I nV Low Noise Monolithic Dual N-Channel JFET

Product Announcement from Linear Integrated Systems, Inc.

I nV Low Noise Monolithic Dual N-Channel JFET-Image

LSK389A, LSK389B, LSK389C Series 1nV Low Noise Monolithic Dual N-Channel JFETs. Designed Specifically for Audio, Instrumentation, Medical and Sensor Applications


  • Low Noise (en <1 nv/hz @ 1khz, 2 nv/hz @ 10hz typ)
  • Monolithic Dual Construction - (2 JFETs on 1 piece of silicon)
  • Monolithic Dual - Tighter IDSS Matching & Better Thermal Tracking
  • Low Capacitance (crss= 20pf max)
  • High Gain (Yfs=22ms min)
  • High Input Impedance
  • High Breakdown Voltage (BVGSS=40Volts Min)
  • Available in Surface Mount SOIC-8 lead packages
  • Also available in Tested Die, and TO-71 6 lead packages
  • Available with special testing to customer specification
  • Improved functional Replacement(not same pinout)for Toshiba 2SK389
  • ROHS Compliant Versions Available
  • Instant Availability


  • Audio Amplifiers
  • Preamps
  • Discrete Low-Noise Operational Amplifiers
  • Battery-Operated Audio Preamps
  • Guitar Pickups
  • Effects Pedals
  • Microphones
  • Audio Mixer Consoles
  • Acoustic Sensors
  • Sonobouys
  • Hydrophones
  • Chemical and Radiation Detectors
  • Instrumentation Amplifiers
  • Accelerometers
  • CT Scanners Input Stages
  • Oscilloscope Input Stages
  • Electrometers
  • Vibration Detectors
  • LNA(Low Noise Antenna)


Contact LIS today to place your Purchase Order, or request a Quotation or Samples 800-359-4023, www.linearsystems.com