Linear Systems JFETs LSK489B SOIC 8L ROHS

The LSK489B is a monolithic dual N-channel JFET amplifier designed for low-noise precision instrumentation and sensor applications. It is available in an 8-lead SOIC surface mount package with a typical input capacitance of 4pF and a noise voltage of 1.8nV/√Hz at 1kHz. The device features a gate-to-source breakdown voltage of 60V, a differential gate-to-source cutoff voltage of up to 20mV, and a common-mode rejection ratio of 102dB. Power dissipation is rated at 500mW total, with derating above 25°C. The LSK489B is characterized by a drain-to-source saturation current range of 8.0 to 15.0mA at VDG=15V and VGS=0. It is pin-compatible with the LSK389 in SOIC and TO-71 packages. The LSK489B grade is defined by a ΔIDSS tolerance of 7mA.