U440

U440 MONOLITHIC DUAL N-CHANNEL JFET Linear Systems replaces discontinued Siliconix U440 The U440 is a tightly matched Monolithic Dual N-Channel JFET The U440 are monolithic dual JFETs mounted in a single TO-71 package. The monolithic dual chip design reduces parasitics and gives better performance at very high frequencies while ensuring extremely tight matching. These devices are an excellent choice for use as wideband differential amplifiers in demanding test and measurement applications. The U440 is a direct replacement for discontinued Siliconix U440. The hermetically sealed TO-71 is well suited for military applications. (See Packaging Information). U440 Applications: ƒ Wideband Differential Amps ƒ High-Speed,Temp-Compensated SingleEnded Input Amps ƒ High-Speed Comparators ƒ Impedance Converters and vibrations detectors. MATCHING CHARACTERISTICS @ 25°C (unless otherwise stated)  SYMBOL  CHARACTERISTIC  |VGS1 – VGS2 |  Differential Gate to Source Cutoff Voltage  ∆|VGS1 – VGS2 | / ∆T  Differential Gate to Source Cutoff     Voltage Change with Temperature  IDSS1  / IDSS2  Gate to Source Saturation Current Ratio    Gfs1 / Gfs2  Forward Transconductance Ratio2    FEATURES  Direct Replacement for SILICONIX U440  HIGH CMRR  LOW GATE LEAKAGE  ABSOLUTE MAXIMUM RATINGS 1  @ 25°C (unless otherwise noted)  Maximum Temperatures  Storage Temperature  Operating Junction Temperature  Maximum Power Dissipation  Continuous Power Dissipation (Total)  Maximum Currents  Gate Current  Maximu...