Datasheet > LMP8602

LMP8602

更新时间： 2024-11-26 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	579K
描述
60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier

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LMP8602 数据手册

March 18, 2010

LMP8602/LMP8602Q/

LMP8603/LMP8603Q

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

CMRR

Input offset voltage

CMVR at V_S= 3.3V

CMVR at V_S= 5.0V

10μV/°C max

90 dB min

1 mV max

−4V to 27V

−22V to 60V

■

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.

LMP8602Q and LMP8603Q available in Automotive AEC-

Q100 Grade 1 qualified version

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

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.

Battery management systems

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

package and in a 8–Pin MSOP package.

The LMP8602Q and LMP8603Q incorporate enhanced man-

ufacturing and support processes for the automotive market,

including defect detection methodologies. Reliability qualifi-

cation is compliant with the requirements and temperature

grades defined in the AEC Q100 standard.

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LMP8602相关器件

型号	品牌	获取价格	描述	数据表
LMP8602_10	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602MA	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602MA	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602MA/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 \| D \| 8 \| -4
LMP8602MAX	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602MAX	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision
LMP8602MAX/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 \| D \| 8 \| -4
LMP8602MM	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602MM	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602MM/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 \|

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