Analog Devices Inc. AD8417-2ACBZ-R7

Overview

AD8417-2ACBZ-R7 from Analog Devices is a dual-channel, high common-mode, zero-drift current sense amplifier in a 10-ball WLCSP (1 mm × 1.9 mm). It delivers 60 V/V initial gain, ±400 µV max input offset over −40°C to +125°C, and operates from 2.7 V to 5.5 V supply. Designed for bidirectional shunt-based current measurement in motor phase legs and solenoid drivers where PWM rejection and thermal stability are critical.

For engineers reviewing the AD8417-2ACBZ-R7 datasheet, AD8417-2ACBZ-R7 pinout, AD8417-2ACBZ-R7 application, or AD8417-2ACBZ-R7 equivalent, this page provides verified specifications, validated dual-channel pin mapping, real-world motor/solenoid use cases, and two confirmed alternative parts with documented functional trade-offs.

Technical Context

The AD8417-2ACBZ-R7 implements a patented zero-drift difference amplifier architecture (U.S. Patent 8,624,668 B2) enabling <0.4 µV/°C offset drift and 250 kHz bandwidth without sacrificing DC accuracy. Its input stage rejects fast-changing common-mode voltages up to 1 V/ns - essential for accurate sensing during PWM switching in H-bridge and 3-phase inverters.

It supports flexible output offset configuration via VREF1/VREF2 pins: split-supply (VS/GND) yields ratiometric mid-scale bias; external reference yields precise unidirectional/bidirectional centering. CMRR is 86 dB from dc to 10 kHz, and input common-mode range spans −2 V to +42 V continuously.

Key Specifications

Pinout & Package

AD8417-2ACBZ-R7 uses a 10-ball Wafer Level Chip Scale Package (WLCSP), CB-10-2 footprint, 1 mm × 1.9 mm body size, solder-bumped die with bottom-side interconnect. Package supports fine-pitch PCB routing and single-layer layout in space-constrained motor control modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8417-2ACBZ-R7, AD8418A trades dual-channel capability and 250 kHz bandwidth for lower gain and reduced channel density, while AD8210 sacrifices WLCSP miniaturization, EMI robustness, and zero-drift stability for SOIC compatibility and simpler layout - neither offers pin-compatible replacement.

Availability

AD8417-2ACBZ-R7 is available at Aetrix Electronics and suitable for motor control, solenoid actuation, and power management systems requiring stable component supply, high-temperature operation (−40°C to +125°C), and compact WLCSP packaging.

Supply support for AD8417-2ACBZ-R7 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 industrial, automotive, communications, and healthcare markets since 1965.

The AD8417-2ACBZ-R7 belongs to Analog Devices' precision current sense amplifier product line, engineered specifically for high-accuracy, high-CMRR, and thermally stable current monitoring in motor drives and electro-mechanical control systems.

FAQ

What is the maximum continuous common-mode voltage the AD8417-2ACBZ-R7 supports?

The AD8417-2ACBZ-R7 supports a continuous common-mode input voltage range of −2 V to +42 V. This allows reliable high-side current sensing in 12 V, 24 V, and 48 V battery systems, including transient conditions such as load dump or clamp diode recovery. The device survives up to +46 V on either input pin per absolute maximum ratings, but sustained operation above +42 V is not specified.

How does the AD8417-2ACBZ-R7 achieve bidirectional current measurement?

The AD8417-2ACBZ-R7 achieves bidirectional current measurement by configuring its output offset via the VREF1 and VREF2 pins. When these pins are biased to mid-supply (e.g., VREF1 = VS, VREF2 = GND), the output centers at VS/2. Positive differential input shifts OUTA/OUTB above mid-scale; negative differential input shifts them below - enabling full-scale measurement in both directions without external level-shifting circuitry.

Can the AD8417-2ACBZ-R7 replace two separate single-channel current sense amplifiers?

Yes - the AD8417-2ACBZ-R7 integrates two fully independent current sense channels in one 1 mm × 1.9 mm WLCSP, eliminating the need for two discrete devices. Each channel has dedicated inputs (+INA/−INA, +INB/−INB) and outputs (OUTA/OUTB), with matched gain (60 V/V) and offset performance. This reduces PCB area, component count, and inter-channel thermal mismatch compared to dual single-channel solutions.

What is the purpose of the EMI filters integrated into the AD8417-2ACBZ-R7?

The integrated EMI filters in the AD8417-2ACBZ-R7 suppress high-frequency electromagnetic interference - particularly from nearby gate drivers and switching power supplies - preventing RF rectification at the input stage. This avoids output saturation or erroneous current readings during fast-switching events like PWM edges, ensuring measurement fidelity in electrically noisy motor control environments.

Does the AD8417-2ACBZ-R7 require external calibration for offset or gain error?

No - the AD8417-2ACBZ-R7 does not require external calibration. It features a factory-trimmed initial gain of 60 V/V with ±0.3% max error over −40°C to +125°C and a zero-drift core delivering ±400 µV max input offset over temperature. These specifications are guaranteed without user calibration, simplifying system design and reducing production test overhead for the AD8417-2ACBZ-R7.