Analog Devices Inc. AD8202WYRMZ-RL

Overview

AD8202WYRMZ-RL from Analog Devices is a high common-mode voltage, single-supply difference amplifier designed for precision current sensing in automotive power rails. It delivers 20× system gain, ±2 mV initial input offset (RTI), 80 dB minimum CMRR from dc to 10 kHz, and operates from −6 V to +28 V common-mode range at 5 V supply - enabling direct shunt-based sensing in 12 V battery systems with reverse-battery protection.

For engineers reviewing the AD8202WYRMZ-RL datasheet, AD8202WYRMZ-RL pinout, AD8202WYRMZ-RL application, or AD8202WYRMZ-RL equivalent, this page provides verified functional context, validated pin-level circuit roles, confirmed automotive-grade temperature performance (−40°C to +125°C), and real-world current-sensing design implications - not generic amplifier generalities.

Technical Context

The AD8202WYRMZ-RL implements a two-stage architecture: a dynamic bridge preamplifier (A1) with ×10 gain and 100 kΩ output impedance, followed by a ×2 buffer (A2) with 2 Ω output resistance. Its input network attenuates both differential and common-mode signals to extend CMV range beyond supply rails while maintaining matched resistor ratios for high accuracy.

CMRR is maintained via active common-mode compensation using amplifier A3 and trimmed RCM resistors, enabling stable rejection across −6 V to +28 V CMV. The externally accessible 100 kΩ node between A1 and A2 supports configurable low-pass filtering and gain adjustment without degrading bandwidth or introducing significant offset error.

Key Specifications

Pinout & Package

Rounded Mini Small Outline Package (RMSP / MSOP-8), 3 mm × 3 mm, 0.65 mm pitch, exposed pad for thermal dissipation - optimized for high-density automotive PCB layouts and thermally demanding engine bay environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA199A1DCKR and MAX4080TASA+, the AD8202WYRMZ-RL uniquely balances automotive temperature robustness, configurable filtering via its A1 output node, and proven reliability in safety-critical drivetrain subsystems - making it the preferred choice for transmission and diesel injection control where long-term drift and transient resilience are non-negotiable.

Availability

AD8202WYRMZ-RL is available at Aetrix Electronics and suitable for transmission control, diesel injection control, and adaptive suspension control requiring stable component supply across multi-year automotive production cycles.

Supply support for AD8202WYRMZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with deep expertise in precision signal conditioning for harsh environments.

The AD8202 product line was engineered specifically for automotive current sensing - delivering extended common-mode range, AEC-Q100 qualification, and robust performance in engine, transmission, and chassis control units where reliability and accuracy are mission-critical.

FAQ

What is the maximum continuous common-mode voltage the AD8202WYRMZ-RL can withstand?

The AD8202WYRMZ-RL supports a continuous common-mode voltage range of −6 V to +28 V at a 5 V supply voltage. Absolute maximum ratings allow transient input voltage up to 44 V for 400 ms, and continuous input voltage up to 35 V - making it suitable for automotive battery monitoring during load dump events. This specification is validated across the full −40°C to +125°C operating temperature range.

Can the AD8202WYRMZ-RL be used with a 3.3 V supply?

Yes, the AD8202WYRMZ-RL operates from 3.5 V to 12 V, so a 3.3 V supply is below the minimum rated voltage and not supported. At 3.5 V, the output voltage range is specified as 0.04 V to 4.8 V, and CMV range shrinks slightly versus 5 V operation. For 3.3 V systems, consider the AD8203 or INA199 series, which are explicitly characterized down to 2.7 V.

How does the 100 kΩ resistor between A1 and A2 affect gain configuration in the AD8202WYRMZ-RL?

The 100 kΩ resistor at Pin 3 (A1 output) enables external gain adjustment: connecting a resistor from Pin 3/Pin 4 to GND reduces overall gain (e.g., 100 kΩ yields ×10), while connecting from OUT to A2+ increases gain (e.g., 200 kΩ yields ×40). This node also supports 1-pole or 2-pole low-pass filtering without affecting A1 stability - a key differentiator from monolithic current-sense amplifiers.

Is the AD8202WYRMZ-RL pin-compatible with other members of the AD8202 family?

Yes, AD8202WYRMZ-RL shares identical MSOP-8 pinout and electrical behavior with AD8202WYRZ and AD8202ARMZ. All variants use the same die and functional block diagram; differences are limited to packaging (RMSP vs. SOIC), tape-and-reel formatting (RL suffix), and qualification grade (WY = automotive). No PCB redesign is needed when substituting within the AD8202 family.

What is the typical input bias current at the A2 stage of the AD8202WYRMZ-RL, and how does it impact accuracy?

The AD8202WYRMZ-RL has a typical A2 input bias current of 40 nA. When combined with the 100 kΩ A1 output impedance, this generates up to 4 mV of offset at the A2 input - contributing ~48 mV total system output error at low end. This is factored into the specified 0.04 V minimum output voltage. Layout best practices (short traces, guard rings) minimize additional error from leakage paths.