LSK389 ULTRA LOW NOISE MONOLITHIC DUAL N-CHANNEL JFET Linear Integrated Systems FEATURES ULTRA LOW NOISE TIGHT MATCHING HIGH BREAKDOWN VOLTAGE HIGH GAIN LOW CAPACITANCE en = 0.9nV/√Hz (typ) |VGS1-2| = 20mV max BVGSS = 40V max Yfs = 20mS (typ) 25pF typ TO-71 BOTTOM VIEW IMPROVED SECOND SOURCE REPLACEMENT FOR 2SK389 ABSOLUTE MAXIMUM RATINGS1 @ 25 °C (unless otherwise stated) Maximum Temperatures Storage Temperature Operating Junction Temperature Maximum Power Dissipation Continuous Power Dissipation @ +125 °C Maximum Currents Gate Forward Current Maximum Voltages Gate to Source Gate to Drain G1 D1 3 2 S1 S2 5 6 1 -65 to +150 °C -55 to +135 °C 7 D2 G2 SOIC-A S1 1 8 G2 D1 2 7 SS SS 3 6 D2 G1 4 5 S2 400mW IG(F) = 10mA *For equivalent single version, see LSK170 family. VGSS = 40V VGDS = 40V MATCHING CHARACTERISTICS @ 25 °C (unless otherwise stated) SYMBOL VGS1 − VGS2 IDSS1 IDSS2 CHARACTERISTIC Differential Gate to Source Cutoff Voltage MIN Gate to Source Saturation Current Ratio 0.9 TYP MAX UNIT CONDITIONS 20 mV VDS = 10V, ID = 1mA - VDS = 10V, VGS = 0V ELECTRICAL CHARACTERISTICS @ 25 °C (unless otherwise stated) SYMBOL BVGSS VGS(OFF) IDSS IGSS CHARACTERISTIC MIN Gate to Source Breakdown Voltage Gate to Source Pinch-off Voltage Drain to Source Saturation Current MAX UNITS 40 0.15 2 LSK389A 2.6 6.5 LSK389B 6 12 LSK389C 10 20 Gate to Source Leakage Current Linear Integrated Systems TYP 200 CONDITIONS V VDS = 0, ID = 100µA V VDS = 10V, ID = 0.1µA mA VDS = 10V, VGS = 0 pA VGS = -30V, VDS = 0 • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261 ELECTRICAL CHARACTERISTICS CONT. @ 25 °C (unless otherwise stated) SYMBOL CHARACTERISTIC MIN TYP 8 20 MAX UNITS Yfs Full Conduction Transconductance en Noise Voltage 0.9 1.9 nV/√Hz en Noise Voltage 2.5 4 nV/√Hz Common Source Input Capacitance Common Source Reverse Transfer Cap. 25 5.5 CISS CRSS mS pF pF CONDITIONS VDS = 10V, VGS = 0, IDSS = 3mA, f = 1kHz VDS = 10V, ID = 2mA, f = 1kHz, NBW = 1Hz VDS = 10V, ID = 2mA, f = 10Hz, NBW = 1Hz VDS = 10V, VGS = 0, f = 1MHz, VDG = 10V, ID = 0, f = 1MHz, ORDERING INFORMATION LSK389 - A - SOIC-8 IDSS Range Package A 2.6 - 6.5 mA B 6 - 12 mA C 10 - 20 mA 71 SOIC-8 TO-71 6L SOIC-A 8L PACKAGE DIMENSIONS SOIC TO-71 Six Lead 0.230 DIA. 0.209 0.195 DIA. 0.175 0.030 MAX. 0.021 0.150 0.115 6 LEADS 0.014 0.018 0.500 MIN. 1 8 2 7 3 6 4 5 0.150 0.157 0.0075 0.0098 0.050 5 6 1 0.046 0.036 1. 0.2284 0.2440 DIMENSIONS IN INCHES 2 3 45° 0.189 0.196 0.0040 0.0098 0.019 DIA. 0.016 0.100 0.050 7 0.048 0.028 Absolute maximum ratings are limiting values above which serviceability may be impaired. 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. Revised 07 December 2005. Linear Integrated Systems • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261