AD8418 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8418
Manufacturer

ADI
ChipWorker Part#

CW265267559
Description

Bidirectional, Zero-Drift, Current Sense Amplifier
Documentation

Datasheet

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AD8418 Specifications

Attribute	Attribute Value

Part Number	AD8418
Manufacturer	ADI
ChipWorker Part#	CW265267559
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The AD8418 is a high voltage, high resolution current shunt amplifier. It features an initial gain of 20 V/V, with a maximum ±0.15% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8418 offers excellent input common-mode rejection from −2 V to +70 V. The AD8418 performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, battery management, and solenoid control.
The AD8418 offers breakthrough performance throughout the −40°C to +125°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 AD8418 is fully qualified for automotive applications and 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 ±200 μV. The AD8418 is offered in 8-lead MSOP and SOIC packages.
**Applications**
High-side current sensing in
Motor controls
Solenoid controls
Power management
Low-side current sensing
Diagnostic protection
### Features and Benefits
Typical 0.1 μV/°C offset drift
Maximum ±400 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 operating
−4 V to +85 V survival
Initial gain = 20 V/V
Wide operating temperature range:
−40°C to +125°C
Bidirectional operation
Available in 8-lead SOIC and 8-lead MSOP
Common-mode rejection ratio (CMRR): 86 dB, dc to 10 kHz
Qualified for automotive applications

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