Analog Devices Inc. AD8417WBRZ-RL

Overview

AD8417WBRZ-RL from Analog Devices is a bidirectional, zero-drift current sense amplifier optimized for high-side and low-side shunt-based current measurement in automotive motor and solenoid control systems. It delivers 60 V/V fixed gain, ±400 µV max input offset over −40°C to +125°C, −2 V to +70 V continuous common-mode input range, and 250 kHz bandwidth - enabling accurate real-time current monitoring under PWM-rich conditions.

For engineers reviewing the AD8417WBRZ-RL datasheet, AD8417WBRZ-RL pinout, AD8417WBRZ-RL application, or AD8417WBRZ-RL equivalent, key selection considerations include AEC-Q100 qualification, FMEA-tolerant 10-lead MSOP option, EMI-filtered inputs, ratiometric output offset adjustment, and survival capability up to −3 V to +80 V common-mode voltage.

Technical Context

The AD8417WBRZ-RL implements a patented zero-drift difference amplifier architecture (U.S. Patent 8,624,668 B2) that maintains <0.4 µV/°C offset drift while delivering 250 kHz small-signal bandwidth - eliminating trade-offs between precision and speed. Its input stage rejects fast PWM common-mode transients up to 1 V/ns without degradation.

It supports flexible unidirectional or bidirectional operation via dual reference pins (VREF1/VREF2), enabling ground-referenced, supply-referenced, external-referenced, or ratiometric mid-scale output configurations - all with 0.5 V/V or 1 V/V reference-to-output gain depending on connection topology.

Key Specifications

Pinout & Package

AD8417WBRZ-RL is supplied in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with pin 1 marked by notch or bevel. The device uses the standard 8-lead SOIC_N pinout shared across AD8417WB variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8417WBRZ-RL, AD8418ARZ trades gain for improved offset and noise performance, while MAX40056ATA+T adds transient hardening at the cost of adjustable output offset - making AD8417WBRZ-RL optimal where precise bidirectional centering and PWM rejection are primary.

Availability

AD8417WBRZ-RL is available at Aetrix Electronics and suitable for automotive motor control, solenoid actuation, and battery management systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for AD8417WBRZ-RL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.

The AD8417WBRZ-RL belongs to Analog Devices' precision current sense amplifier product line, engineered specifically for demanding automotive applications requiring AEC-Q100 qualification, zero-drift stability, and robust PWM common-mode rejection.

FAQ

What is the operating temperature range for the AD8417WBRZ-RL?

The AD8417WBRZ-RL is rated for −40°C to +125°C operation, meeting AEC-Q100 Grade 1 requirements. This range is validated across all electrical specifications including gain error, offset voltage, and CMRR - ensuring reliable performance in under-hood automotive environments where ambient temperatures exceed 105°C.

Does the AD8417WBRZ-RL support bidirectional current sensing?

Yes, the AD8417WBRZ-RL supports true bidirectional current sensing via its dual reference inputs (VREF1 and VREF2). By applying appropriate voltages - such as tying one to VS and the other to GND - the output can be centered at VS/2, enabling symmetric measurement of current flow in either direction across the shunt resistor.

What package type is used for the AD8417WBRZ-RL?

The AD8417WBRZ-RL uses an 8-lead SOIC_N (R-8) package compliant with JEDEC MS-012-AA. Its dimensions are 5.00 mm × 4.00 mm × 1.50 mm, with gull-wing leads spaced at 1.27 mm pitch - optimized for automated assembly and thermal performance in automotive PCB layouts.

How does the AD8417WBRZ-RL handle PWM common-mode interference?

The AD8417WBRZ-RL incorporates patented circuitry (U.S. Patent 8,624,668 B2) that actively cancels fast common-mode transients up to 1 V/ns. This enables accurate current measurement even when the shunt sits directly across a MOSFET half-bridge switching at high frequency - a capability confirmed by 86 dB CMRR maintained from dc to 10 kHz.

Is the AD8417WBRZ-RL pin-compatible with other members of the AD8417 family?

Yes, the AD8417WBRZ-RL shares the identical 8-lead SOIC_N pinout with AD8417WB variants (e.g., AD8417WBRZ-R7) and AD8417B. However, it is not pin-compatible with the 10-lead MSOP FMEA variant (AD8417WHYRMZ-RL), which inserts NC pins between critical terminals for fault tolerance.