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LF155/LF156/LF256/LF257/LF355/LF356/LF357 JFET Input OperaTIonal Amplifiers General DescripTIonThese are the first monolithic JFET input operaTIonal amplifiersto incorporate well matched, high voltage JFETs on thesame chip with standard bipolar transistors (BI-FET™ Technology).These amplifiers feature low input bias and offsetcurrents/low offset voltage and offset voltage drift, coupledwith offset adjust which does not degrade drift orcommon-mode rejecTIon. The devices are also designed forhigh slew rate, wide bandwidth, extremely fast settling time,low voltage and current noise and a low 1/f noise corner.FeaturesAdvantagesn Replace expensive hybrid and module FET op ampsn Rugged JFETs allow blow-out free handling comparedwith MOSFET input devicesn Excellent for low noise applications using either high orlow source impedance—very low 1/f cornern Offset adjust does not degrade drift or common-moderejection as in most monolithic amplifiersn New output stage allows use of large capacitive loads(5,000 pF) without stability problemsn Internal compensation and large differential input voltagecapability
