LF442AMH NSC [National Semiconductor], LF442AMH Datasheet

LF442AMH

Manufacturer Part Number

LF442AMH

Description

Dual Low Power JFET Input Operational Amplifier

Manufacturer

NSC [National Semiconductor]

Datasheets

1.LF442AMH.pdf (12 pages)

2.LF442AMH.pdf (14 pages)

3.LF442AMH.pdf (12 pages)

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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 stan-

dard LM1458 while greatly improving the DC characteristics

of the LM1458. The amplifiers have the same bandwidth,

slew rate, and gain (10 k

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. A combination of careful layout de-

sign and internal trimming guarantees very low input offset

voltage and voltage drift. The LF442 also has a very low

equivalent input noise voltage for a low power amplifier.

The LF442 is pin compatible with the LM1458 allowing an

immediate 10 times reduction in power drain in many appli-

cations. The LF442 should be used where low power dissi-

pation and good electrical characteristics are the major con-

siderations.

Typical Connection

Ordering Information

LF442XYZ

X indicates electrical grade

Y indicates temperature range

Z indicates package type

BI-FET II

“M” for military

“C” for commercial

“H” or “N”

™

is a trademark of National Semiconductor Corporation.

load) as the LM1458 and only

DS009155-1

DS009155

Features

n 1/10 supply current of a LM1458:

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: 10

n High gain V

Connection Diagrams

Pin 4 connected to case

Order Number LF442AMH or LF442MH

Order Number LF442ACN or LF442CN

See NS Package Number H08A

See NS Package Number N08E

Dual-In-Line Package

Metal Can Package

10V, R

or LF442MH/883

Top View

= 10k: 50k (min)

400 µA (max)

DS009155-2

DS009155-4

www.national.com

April 1999

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