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LF442 Datasheet Dual Low Power JFET Input Operational Amplifier

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LF442 Dual Low Power JFET Input Operational Amplifier August 2000 LF442 Dual Low Power JFET Input Operational Amplifier.

General Description

The LF442 dual low power operational amplifiers provide many of the same AC characteristics as the industry standard LM1458 while greatly improving the DC characteristics of the LM1458.

The amplifiers have the same bandwidth, slew rate, and gain (10 kΩ load) as the LM1458 and only draw one tenth the supply current of the LM1458.

In addition the well matched high voltage JFET input devices of the LF442 reduce the input bias and offset currents by a factor of 10,000 over the LM1458.

Key Features

  • n 1/10 supply current of a LM1458: 400 µA (max) n Low input bias current: 50 pA (max) n Low input offset voltage: 1 mV (max) n Low input offset voltage drift: 10 µV/˚C (max) n High gain bandwidth: 1 MHz n High slew rate: 1 V/µs n Low noise voltage for low power: n Low input noise current: n High input impedance: 1012Ω n High gain VO = ±10V, RL = 10k: 50k (min) Typical Connection Connection Diagrams Metal Can Package Ordering Information LF442XYZ X indicates electrical grade Y indicates temper.

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