AD8418AWBRMZ

Instrumentation, Op Amps, Buffer Amps Overview

The AD8418AWBRMZ is a high voltage, high resolution current shunt amplifier featuring an initial gain of 20 V/V and a maximum gain error of ±0.15% over the temperature range. It operates with a supply voltage between 2.7 V and 5.5 V, supporting bidirectional current measurements. The device provides a continuous common-mode input voltage range from −2 V to +70 V, with a survival range extending to −3 V or +80 V. It includes integrated EMI filters and exhibits a typical offset drift of 0.1 μV/°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero drift architecture ensures low offset voltage and minimal drift across operating temperatures.
• Integrated electromagnetic interference (EMI) filters enable accurate output with PWM type input common-mode voltages.
• High common-mode input voltage range supports continuous operation up to +70 V.
• FMEA tolerant pinout option available for automotive applications.

Instrumentation, Op Amps, Buffer Amps Applications

• Motor controls
• Solenoid controls
• Power management
• Low-side current sensing
• Diagnostic protection

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'WB' indicates the 8-lead MSOP package variant when ordering. Confirm that the AW designation aligns with the required -40°C to +125°C operating temperature range for your application environment. Ensure compatibility with AEC-Q100 qualification standards if deploying in automotive systems. Cross-reference the datasheet revision to confirm parameter stability.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring precise bidirectional current sensing in high common-mode voltage environments. The 20 V/V gain and 250 kHz bandwidth suit motor control and solenoid drive circuits. Consider the FMEA tolerant pinout if system reliability against PCB defects is critical. Verify power supply constraints fit within the 2.7 V to 5.5 V operational window.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD8418A series comprises high-voltage current sense amplifiers designed for automotive and industrial use. The AD8418AWBRMZ specifically denotes the wide temperature grade packaged in an 8-lead MSOP. It belongs to a family including variants like the AD8417 and AD8418AWH, differentiated by gain, temperature range, and package type.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The AD8418AB serves as a direct replacement within the same package and electrical specification profile. Other members of the AD8418A family may require verification of gain accuracy and temperature range alignment before substitution.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the AD8418AWBRMZ handle PWM input common-mode voltages?

The device includes proprietary circuitry and integrated EMI filters to maintain output accuracy despite rapidly changing PWM common-mode voltages.

What is the purpose of the FMEA tolerant pinout option?

It isolates high-voltage input pins from adjacent pins using No Connect (NC) pads to prevent unrecoverable faults caused by single PCB defects like shorts or opens.