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AD8418BRMZ

Description
Common mode input voltage: -2V ~ 70V Gain (amplification factor): 20 V/V Number of channels: 1 Op amp type: Current Sense Monitoring type: High and Low Side Operating bandwidth: 250kHz Operating voltage: 2.7V ~ 5.5V bidirectional, Zero-Drift Current Sense Amplifier
CategoryAnalog mixed-signal IC    Current monitoring chip   
File Size496KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
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AD8418BRMZ Overview

Common mode input voltage: -2V ~ 70V Gain (amplification factor): 20 V/V Number of channels: 1 Op amp type: Current Sense Monitoring type: High and Low Side Operating bandwidth: 250kHz Operating voltage: 2.7V ~ 5.5V bidirectional, Zero-Drift Current Sense Amplifier

AD8418BRMZ Parametric

Parameter NameAttribute value
Common mode input voltage-2V ~ 70V
gain error±0.15%(Max)
Gain (amplification factor)20 V/V
Number of channels1
Op amp typeCurrent Sense
Monitoring typeHigh and Low Side
Extra featuresBidirectional, zero drift
working bandwidth250kHz
Operating Voltage2.7V ~ 5.5V
双向、零漂移、
电流检测放大器
AD8418
产品特性
失调漂移:0.1
µV/°C(典型值)
失调电压:±400
µV(最大值,全温度范围)
电源工½范围:2.7
V至5.5 V
集成电磁干扰(EMI)滤波器
高输入共模电压范围
工½电压范围:−2
V至+70 V
耐压范围:−4
V至+85 V
初始增益
= 20 V/V
½工½温度范围:−40°C至+125°C
双向操½
提供8引脚SOIC和8引脚MSOP封装
共模抑制比(CMRR):86
dB,直流至10 kHz
通过½½应用认证
概述
AD8418是一款高压、高分辨率电流检测放大器。设定初始
增益为20
V/V,在整个温度范围内的最大增益误差为±0.15%。
缓冲输出电压可以直接与任½典型½换器连接。AD8418在
输入共模电压处于−2
V至+70 V范围时,具有出色的输入共
模抑制性½;它½够在采样电阻上进行双向电流的测量,
适合各种½½和工业应用,包括电机控制、电池管理和电
磁阀控制等。
在−40°C至+125°C的整个温度范围内,AD8418½½提供极
½的性½。它采用零漂移内核,在整个工½温度范围和共
模电压范围内,失调漂移典型值为0.1
µV/°C。AD8418完全
符合½½应用规范,集成EMI滤波器和专利电路,在脉冲
½度调制(PWM)类输入共模电压下具有高输出精度。输入
失调电压的典型值为±200
µV。AD8418提供8引脚MSOP和
SOIC两种封装。
表1. 相关器件
产品型号
AD8205
AD8206
AD8207
AD8210
说明
电流检测放大器,增益=
50
电流检测放大器,增益=
20
高精度电流检测放大器,增益=
20
高速电流检测放大器,增益=
20
应用
高端电流检测
电机控制
电磁阀控制
电源管理
½端电流检测
诊断保护
功½框图
V
CM
= –2V TO +70V
70V
V
S
= 2.7V TO 5.5V
V
S
V
REF
1
V
CM
+IN
I
SHUNT
0V
R
SHUNT
–IN
50A
EMI
FILTER
G = 20
EMI
FILTER
AD8418
+
OUT
V
S
V
OUT
V
S
/2
I
SHUNT
0V
–50A
11546-001
GND
V
REF
2
图1.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Speci cations subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Document Feedback
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
ADI中文版数据手册是英文版数据手册的译文,敬请谅解翻译中可½存在的语言组织或翻译错误,ADI不对翻译中存在的差异或由此产生的错误负责。如需确认任½词语的准确性,请参考ADI提供
的最新英文版数据手册。

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Description Common mode input voltage: -2V ~ 70V Gain (amplification factor): 20 V/V Number of channels: 1 Op amp type: Current Sense Monitoring type: High and Low Side Operating bandwidth: 250kHz Operating voltage: 2.7V ~ 5.5V bidirectional, Zero-Drift Current Sense Amplifier OP-AMP EVAL BOARD FOR AD8418 EVAL BOARD FOR AD8418 Array/Network Resistor, Isolated, Thin Film, 0.125W, 158ohm, 75V, 0.1% +/-Tol, -10,10ppm/Cel, 1107,
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