Analog Devices Inc. AD8213WYRMZ-R7

Overview

AD8213WYRMZ-R7 from Analog Devices is a dual-channel, high-voltage current shunt monitor with fixed 20 V/V gain, ±0.5% max gain error over −40°C to +125°C, −2 V to +65 V common-mode input range, and buffered rail-to-rail output compatible with 5 V ADCs. It enables precision high-side current sensing in automotive motor controls and diesel injection systems.

For engineers reviewing the AD8213WYRMZ-R7 datasheet, AD8213WYRMZ-R7 pinout, AD8213WYRMZ-R7 application, or AD8213WYRMZ-R7 equivalent, key selection criteria include guaranteed automotive qualification (AEC-Q100), dual-channel independence, integrated low-pass filter pins (CF1/CF2), and survival up to +68 V common-mode voltage without latch-up.

Technical Context

The AD8213WYRMZ-R7 implements two independent, matched current-sense amplifiers with proprietary offset circuitry and precision-trimmed 20 kΩ internal filter resistors. Each channel features a fixed +20 V/V gain stage followed by a unity-gain output buffer, enabling direct interface with SAR or sigma-delta ADCs.

Its input stage maintains linearity across 0 mV–250 mV differential input and −2 V to +65 V common-mode voltage, with CMRR ≥100 dB at dc for VCM > 5 V. The CF1/CF2 pins allow external capacitor-based low-pass filtering before amplification, preserving signal integrity without gain or CMRR degradation.

Key Specifications

Pinout & Package

AD8213WYRMZ-R7 is housed in a 10-lead MSOP (RM-10) package with 0.5 mm pitch, 3.0 mm × 3.0 mm body, and exposed pad for thermal performance. Pin 1 is marked with a dot; device orientation follows JEDEC MO-187-BA standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX40056ATA+T and INA240A1QPWRQ1, AD8213WYRMZ-R7 uniquely delivers dual-channel independence with dedicated CF pins for pre-amplification filtering-critical for correlated noise rejection in multi-actuator automotive subsystems-while maintaining AEC-Q100 compliance and guaranteed ±0.5% gain accuracy over temperature.

Availability

AD8213WYRMZ-R7 is available at Aetrix Electronics and suitable for automotive motor controls, diesel injection systems, and engine management applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for AD8213WYRMZ-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 AD8213 product line delivers precision current sensing for safety-critical automotive subsystems, emphasizing robustness across extreme V_CM, temperature, and ESD stress-designed specifically for engine, transmission, and chassis control units.

FAQ

What is the maximum common-mode voltage the AD8213WYRMZ-R7 can survive without damage?

The AD8213WYRMZ-R7 has an absolute maximum continuous input voltage rating of −3 V to +68 V, meaning it survives transient overvoltages up to +68 V on either input pin relative to GND. This exceeds typical ISO 7637-2 load-dump pulses and ensures reliability in 24 V commercial vehicle systems. Operation above +65 V is not recommended for sustained use.

Does the AD8213WYRMZ-R7 support bidirectional current sensing?

Yes, the AD8213WYRMZ-R7 supports bidirectional current sensing by configuring one channel (e.g., Channel 1) for load current and the other (Channel 2) for charge current across a shared shunt resistor. Figure 31 in the datasheet shows this configuration, where differential polarity reversal at the inputs produces corresponding output polarity shifts-enabling charge/discharge monitoring in battery management systems.

How does the CF1 and CF2 pin function in the AD8213WYRMZ-R7?

The CF1 and CF2 pins connect to internal 20 kΩ precision-trimmed resistors that form first-order low-pass filters with external capacitors to GND. This placement before the gain stage prevents noise amplification, yielding cleaner outputs without degrading CMRR or gain accuracy. For example, a 100 pF capacitor sets f_c ≈ 80 kHz, ideal for suppressing PWM switching noise in motor drives.

Is the AD8213WYRMZ-R7 pin-compatible with other AD8213 variants?

Yes, all AD8213 variants-including AD8213YRMZ-R7, AD8213WYRMZ-R7, and AD8213WHRMZ-R7-share identical 10-lead MSOP (RM-10) pinout and electrical interface. The W suffix denotes automotive qualification (AEC-Q100), and Y/H denote temperature grades; no PCB layout changes are needed when upgrading from commercial to automotive grade.

What is the output voltage range of the AD8213WYRMZ-R7 at 5 V supply?

At V+ = 5 V, the AD8213WYRMZ-R7 delivers an output voltage range of 0.05 V to 4.9 V (typical) for each channel, with guaranteed minimums of 0.1 V low and 4.95 V high. This rail-to-rail capability ensures full utilization of 5 V ADC reference ranges, minimizing quantization error in 12-bit or higher converters used in automotive ECUs.