Datasheet > AD8418AWHRMZ-RL

AD8418AWHRMZ-RL

更新时间： 2024-11-25 20:40:35

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 数据手册

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

= –2V TO +70V

V = 2.7V TO 5.5V

70V

REF

OUT

AD8418A

+IN

–IN

EMI

–

FILTER

SHUNT

OUT

G = 20

SHUNT

V /2

EMI

FILTER

50A

SHUNT

–50A

GND

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.

Technical Support

www.analog.com

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AD8418AWHRMZ-RL 替代型号

型号	品牌	替代类型	描述	数据表
AD8418AWHRMZ	ADI	完全替代	Bidirectional, Zero-Drift, Current Sense Amplifier

与AD8418AWHRMZ-RL相关器件

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AD8418AWHRZ	ADI	获取价格	Bidirectional, Zero-Drift, Current Sense Amplifier
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AD8418WBRZ	ADI	获取价格	Bidirectional, Zero Drift, Current Sense Amplifier
AD8418WBRZ-RL	ADI	获取价格	Bidirectional, Zero Drift, Current Sense Amplifier
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