Analog Devices Inc. AD8410AWBRZ

Overview

AD8410AWBRZ from Analog Devices is a high-voltage, high-bandwidth current-sense amplifier designed for precision bidirectional shunt-based current measurement in harsh PWM environments. It delivers 20 V/V fixed gain, 2.2 MHz small-signal bandwidth, −2 V to +70 V continuous common-mode input range, ±200 µV max input offset over temperature, and AEC-Q100 qualification for automotive use - enabling accurate motor phase current sensing in BLDC inverters.

For engineers reviewing the AD8410AWBRZ datasheet, AD8410AWBRZ pinout, AD8410AWBRZ application, or AD8410AWBRZ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.

Technical Context

The AD8410AWBRZ employs a proprietary DigiTrim™ in-package trim core architecture that achieves ±0.21 µV/°C typical offset drift without chopping or autozero circuitry - eliminating intermodulation artifacts in PWM-rich systems. Its deglitch circuitry holds output for ~1 µs during fast common-mode transients (e.g., 1 V/ns), preserving accuracy during gate-drive switching edges.

It supports ratiometric offset adjustment via dual VREF pins tied through internal 60 kΩ resistors, enabling flexible unidirectional or bidirectional operation across 2.9 V to 5.5 V supply. DC CMRR is ≥123 dB from −2 V to +70 V, and AC CMRR remains 96 dB at 50 kHz - critical for rejecting noise in high-frequency DC-DC converters and solenoid drivers.

Key Specifications

Pinout & Package

AD8410AWBRZ is housed in an 8-lead SOIC_N (R-8) package with exposed pad (not electrically connected). This thermally enhanced package supports up to 10.8 mA quiescent current dissipation under full operating conditions while maintaining junction temperatures within specification.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with MAX40056AUB+T and INA240A1D, the AD8410AWBRZ uniquely combines AEC-Q100 qualification, 2.2 MHz bandwidth, and active PWM rejection - making it the only choice for automotive BLDC inverters requiring simultaneous high speed, high common-mode tolerance, and functional safety compliance.

Availability

AD8410AWBRZ is available at Aetrix Electronics and suitable for automotive motor control, bidirectional DC-DC conversion, and solenoid actuation applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD8410AWBRZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The AD8410A product line was engineered specifically for high-accuracy, high-speed current sensing in automotive and industrial power systems - emphasizing PWM rejection, wide common-mode operation, and AEC-Q100 reliability.

FAQ

What is the maximum continuous common-mode voltage the AD8410AWBRZ can withstand?

The AD8410AWBRZ supports −2 V to +70 V continuous common-mode input voltage operation, with survival capability up to −20 V to +85 V. This enables direct high-side sensing on 48 V automotive battery rails and industrial 60 V bus systems without external protection or attenuation networks. The AD8410AWBRZ maintains full specified performance across its entire −40°C to +125°C operating temperature range under these conditions.

Does the AD8410AWBRZ require external zero-drift correction circuitry?

No, the AD8410AWBRZ does not require external zero-drift correction. Its in-package DigiTrim™ architecture delivers ±0.21 µV/°C typical offset drift and ±200 µV maximum offset over temperature - eliminating the need for chopper or autozero techniques that introduce intermodulation artifacts. This inherent stability makes the AD8410AWBRZ suitable for high-fidelity current measurement in closed-loop motor control where spectral purity is critical.

How does the AD8410AWBRZ handle PWM-induced common-mode transients?

When subjected to fast PWM common-mode transients (e.g., 1 V/ns), the AD8410AWBRZ activates internal deglitch circuitry that holds its output at the last valid value for approximately 1 µs. This prevents erroneous output spikes during gate-driver switching edges, ensuring clean current waveforms for FOC algorithms. After the deglitch interval, the output settles accurately based solely on the differential voltage across the shunt - a behavior validated in Figures 10 and 11 of the AD8410AWBRZ datasheet.

Can the AD8410AWBRZ be used for bidirectional current measurement?

Yes, the AD8410AWBRZ supports true bidirectional current sensing via configurable offset adjustment using its dual VREF pins. By applying appropriate reference voltages to VREF1 and VREF2, the output can be centered at mid-supply (e.g., 2.5 V with 5 V VS), allowing positive and negative differential inputs to produce corresponding above- and below-midpoint outputs. This capability is essential for regenerative braking circuits and bidirectional DC-DC converters where current direction determines power flow.

What package type is used for the AD8410AWBRZ and what are its thermal characteristics?

The AD8410AWBRZ uses an 8-lead SOIC_N (R-8) package with θJA = 142.8°C/W under JEDEC JESD-51-2 test conditions. Its exposed pad (though not electrically connected) enhances thermal conduction to the PCB. At maximum 10.8 mA quiescent current and 5 V supply, power dissipation remains below 54 mW - enabling reliable operation in compact automotive ECUs without forced airflow, provided minimum copper pour guidelines are followed per Analog Devices' layout recommendations.