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AD8418AWHRMZ-RL

更新时间： 2024-01-07 10:43:09
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
17页 402K
描述
Bidirectional, Zero-Drift, Current Sense Amplifier

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AD8418AWHRMZ-RL 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：MSOP-8
针数：8Reach Compliance Code：compliant
风险等级：5.58模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：S-PDSO-G8JESD-609代码：e3
长度：3 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：150 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260座面最大高度：1.1 mm
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2.7 V
标称供电电压 (Vsup)：5 V表面贴装：YES
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3 mmBase Number Matches：1

AD8418AWHRMZ-RL 数据手册

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Bidirectional, Zero Drift,  
Current Sense Amplifier  
AD8418A  
Data Sheet  
FEATURES  
GENERAL DESCRIPTION  
Typical 0.1 μV/°C offset drift  
The AD8418A is a high voltage, high resolution current shunt  
amplifier. It features an initial gain of 20 V/V, with a maximum  
0.1ꢀ5 gain error over the entire temperature range. The buffered  
output voltage directly interfaces with any typical converter. The  
AD8418A offers excellent input common-mode rejection from  
−2 V to +70 V. e AD8418A performs bidirectional current  
measurements across a shunt resistor in a variety of automotive  
and industrial applications, including motor control, power  
management, and solenoid control.  
Maximum 200 μV voltage offset over full temperature range  
2.7 V to 5.5 V power supply operating range  
Electromagnetic interference (EMI) filters included  
High common-mode input voltage range  
−2 V to +70 V continuous  
−4 V to +85 V survival  
Minimum DC common-mode rejection ratio (CMRR): 90 dB  
Initial gain = 20 V/V  
Wide operating temperature range  
AD8418AWB: −40°C to +125°C  
AD8418AWH: −40°C to +150°C  
Bidirectional operation  
Available in 8-lead SOIC and 8-lead MSOP  
Qualified for automotive applications  
The AD8418A offers breakthrough performance throughout  
the −40°C to +1ꢀ0°C temperature range. It features a zero drift  
core, which leads to a typical offset drift of 0.1 μV/°C throughout  
the operating temperature range and the common-mode voltage  
range. The AD8418A is qualified for automotive applications.  
The device includes EMI filters and patented circuitry to enable  
output accuracy with pulse-width modulation (PWM) type  
input common-mode voltages. The typical input offset voltage  
is 100 μV. The AD8418A is offered in 8-lead MSOP and SOIC  
packages.  
APPLICATIONS  
High-side current sensing in  
Motor controls  
Solenoid controls  
Table 1. Related Devices  
Power management  
Low-side current sensing  
Diagnostic protection  
Part No.  
AD8205  
AD8206  
AD8207  
AD8210  
AD8417  
Description  
Current sense amplifier, gain = 50  
Current sense amplifier, gain = 20  
High accuracy current sense amplifier, gain = 20  
High speed current sense amplifier, gain = 20  
High accuracy current sense amplifier, gain = 60  
FUNCTIONAL BLOCK DIAGRAM  
V
= –2V TO +70V  
V = 2.7V TO 5.5V  
S
CM  
70V  
V
V
1
REF  
S
V
OUT  
V
V
S
CM  
0V  
AD8418A  
+IN  
–IN  
EMI  
+
–
FILTER  
I
SHUNT  
OUT  
G = 20  
R
SHUNT  
V /2  
S
EMI  
FILTER  
50A  
SHUNT  
–50A  
I
0V  
GND  
V
2
REF  
Figure 1.  
Rev. B  
Document Feedback  
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. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2013–2017 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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