSK389

SKU:4e6632c17eb0 Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET 2N-CH 40V 8SOIC
Series：LSK389
Mfr：Linear Integrated Systems, Inc.
Package：Tube
FET Type：2 N-Channel (Dual)
Voltage - Breakdown (V(BR)GSS)：40 V
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：6 mA @ 10 V
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：300 mV @ 100 nA
Input Capacitance (Ciss) (Max) @ Vds：25pF @ 10V
Resistance - RDS(On)：-
Power - Max：400 mW
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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LSK389BSOIC8LTB ROHS

Overview

The LSK389BSOIC8LTB is an ultra-low noise monolithic dual N-channel JFET amplifier from Linear Integrated Systems, designed as a second-source replacement for the 2SK389. It features a typical voltage noise of 1.6 nV/√Hz at 1 kHz and 3.2 nV/√Hz at 10 Hz. The device offers four IDSS grades; the 'B' grade specifies a saturation current range of 6.0 to 12.0 mA with a maximum gate threshold offset of 15 mV. It provides high transconductance (20 mS typical) and a 40 V breakdown voltage in an SOIC-8L package.

Feature Summary

Ultra-low noise performance with guaranteed elimination of burst noise
Monolithic dual construction ensuring tight matching and thermal tracking
High signal-to-noise ratio due to low and tightly matched gate threshold voltages
Wide output swing suitable for maximizing battery-operated applications

Applications

Audio amplifiers and preamps
Discrete low-noise operational amplifiers
Battery-operated audio preamps
Acoustic sensors and sonic imaging
Hydrophones and sonobuoys

Procurement Notes

Verify that the specific ordering suffix corresponds to the required IDSS grade and package type. Confirm RoHS compliance status matches project requirements. Ensure the component meets the exact electrical specifications needed for the target application, particularly regarding noise and matching characteristics.

Selection Notes

Select this component when industry-leading low noise and precise matching are critical. The B-grade IDSS range suits applications requiring moderate drain currents. Consider the monolithic design for superior thermal tracking compared to discrete matched pairs. Evaluate the 40V breakdown voltage for headroom needs in high transient content amplifiers.

Part Context

The LSK389 series serves as a flagship product for Linear Integrated Systems, filling the gap left by discontinued components like the 2SK389. It is positioned for use in ultra-high-end audio and sensor industries where minimizing system noise is paramount. The series includes A, B, C, and D grades differentiated by IDSS ranges.