LM9044V

更新时间： 2024-11-22 22:31:11

品牌	Logo	应用领域
美国国家半导体 - NSC		传感器放大器
页数	文件大小	规格书
6页	128K
描述
LM9044 Lambda Sensor Interface Amplifier

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LM9044V 数据手册

February 1995

LM9044 Lambda Sensor Interface Amplifier

General Description

The LM9044 is a precision differential amplifier specifically

designed for operation in the automotive environment. Gain

accuracy is guaranteed over the entire automotive tempera-

vided to detect open circuit conditions on either or both in-

puts and force the output to a ‘‘home’’ position (a ratio of

the external reference voltage).

ture range ( 40 C to 125 C) and is factory trimmed prior

to package assembly. The input circuitry has been specifi-

cally designed to reject common-mode signals as much as

3V below ground on a single positive power supply. This

facilitates the use of sensors which are grounded at the

engine block while the LM9044 itself is grounded at chassis

potential. An external capacitor sets the maximum operating

frequency of the amplifier, thereby filtering high frequency

transients. Both inputs are protected against accidental

shorting to the battery and against load dump transients.

The input impedance is typically 1 MX.

Features

Normal circuit operation guaranteed with inputs up to

3V below ground on a single supply

Gain factory trimmed and guaranteed over temperature

b a

3% of full-scale from 40 C to 125 C)

(

Low power consumption (typically 1 mA)

Fully protected inputs

Input open circuit detection

Operation guaranteed over the entire automotive tem-

perature range ( 40 C to 125 C)

Single supply operation

The output op amp is capable of driving capacitive loads

and is fully protected. Also, internal circuitry has been pro-

Schematic and Connection Diagrams

TL/H/6744–1

Plastic Chip Carrier Package

Order Number LM9044V

See NS Package Number V20A

TL/H/6744–6

*Pins 1, 3, 4, 6, 8, 9, 10, 11, 13, 14, 16, 18, 19 are

trim pins and should be left floating.

Top View

1995 National Semiconductor Corporation

TL/H/6744

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6

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