TLH9710

December 1994

LF453 Wide-Bandwidth Dual

JFET-Input Operational Amplifiers

General Description

The LF453 is a low-cost high-speed dual JFET-input oper-

ational amplifier with an internally trimmed input offset volt-

age (BI-FET II technology) The device requires a low supply

current and yet the amplifiers maintain a large gain band-

width product and a fast slew rate In addition well matched

high voltage JFET input devices provide very low input bias

and offset currents The LF453 is pin compatible with the

standard LM1558 allowing designers to upgrade the overall

performance of existing designs

The LF453 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

Y

Wide gain bandwidth

4 MHz (typ)

Y

High slew rate

13 V ms (typ)

Y

Low supply current

65 mA (max)

Y

High input impedance

Y

Low total harmonic distortion

k

002% (typ)

Y

Low 1f noise corner

50 Hz (typ)

Y

Fast settling time to 001%

2 ms (typ)

Typical Connection

TLH9710 – 1

Connection Diagram

SO Package

TLH9710 – 2

Top View

Order Number LF453CM

See NS Package Number M08A

Simplified Schematic

TLH9710 – 3

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A