Analog Devices Inc. ADA4098-2BRMZ-RL7

Overview

ADA4098-2BRMZ-RL7 from Analog Devices is a dual-channel, precision, Over-The-Top™ operational amplifier designed for high-voltage, abusive-environment signal conditioning. It delivers ±35 µV max input offset voltage, 1.05 MHz gain bandwidth, 165 µA per channel supply current, and operates from +3 V to +50 V single supply - enabling accurate current sensing in battery monitoring and industrial 4 mA–20 mA transmitters.

For engineers reviewing the ADA4098-2BRMZ-RL7 datasheet, ADA4098-2BRMZ-RL7 pinout, ADA4098-2BRMZ-RL7 application, or ADA4098-2BRMZ-RL7 equivalent, this page provides verified specifications, SOIC_N package layout, robust Over-The-Top™ input behavior up to +70 V beyond −VS, shutdown control timing, and real-world alternatives for high-CMRR, low-drift sensor front-ends.

Technical Context

The ADA4098-2BRMZ-RL7 implements an Over-The-Top™ input stage that extends common-mode range to −VS − 0.1 V to −VS + 70 V, independent of +VS, enabling ground-referenced sensing in high-side current measurement. Its rail-to-rail input and output architecture supports full-swing operation with 126 dB minimum large-signal voltage gain and 120 dB CMRR across the entire common-mode range.

It features dual independent shutdown pins (SHDN1/SHDN2), each with 2.5 µs active-to-shutdown response and 30 µs wake-up latency, plus thermal shutdown at 175°C junction temperature. The device maintains 17 nV/√Hz input voltage noise at 100 Hz and 400 nV_p-p in 0.1 Hz–10 Hz band - critical for precision DC-coupled amplification.

Key Specifications

Pinout & Package

ADA4098-2BRMZ-RL7 is packaged in an 8-lead standard small outline (SOIC_N) with exposed pad (EPAD) connected to −VS for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Compared with LT6015IMS8#PBF and OPA2189IDR, ADA4098-2BRMZ-RL7 uniquely combines dual-channel integration, 70 V Over-The-Top™ input tolerance, and sub-200 µA quiescent current - making it the only option for compact, high-voltage, low-power sensor front-ends requiring two matched amplifiers.

Availability

ADA4098-2BRMZ-RL7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, battery monitoring, and 4 mA–20 mA transmitter designs requiring stable component supply across extended temperature and voltage ranges.

Supply support for ADA4098-2BRMZ-RL7 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.

The ADA4098-2BRMZ-RL7 belongs to Analog Devices' Over-The-Top™ precision op amp family, engineered specifically for ruggedized signal acquisition in harsh environments where input overvoltage, wide supply range, and long-term dc accuracy are critical.

FAQ

What is the maximum common-mode input voltage for ADA4098-2BRMZ-RL7?

The ADA4098-2BRMZ-RL7 supports a guaranteed common-mode input range of −VS − 0.1 V to −VS + 70 V. This means when −VS = 0 V (single-supply ground), inputs can safely reach +70 V - enabling direct high-side current sensing on 48 V buses without attenuation. The specification holds across −40°C to +125°C and is validated by CMRR testing per datasheet Table 1.

Does ADA4098-2BRMZ-RL7 support rail-to-rail output swing?

Yes, ADA4098-2BRMZ-RL7 provides true rail-to-rail output swing. With no load, it achieves 20 mV from −VS and 2.5 mV from +VS. Under 10 mA source/sink load, output swing degrades to 900 mV below +VS and 435 mV above −VS - sufficient for driving ADC references or low-dropout regulators directly. This behavior is confirmed in both 5 V and ±15 V supply test conditions.

How does the shutdown function work on ADA4098-2BRMZ-RL7?

ADA4098-2BRMZ-RL7 has two independent shutdown pins: SHDN1 (Pin 5) and SHDN2 (Pin 6). Each enters shutdown when pulled >−VS + 1.5 V, reducing supply current to ≤20 µA per channel. Active state requires V_SHDN < −VS + 0.5 V. Response time is 2.5 µs (active→shutdown) and 30 µs (shutdown→active), as measured in datasheet Table 1 and Figure 9.

Is ADA4098-2BRMZ-RL7 suitable for automotive under-hood applications?

Yes - ADA4098-2BRMZ-RL7 is qualified for operation from −40°C to +125°C (B grade) and features ±3 kV HBM ESD rating, −20 V to +80 V survival input voltage range, and thermal shutdown at 175°C. Its Over-The-Top™ input stage tolerates load-dump transients and reverse-battery conditions common in 12 V/24 V automotive systems, as documented in Absolute Maximum Ratings and Applications sections.

What package type is used for ADA4098-2BRMZ-RL7?

ADA4098-2BRMZ-RL7 uses an 8-lead standard small outline integrated circuit (SOIC_N) package, also referred to as R-8 in Analog Devices' ordering guide. It includes an exposed pad (EPAD) that must be soldered to −VS for optimal thermal performance and noise immunity. Thermal resistance θ_JA is 120°C/W on a JEDEC 4-layer board, per Table 4.