U421 Vishay, U421 Datasheet
U421
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U421 Summary of contents
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... D Low Gate Leakage: 0 Low Noise D High CMRR: 102 dB DESCRIPTION The U421/423 are monolithic dual n-channel JFETs designed to provide very high input impedance for differential amplification and impedance matching. Among its many unique features, this series offers operating gate current specified at - 250 fA. ...
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... DS 0 kHz = kHz 0 kHz = kHz 0.4 1 MHz -55 to 125_C 102 DG D Limits U421 U423 Unit a Min Max Min Max -40 -40 "40 "40 V -0 1000 60 1000 - -0.25 -0. -250 -250 W -1.8 -1.8 V 0.3 1.5 0.3 1 0.12 0.35 0.12 0. 1.5 1.5 nV⁄ √ ...
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... -0.1 V 0.6 -0.2 V -0.3 V 0.4 -0.4 V -0.5 V -0.6 V 0.2 -0 0.5 -0.1 V 0.4 -0.2 V 0.3 -0.3 V -0.4 V 0.2 -0.5 V 0.1 -0.6 V -0.7 V 0.8 1 U421/423 Vishay Siliconix Gate Leakage Current T = 125_C 100 25_C 25_C GSS Drain-Gate Voltage (V) DG Output Characteristics -1.5 V GS(off -1.0 V ...
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... UNLESS OTHERWISE NOTED -0.8 -1 U423 U421 1000 = -1 V 1000 Gate-Source Differential Voltage vs. Drain Current 100 25_C A U423 10 U421 1 10 100 I - Drain Current (mA) D Common Mode Rejection Ratio vs. Drain Current 130 DV DG CMRR = 20 log D 120 GS1 GS2 110 100 ...
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... S-03180—Rev. D, 17-Feb-03 = 25_C UNLESS OTHERWISE NOTED MHz 0.8 0.6 0.4 0.2 0 -16 - kHz 1000 kHz 1000 U421/423 Vishay Siliconix Common-Source Reverse Feedback Capacitance vs. Gate-Source Voltage MHz -12 - Gate-Source Voltage (V) GS Equivalent Input Noise Voltage vs. Frequency 100 100 Frequency (Hz) On-Resistance and Output Conductance vs ...