LMP8603MMX

更新时间： 2024-11-21 05:42:27

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
24页	572K
描述
60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier

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LMP8603MMX 数据手册

July 17, 2009

LMP8602/LMP8603

60V Common Mode, Fixed Gain, Bidirectional Precision

Current Sensing Amplifier

General Description

Features

The LMP8602 and LMP8603 are fixed gain precision ampli-

fiers. The parts will amplify and filter small differential signals

in the presence of high common mode voltages. The input

common mode voltage range is –22V to +60V when operating

from a single 5V supply. With a 3.3V supply, the input com-

mon mode voltage range is from –4V to +27V. The LMP8602

and LMP8603 are members of the Linear Monolithic Precision

(LMP^®) family and are ideal parts for unidirectional and bidi-

rectional current sensing applications. All parameter values

of the parts that are shown in the tables are 100% tested and

all bold values are also 100% tested over temperature.

Unless otherwise noted, typical values at T_A= 25°C,

V_S= 5.0V, Gain = 50x (LMP8602), Gain = 100x (LMP8603)

TCV_os

10μV/°C max

90 dB min

1 mV max

−4V to 27V

−22V to 60V

■

CMRR

Input offset voltage

CMVR at V_S= 3.3V

CMVR at V_S= 5.0V

Operating ambient temperature range −40°C to 125°C

Single supply bidirectional operation

All Min / Max limits 100% tested

The parts have a precise gain of 50x for the LMP8602 and

100x for the LMP8603, which are adequate in most targeted

applications to drive an ADC to its full scale value. The fixed

gain is achieved in two separate stages, a preamplifier with a

gain of 10x and an output stage buffer amplifier with a gain of

5x for the LMP8602 and 10x for the LMP8603. The connection

between the two stages of the signal path is brought out on

two pins to enable the possibility to create an additional filter

network around the output buffer amplifier. These pins can

also be used for alternative configurations with different gain

as described in the applications section.

Applications

High side and low side driver configuration current sensing

■

Bidirectional current measurement

Current loop to voltage conversion

Automotive fuel injection control

Transmission control

Power steering

Battery management systems

■

The mid-rail offset adjustment pin enables the user to use

these devices for bidirectional single supply voltage current

sensing. The output signal is bidirectional and mid-rail refer-

enced when this pin is connected to the positive supply rail.

With the offset pin connected to ground, the output signal is

unidirectional and ground-referenced.

The LMP8602 and LMP8603 are available in a 8–Pin SOIC

package and in a 8–Pin MSOP package.

Typical Applications

30083401

LMP™ is a trademark of National Semiconductor Corporation.

300834

www.national.com

12 3 4 5 6 7...24

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与LMP8603MMX相关器件

型号	品牌	获取价格	描述	数据表
LMP8603MMX/NOPB	TI	获取价格	具有直列式滤波器功能的 -22V 至 60V、双向电流感应放大器 \| DGK \| 8 \|
LMP8603Q	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8603Q	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8603-Q1	TI	获取价格	具有直列式滤波器功能的 AEC-Q100、-22V 至 60V、双向电流感应放大器
LMP8603QMA	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8603QMA	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8603QMA/NOPB	TI	获取价格	具有直列式滤波器功能的 AEC-Q100、-22V 至 60V、双向电流感应放大器 \| D
LMP8603QMAX	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8603QMAX	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8603QMAX/NOPB	TI	获取价格	具有直列式滤波器功能的 AEC-Q100、-22V 至 60V、双向电流感应放大器 \| D

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