LS846 LOW NOISE, LOW LEAKAGE SINGLE N-CHANNEL JFET Linear Integrated Systems FEATURES ULTRA LOW NOISE en = 3nV/√Hz LOW GATE LEAKAGE IG = 15pA 1 ABSOLUTE MAXIMUM RATINGS @ 25 °C (unless otherwise stated) Maximum Temperatures Storage Temperature -65 to +150 °C Operating Junction Temperature -55 to +135 °C Maximum Power Dissipation 350mW Continuous Power Dissipation @ +125 °C Maximum Currents Gate Forward Current IG(F) = 50mA Maximum Voltages Drain to Source VDSO = 60V Gate to Source VGSS = 60V Gate to Drain VGDS = 60V *For equivalent monolithic dual, see LS843 family. ELECTRICAL CHARACTERISTICS @ 25 °C (unless otherwise stated) SYMBOL BVGSS VGS(OFF) CHARACTERISTIC MIN Gate to Source Breakdown Voltage 60 Gate to Source Pinch-off Voltage 1 VGS Gate to Source Operating Voltage 0.5 IDSS Drain to Source Saturation Current 1.5 IG IG TYP MAX UNITS 3.5 CONDITIONS V VDS = 0, ID = 1nA V VDS = 15V, ID = 1nA 3.5 V 5 15 mA VDG = 15V, VGS = 0 Gate Operating Current 15 50 pA VDG = 15V, ID = 500µA Gate Operating Current Reduced VDG 5 30 pA VDG = 3V, ID = 500µA 100 pA VDG = 15V, VDS = 0 IGSS Gate to Source Leakage Current Yfss Full Conductance Transconductance Yfs Typical Conductance Transconductance 1000 1500 Yoss Full Output Conductance Yos Typical Output Conductance NF Noise Figure en Noise Voltage en µmho VGD = 15V, VGS = 0, f = 1kHz µmho VDG = 15V, ID = 500µA 20 µmho VDG = 15V, VGS = 0 2 µmho VDG = 15V, ID = 500µA 0.5 dB VDS = 15V, VGS = 0, RG = 10MΩ, f = 100Hz, NBW = 6Hz 7 nV/√Hz VDS = 15V, ID = 500µA, f = 1kHz, NBW = 1Hz Noise Voltage 11 nV/√Hz VDS = 15V, ID = 500µA, f = 10Hz, NBW = 1Hz CISS Common Source Input Capacitance 8 pF CRSS Common Source Reverse Transfer Cap. 3 pF 1. 1500 VDS = 15V, ID = 500µA 0.2 3 VDS = 15V, ID = 500µA 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. Linear Integrated Systems • 4042 Clipper Court • Fremont, CA 94538 • Tel: 510 490-9160 • Fax: 510 353-0261