LS831 MONOLITHIC DUAL N-CHANNEL JFET
Linear Systems Ultra Low Leakage Low Drift Monolithic Dual JFET
The LS831 is a high-performance monolithic dual JFET featuring extremely low noise, tight offset voltage and low drift over temperature specifications, and is targeted for use in a wide range of precision instrumentation applications. The LS831 features a 25mV offset and 10-µV/°C drift. The 8 Pin P-DIP and 8 Pin SOIC provide ease of manufacturing, and the symmetrical pinout prevents improper orientation. (See Packaging Information). FEATURES ULTRA LOW DRIFT | V GS1‐2 / T| ≤10µV/°C ULTRA LOW LEAKAGE IG = 80fA TYP. LOW NOISE en = 70nV/√Hz TYP. LOW CAPACITANCE CISS = 3pF MAX. ABSOLUTE MAXIMUM RATINGS @ 25°C (unless otherwise noted) Maximum Temperatures Storage Temperature ‐65°C to +150°C Operating Junction Temperature +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 ‐IG Gate Reverse Current 10µA Maximum Power Dissipation Device Dissipation @ Free Air – Total 400mW @ +125°C MATCHING CHARACTERISTICS @ 25°C UNLESS OTHERWISE NOTED SYMBOL CHARACTERISTICS VALUE UNITS CONDITIONS | V GS1‐2 / T| max. DRIFT VS. 10 µV/°C VDG=10V, ID=30µA TEMPERATURE TA=‐55°C to +125°C | V GS1‐2 | max. OFFSET VOLTAGE 25 mV VDG=10V, ID=30µA TYP. 60 ‐‐ 300 100 0. 6 ‐‐ 1 2 ‐‐ ‐‐ ‐‐ ‐‐ 5 1 ‐‐ ‐‐ 90 90 ‐‐ 20 ‐‐ ‐‐ ‐‐ MAX. ‐‐ ‐‐ 500 200 3 10 5 4. 5 4 0. 1 0. 1 0. 2 0. 5 ‐‐ 5 0. 5 ‐‐ ‐‐ 1 70 3 1. 5 0. 1 UNITS V V µmho µmho % mA % V V pA nA pA nA pA µmho µmho dB CONDITIONS VDS = 0 ID=1nA I G= 1nA ID= 0 IS= 0 VDG= 10V VGS= 0V f = 1kHz VDG= 10V ID= 30µA f = 1kHz VDG= 10V VGS= 0V VDS= 10V ID= 1nA ...