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| B-42 01/99 IFN424, IFN425, IFN426 Dual N-Channel Silicon Junction Field-Effect Transistor Very High Impedance Differential Amplifiers Electrometers Absolute maximum ratings at TA = 25C Device Dissapation (Derate 3.2 mW/C to 50C) Total Device Dissipation (Derate 6 mW/C to 150 C) Storage Temperature Range 400 mW 750 mW - 60 C to 200 C At 25C free air temperature: Static Electrical Characteristics Gate Source Breakdown Voltage Gate to Gate Breakdown Voltage Gate Reverse Current Gate Operating Current Gate Source Cutoff Voltage Gate Source Voltage Drain Saturation Current (Pulsed) Dynamic Electrical Characteristics Common Source Forward Transconductance gfs IFN424, IFN425, IFN426 Min V(BR)GSS BVG1G2 IGSS IG VGS(OFF) VGS IDSS 60 1800 - 0.4 - 40 40 -3 -3 - 0.5 - 500 -3 - 2.9 Typ - 60 Max Unit V V pA nA pA pA V V A Process NJ01 Test Conditions IG = - 1 A, VDS = OV IG = - 1 A, ID = OA, IS = OA VGS = - 20V, VDS = OV VGS = - 20V, VDS = OV VDS = 10V, ID = 30 A VDS = 10V, ID = 30 A VDS = 10V, ID = 1 nA VDS = 10V, ID = 30 A VDS = 10V, VGS = O V TA = +125C TA = +125C 100 1500 3 3 1.5 20 70 1 S S pF pF nV/Hz VDS = 10V, VGS = O V VDS = 10V, ID = 30 A VDS = 10V, VGS = O V VDS = 10V, VGS = O V VDS = 10V, ID = 30 A VDS = 10V, ID = 30 A RG = 1 M f = 1 kHz f = 1 kHz f = 1 MHz f = 1 MHz f = 10 Hz f = 10 Hz Common Source Output Conductance Common Source Input Capacitance Equivalent Short Circuit Input Noise Voltage gos Ciss eN NF Common Source Reverse Transfer Capacitance Crss Noise Figure dB Max - IFN424 IFN425 IFN426 Differential Gate Source Voltage Differential Gate Source Voltage With Temperature |VGS1- VGS2| |VGS1- VGS2| 10 10 15 25 25 40 mV V/C VDG = 10V, ID = 30 A VDG = 10V, ID = 30 A TA = - 55C TB = 25C TC = 125C T Min - IFN424 IFN425 IFN426 Common Mode Rejection Ratio CMRR 90 80 80 dB VDG = 10V to 20V, ID = 30 A TO78 Package See Section G for Outline Dimensions Pin Configuration 1 Source 1, 2 Drain 1, 3 Gate 1, 4 Case, 5 Source 2, 6 Drain 2, 7 Gate 2, 8 Omitted 1000 N. Shiloh Road, Garland, TX 75042 (972) 487-1287 FAX (972) 276-3375 www.interfet.com |
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