U421 TO-78 7L ROHS

U421, U422, U423, U424, U425, U426 LOW LEAKAGE LOW DRIFT MONOLITHIC DUAL N-CHANNEL JFET AMPLIFIER FEATURES HIGH INPUT IMPEDANCE IG=0.25pA MAX HIGH GAIN gfs=120µS MIN LOW POWER OPERATION VGS(off)=2V MAX ABSOLUTE MAXIMUM RATINGS NOTE 1 TO-78 SOIC TOP VIEW TOP VIEW @ 25 °C (unless otherwise noted) Maximum Temperatures Storage Temperature -55 to +150°C Operating Junction Temperature -55 to +150°C Maximum Voltage and Current for Each Transistor NOTE 1 -VGSS Gate Voltage to Drain or Source 40V -VDSO Drain to Source Voltage 40V IG(f) Gate Forward Current 10mA Case & Substrate Maximum Power Dissipation 5002 mW Total Device Dissipation TA = 25ºC ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted) SYMBOL CHARACTERISTIC3 U421 U422 U423 U424 U425 │∆VGS1-2/∆T│max. Drift vs. Temperature 10 25 40 10 25 U426 UNITS 40 µV/ºC CONDITIONS VDG = 10V ID = 30µA TA = -55ºC to +125ºC │VGS1-2│max. Offset Voltage 10 15 25 10 15 25 mV VDG =10V ID = 30µA Max -2.0 -2.0 -2.0 -3.0 -3.0 -3.0 V VDS=10V ID=1nA Min -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 Max -1.8 -1.8 -1.8 -2.9 -2.9 -2.9 V VDS=10V ID=30µA ID=30µA GATE VOLTAGE VGS(off) Pinchoff Voltage VGS Operating Range IGTYP. Operating -.25 -.25 -.25 -.500 -.500 -.500 pA VDS=10V IGTYP. High Temperature -250 -250 -250 -500 -500 -500 pA TA=+125ºC IGSSTYP. Gate Reverse Current -1.0 -1.0 -1.0 -3.0 -3.0 -3.0 pA VDS=0V IGSSTYP. Gate Reverse Current 1.0 1.0 1.0 3.0 3.0 3.0 nA TA=+125ºC SYMBOL CHARACTERISTIC MIN. TYP. MAX. BVGSS Breakdown Voltage -40 -60 -- V VDS= 0V IG= -1nA BVGGO Gate-to-Gate Breakdown ±40 -- -- V IG1G2= ±1µA ID= 0A IS= 0A UNITS VGS=-20V CONDITIONS TRANSCONDUCTANCE gfs Full Conduction 300 -- 1500 µS VDS= 10V VGS= 0 f = 1kHz gfs Typical Operation 120 200 350 µS VDG= 10V ID= 30µA f = 1kHz DRAIN CURRENT 60 -- 1000 µA U421-3 VDS= 10V VGS= 0 Full Conduction 60 -- 1800 µA U424-6 IDSS Linear Integrated Systems • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261 Doc 201124 07/24/2019 Rev#A14 ECN# U421 U422 U423 U424 U425 U426 SYMBOL CHARACTERISTIC MIN. TYP. MAX. UNITS CONDITIONS OUTPUT CONDUCTANCE gos Full Conduction -- -- 10 µS VDS= 10V VGS= 0 gos Operating -- 0.1 3.0 µS VDG= 10V ID= 30µA COMMON MODE REJECTION CMRR -20 log │V GS1-2/ΔVDS│ -- 90 -- dB ΔVDS= 10 to 20V ID=30µA CMRR -20 log │V GS1-2/ΔVDS│ -- 90 -- dB ΔVDS= 5 to 10V ID=30µA -- -- 1.0 dB NOISE NF Figure VDG= 10V, ID= 30µA, RG=10MΩ f= 10Hz en Voltage -- 20 nV/√Hz 70 10 VDG= 10V ID= 30µA f= 10Hz VDG= 10V ID= 30µA f= 1kHz CAPACITANCE CISS Input -- -- 3.0 pF VDS= 10V VGS= 0 f= 1MHz CRSS Reverse Transfer -- -- 1.5 pF VDS= 10V VGS= 0 f= 1MHz TO-71 TO-78 TO-78 TO-71 Six Lead 0.230 DIA. 0.209 0.195 DIA. 0.175 0.030 MAX. 0.210 0.150 0.170 0.115 6 LEADS 0.500 MIN. 0.019 DIA. 0.016 0.305 0.335 P-DIP 0.335 0.370 MAX. 0.040 0.165 0.185 0.016 0.019 DIM. A MIN. 0.500 0.016 0.021 DIM. B SEATING PLANE SOIC 0.200 0.100 2 3 45° 0.046 0.036 2 3 4 1 5 76 5 6 1 0.100 0.029 0.045 0.050 0.100 7 45° 0.048 0.028 0.150 (3.81) 0.158 (4.01) 0.188 (4.78) 0.197 (5.00) 0.028 0.034 0.228 (5.79) 0.244 (6.20) Note: All Dimensions in inches NOTES: 1. These ratings are limiting values above which the serviceability of any semiconductor may be impaired 2. Derate 4mW/ºC above 25ºC 3. All MIN/TYP/MAX limits are absolute numbers. Negative signs indicate electrical polarity only. Information furnished by Linear Integrated Systems is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Linear Integrated Systems. Linear Integrated Systems develops and produces the highest performance semiconductors of their kind in the industry. Linear Systems, founded in 1987, uses patented and proprietary processes and designs to create its high performance discrete semiconductors. Expertise brought to the company is based on processes and products developed at Amelco, Union Carbide, Intersil and Micro Power Systems by company founder John H. Hall. Linear Integrated Systems • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261 Doc 201124 07/24/2019 Rev#A14 ECN# U421 U422 U423 U424 U425 U426