TLH9660

December 1995

LF451 Wide-Bandwidth

JFET-Input Operational Amplifier

General Description

The LF451 is a low-cost high-speed JFET-input operational

amplifier with an internally trimmed input offset voltage (BI-

rent and yet maintains a large gain bandwidth product and a

fast slew rate In addition well matched high voltage JFET

input devices provide very low input bias and offset cur-

rents The LF451 is pin compatible with the standard

LM741 allowing designers to upgrade the overall perform-

ance of existing designs

The LF451 may be used in such applications as high-speed

integrators fast DA converters sample-and-hold circuits

and many other circuits requiring low input bias current high

input impedance high slew rate and wide bandwidth

Features

Y

Internally trimmed offset voltage

50 mV (max)

Y

Low input bias current

50 pA (typ)

Y

Low input noise current

001 pA

Y

Wide gain bandwidth

4 MHz (typ)

Y

High slew rate

13 V ms (typ)

Y

Low supply current

34 mA (max)

Y

High input impedance

Y

k

002% (typ)

Y

Low 1f noise corner

50 Hz (typ)

Y

Fast settling time to 001%

2 ms (typ)

Connection Diagram

SO Package

TLH9660 – 2

Top View

Order Number LF451CM

See NS Package Number M08A

Typical Connection

TLH9660 – 1

Simplified Schematic

TLH9660 – 3

C1995 National Semiconductor Corporation

RRD-B30M125Printed in U S A