LMP8601QMA

更新时间： 2024-11-23 07:03:03

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
22页	511K
描述
60V Common Mode, Bidirectional Precision Current Sensing Amplifier

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LMP8601QMA 数据手册

July 16, 2009

LMP8601/LMP8601Q

60V Common Mode, Bidirectional Precision Current

Sensing Amplifier

General Description

Features

The LMP8601 and LMP8601Q are fixed 20x gain precision

amplifiers. The part will amplify and filter small differential sig-

nals in the presence of high common mode voltages. The

input common mode voltage range is –22V to +60V when op-

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

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

LMP8601 and LMP8601Q are members of the Linear Mono-

lithic Precision (LMP^®) family and are ideal parts for unidirec-

tional and bidirectional current sensing applications. All

parameter values of the part 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 = 20x

TCV_OS

CMRR

10μV/°C max

90 dB min

1 mV max

−4V to 27V

−22V to 60V

■

Input offset voltage

CMVR at V_S= 3.3V

CMVR at V_S= 5.0V

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

LMP8601Q available in Automotive AEC-Q100 Grade 1

qualified version

■

Single supply bidirectional operation

All Min / Max limits 100% tested

The part has a precise gain of 20x which is adequate in most

targeted applications to drive an ADC to its full scale value.

The fixed gain is achieved in two separate stages, a pream-

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

with a gain of 2x. The connection between the two stages of

the signal path is brought out on two pins to enable the pos-

sibility 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 applica-

tions 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

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 LMP8601Q incorporates enhanced manufacturing and

support processes for the automotive market, including defect

detection methodologies. Reliability qualification is compliant

with the requirements and temperature grades defined in the

AEC Q100 standard.

Typical Applications

20157101

LMP™ is a trademark of National Semiconductor Corporation.

201571

www.national.com

12 3 4 5 6 7...22

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与LMP8601QMA相关器件

型号	品牌	获取价格	描述	数据表
LMP8601QMA/NOPB	TI	获取价格	60-V Common-Mode Bidirectional Precision Current Sensing Amplifier
LMP8601QMAX	NSC	获取价格	60V Common Mode, Bidirectional Precision Current Sensing Amplifier
LMP8601QMAX/NOPB	TI	获取价格	60-V Common-Mode Bidirectional Precision Current Sensing Amplifier
LMP8602	TI	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
LMP8602	NSC	获取价格	60V Common Mode, Fixed Gain, Bidirectional Precision Current Sensing Amplifier
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

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