Analog Devices Inc. AD8213WHRMZ-R7

Overview

AD8213WHRMZ-R7 from Analog Devices is a dual-channel, high-voltage current shunt monitor optimized for automotive-grade high-side current sensing. 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 (0.15 V to 4.88 V), and operates from −40°C to +150°C. It enables precise unidirectional current measurement in engine management and transmission control systems using a single shunt resistor.

For engineers reviewing the AD8213WHRMZ-R7 datasheet, AD8213WHRMZ-R7 pinout, AD8213WHRMZ-R7 application, or AD8213WHRMZ-R7 equivalent, key selection criteria include its AEC-Q100-qualified H-grade temperature performance, dual-channel independence, integrated low-pass filter pins (CF1/CF2), and survival rating up to +68 V common-mode voltage - critical for 12 V/24 V automotive power domains.

Technical Context

The AD8213WHRMZ-R7 implements two independent precision instrumentation amplifier channels, each with proprietary offset circuitry and a fixed 20 V/V gain set by laser-trimmed internal resistors (0.01% matching). Its input stage maintains linearity across 0 mV–250 mV differential input at any common-mode voltage from −2 V to +65 V, enabling accurate current sensing even during PWM switching transients.

Each channel features dedicated CFx pins connected to internal 20 kΩ precision resistors, allowing external capacitors to implement noise-rejecting low-pass filtering before amplification - preserving CMRR and avoiding gain error. The buffered outputs drive 25 kΩ loads directly into ADCs without external buffering, with 500 kHz small-signal bandwidth and 4.5 V/µs slew rate (no CF).

Key Specifications

Pinout & Package

AD8213WHRMZ-R7 is housed in a 10-lead MSOP (RM-10) package, 3.0 mm × 3.0 mm × 1.1 mm, compliant with JEDEC MO-187-BA. Pin 1 identifier located at top-left corner; exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8213WHRMZ-R7, AD8210WYRZ-R7 offers bidirectional sensing at the cost of channel count and filter flexibility, while INA240A1QPWRQ1 trades temperature robustness and integrated filtering for lower unit cost in less demanding thermal environments.

Availability

AD8213WHRMZ-R7 is available at Aetrix Electronics and suitable for engine management, transmission control, and diesel injection systems requiring stable component supply across automotive production lifecycles.

Supply support for AD8213WHRMZ-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 automotive safety-critical systems, with design emphasis on high common-mode rejection, extended temperature operation, and functional safety readiness (ISO 26262 support).

FAQ

What is the maximum common-mode voltage the AD8213WHRMZ-R7 can withstand continuously?

The AD8213WHRMZ-R7 supports a continuous common-mode input voltage range of −2 V to +65 V. Its survival rating extends to −3 V to +68 V, making it suitable for automotive battery-connected applications subject to load-dump transients. This specification is validated across the full −40°C to +150°C operating temperature range and does not degrade with temperature.

Does the AD8213WHRMZ-R7 require external components for basic operation?

No, the AD8213WHRMZ-R7 operates with only power supply decoupling (0.1 µF ceramic capacitor from V+ to GND) and shunt resistor connections. External components are optional: capacitors from CF1/CF2 to GND add low-pass filtering, and no series resistors are needed at inputs due to its high input impedance (5 kΩ differential, 5 MΩ common-mode above 5 V).

How does the AD8213WHRMZ-R7 maintain accuracy during PWM switching events?

The AD8213WHRMZ-R7 maintains linearity across its full 0 mV–250 mV differential input range regardless of common-mode voltage, including during rapid transitions. Its proprietary input stage ensures <0.1% total output error at 2 mV input even at VCM = 0 V, and differential overload recovery time is <1 µs - critical for accurate current capture in PWM-driven solenoids and injectors.

Is the AD8213WHRMZ-R7 pin-compatible with other AD8213 variants?

Yes, all AD8213 variants (Y, WY, WH grades) share identical 10-lead MSOP (RM-10) pinout and electrical interface. The AD8213WHRMZ-R7 differs only in temperature rating (−40°C to +150°C) and automotive qualification - allowing drop-in replacement in designs requiring extended thermal performance without PCB changes.

What is the purpose of the CF1 and CF2 pins on the AD8213WHRMZ-R7?

The CF1 and CF2 pins connect to internal 20 kΩ precision resistors, enabling external capacitors to ground that form first-order low-pass filters before amplification. This configuration rejects differential and common-mode noise without degrading gain accuracy or CMRR - unlike post-amplifier filtering - and supports independent bandwidth tuning per channel (e.g., 10 kHz for motor control, 100 kHz for injector sensing).