TLH9297

February 1995

LF441 Low Power JFET

Input Operational Amplifier

General Description

The LF441 low power operational amplifier provides many

of the same AC characteristics as the industry standard

LM741 while greatly improving the DC characteristics of the

LM741 The amplifier has the same bandwidth slew rate

and gain (10 kX load) as the LM741 and only draws one

tenth the supply current of the LM741 In addition the well

matched high voltage JFET input devices of the LF441 re-

duce the input bias and offset currents by a factor of 10000

over the LM741 A combination of careful layout design and

internal trimming guarantees very low input offset voltage

and voltage drift The LF441 also has a very low equivalent

input noise voltage for a low power amplifier

The LF441 is pin compatible with the LM741 allowing an

immediate 10 times reduction in power drain in many appli-

cations The LF441 should be used where low power

dissipation and good electrical characteristics are the major

considerations

Features

Y

110 supply current of a LM741

200 mA (max)

Y

Low input bias current

50 pA (max)

Y

Low input offset voltage

05 mV (max)

Y

Low input offset voltage drift

10 mV C (max)

Y

High gain bandwidth

1 MHz

Y

High slew rate

1 V ms

Y

Low noise voltage for low power

Y

Low input noise current

Y

High input impedance

Y

50k (min)

Typical Connection

TLH9297 – 1

Ordering Information

LF441XYZ

X

indicates electrical grade

Y

indicates temperature range

‘‘M’’ for military

‘‘C’’ for commercial

Z

indicates package type

‘‘H’’ or ‘‘N’’

Connection Diagrams

Metal Can Package

TLH9297 – 2

Top View

Note

Pin 4 connected to case

Order Number LF441MH883

See NS Package Number H08A

Dual-In-Line Package

TLH9297 – 4

Top View

Order Number LF441ACN

LF441CM or LF441CN

See NS Package Number M08A or N08E

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A