Datasheet > LM4140ACMX-1.0

LM4140ACMX-1.0

更新时间： 2024-11-08 22:38:59

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
15页	442K
描述
High Precision Low Noise Low Dropout Voltage

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LM4140ACMX-1.0 数据手册

July 2000

LM4140

High Precision Low Noise Low Dropout Voltage

Reference

General Description

The LM4140 series of precision references are designed to

combine high accuracy, low drift and noise with low power

dissipation in a small package.

Features

n High initial accuracy: 0.1%

n Ultra low noise

n Low Temperature Coefficient: 3 ppm/˚C (A grade)

n Low voltage operation: 1.8V

n SO-8 package

The LM4140 is the industry’s first reference with output volt-

age options lower than the bandgap voltage.

The key to the advance performance of the LM4140 is the

use of EEPROM registers and CMOS DACs for temperature

coefficient curvature correction and trimming of the output

voltage accuracy of the device during the final production

testing.

n Low dropout voltage: 20 mV (typ) 1mA

n Supply Current: 230 µA (typ), ≤ 1 µA disable mode

n Enable pin

n Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V,

and 4.096V

The major advantage of this method is the much higher reso-

lution available with DACs than is available economically

with most methods utilized by other bandgap references.

n Custom voltages from 0.5V to 4.5V

n Temperature range (0˚C to 70˚C)

The low input and dropout voltage, low supply current and

output drive capability of the LM4140 makes this product an

ideal choice for battery powered and portable applications.

Applications Summary

n Portable, battery powered equipment

n Instrumentation and test equipment

n Automotive

n Industrial process control

n Data acquisition systems

n Medical equipment

The LM4140 is available in three grades (A, B, C) with 0.1%

initial accuracy and 3, 6 and 10 ppm/˚C temperature coeffi-

cients. For even lower Tempco, contact National Semicon-

ductor.

The device performance is specified over the temperature

range (0˚C to +70˚C) and is available in compact 8-pin SO

package.

n Precision scales

n Servo systems

n Battery charging

For other output voltage options from 0.5V to 4.5V, con-

tact National Semiconductor.

Typical Application

Typical Temperature Coefficient

(Sample of 5 Parts)

DS101079-1

, Output bypass capacitor. See text for selection detail.

OUT

DS101079-23

Refer to the Ordering Information Table in this Data Sheet for Specific Part

Number

DS101079

www.national.com

12 3 4 5 6 7...15

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与LM4140ACMX-1.0相关器件

型号	品牌	获取价格	描述	数据表
LM4140ACMX-1.0/NOPB	TI	获取价格	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.024 V, PDSO8, SOIC-8, Voltage Reference
LM4140ACMX-1.2	NSC	获取价格	High Precision Low Noise Low Dropout Voltage
LM4140ACMX-2.0	NSC	获取价格	High Precision Low Noise Low Dropout Voltage
LM4140ACMX-2.5	NSC	获取价格	High Precision Low Noise Low Dropout Voltage
LM4140ACMX-2.5	TI	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5V, PDSO8, SOIC-8
LM4140ACMX-2.5/NOPB	NSC	获取价格	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO8, SOIC-8, Voltage Reference
LM4140ACMX-2.5/NOPB	TI	获取价格	High Precision Low Noise Low Dropout Voltage Reference
LM4140ACMX-4.1	NSC	获取价格	High Precision Low Noise Low Dropout Voltage
LM4140ACMX-4.1	TI	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 4.096V, PDSO8, SOIC-8
LM4140ACMX-4.1/NOPB	NSC	获取价格	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 4.096 V, PDSO8, SOIC-8, Voltage Reference

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