Analog Devices Inc. AD8213WHRMZ

Overview

AD8213WHRMZ from Analog Devices is a dual-channel, high-voltage current shunt monitor designed for precision unidirectional current sensing in automotive powertrain and safety-critical systems. It delivers fixed 20 V/V gain with ±0.5% max gain error over temperature, −2 V to +65 V common-mode input range, buffered rail-to-rail output, and operates from −40°C to +150°C. It enables accurate high-side current measurement in diesel injection controls and engine management.

For engineers reviewing the AD8213WHRMZ datasheet, AD8213WHRMZ pinout, AD8213WHRMZ application, or AD8213WHRMZ equivalent, this page provides verified technical context, validated pin functions, real-world automotive use cases, and confirmed alternative options for high-temperature current sensing designs.

Technical Context

The AD8213WHRMZ integrates two independent current sense amplifiers, each with proprietary offset circuitry and a precision-trimmed 20 kΩ internal filter resistor. Its input stage maintains linearity across 0 mV–250 mV differential input voltage regardless of common-mode voltage (−2 V to +65 V), enabling reliable operation during PWM switching transients.

Each channel features dedicated CF pins for external capacitor-based low-pass filtering prior to amplification-preserving CMRR and avoiding gain error-while the buffered outputs drive ADCs directly without external buffering. The device uses matched internal resistors trimmed to 0.01% for stable 20 V/V gain.

Key Specifications

Pinout & Package

AD8213WHRMZ is housed in a 10-lead MSOP (RM-10) package with exposed pad for thermal performance in under-hood automotive environments. Pin spacing is 0.5 mm, body dimensions 3.0 mm × 3.0 mm × 1.1 mm max.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX40056AUB+T and INA240A1QDRQ1, AD8213WHRMZ uniquely combines dual-channel integration, +150°C operation, and guaranteed 20 V/V gain accuracy in a single MSOP package-reducing board space and interconnect complexity in compact ECU modules.

Availability

AD8213WHRMZ is available at Aetrix Electronics and suitable for diesel injection controls, engine management systems, transmission control units, and vehicle dynamic control applications requiring stable component supply across extended temperature and automotive lifecycle demands.

Supply support for AD8213WHRMZ 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 AD8213 product line delivers precision current sensing for automotive powertrain and chassis systems, engineered specifically to meet AEC-Q100 Grade 0/1 requirements and support functional safety goals in ASIL-B/C architectures.

FAQ

What is the maximum common-mode voltage the AD8213WHRMZ can withstand continuously?

The AD8213WHRMZ supports a continuous common-mode input voltage range of −2 V to +65 V. Its absolute maximum survival rating extends to −3 V to +68 V, making it suitable for automotive battery rails subject to load dump transients. This specification is validated across the full −40°C to +150°C operating temperature range specified for the AD8213WHRMZ grade.

Does the AD8213WHRMZ require external resistors for gain setting?

No, the AD8213WHRMZ has a fixed, factory-trimmed gain of 20 V/V achieved using precision internal resistors matched to 0.01%. No external gain-setting components are needed, eliminating drift and tolerance errors associated with discrete resistor networks. This internal architecture ensures the ±0.5% max gain error over temperature is maintained without user calibration.

How does the CF1 and CF2 pin function in the AD8213WHRMZ?

The CF1 and CF2 pins connect to internal 20 kΩ precision resistors that form the first stage of a low-pass filter. Adding an external capacitor from CF1 or CF2 to GND creates a 1st-order RC filter with corner frequency f_C = 1/(2π × 20 kΩ × C). This filtering occurs before amplification, preventing noise amplification while preserving CMRR and gain accuracy-critical for PWM-rich motor control environments.

Is the AD8213WHRMZ pin-compatible with other AD8213 variants like AD8213YRMZ?

Yes, the AD8213WHRMZ shares identical pinout, footprint, and electrical interface with all AD8213 variants (e.g., AD8213YRMZ, AD8213WYRMZ) in the 10-lead MSOP package. The only differences are temperature grade (−40°C to +150°C vs. +125°C) and automotive qualification (AEC-Q100 compliant). PCB designs using any AD8213 variant can substitute AD8213WHRMZ without layout changes.

What is the output voltage range of the AD8213WHRMZ at +150°C?

At +150°C, the AD8213WHRMZ guarantees an output voltage range of 0.15 V to 4.88 V with a 5 V supply. This rail-to-rail capability ensures compatibility with standard 12-bit SAR ADCs used in automotive ECUs. The lower limit (0.15 V) accommodates minimum detectable shunt voltages, while the upper limit (4.88 V) provides 120 mV headroom for supply tolerance and noise margin.