Document
LF155/LF156/LF256/LF257/LF355/LF356/LF357 JFET Input Operational Amplifiers
December 2001
LF155/LF156/LF256/LF257/LF355/LF356/LF357
JFET Input Operational Amplifiers
General Description
These are the first monolithic JFET input operational amplifiers to incorporate well matched, high voltage JFETs on the same chip with standard bipolar transistors (BI-FET™ Technology). These amplifiers feature low input bias and offset currents/low offset voltage and offset voltage drift, coupled with offset adjust which does not degrade drift or common-mode rejection. The devices are also designed for high slew rate, wide bandwidth, extremely fast settling time, low voltage and current noise and a low 1/f noise corner.
Features
Advantages n Replace expensive hybrid and module FET op amps n Rugged JFETs allow blow-out free handling compared
with MOSFET input devices n Excellent for low noise applications using either high or
low source impedance — very low 1/f corner n Offset adjust does not de.