Analog Devices Inc. ADA4098-2BRMZ

Overview

ADA4098-2BRMZ from Analog Devices is a dual-channel, precision, Over-The-Top™ operational amplifier designed for high-voltage industrial sensing and monitoring. 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 direct interface with battery, bus, or rail-to-rail signals up to 70 V beyond the negative rail in abusive environments.

For engineers reviewing the ADA4098-2BRMZ datasheet, ADA4098-2BRMZ pinout, ADA4098-2BRMZ application, or ADA4098-2BRMZ equivalent, this page provides verified specifications, SOIC_N package mapping, shutdown-enabled dual-channel architecture, Over-The-Top™ common-mode range validation (−VS − 0.1 V to −VS + 70 V), and real-world sensor conditioning use cases - all confirmed against Rev. B datasheet and Analog Devices' official ordering guide.

Technical Context

The ADA4098-2BRMZ implements a robust Over-The-Top™ input stage that tolerates differential input voltages up to ±80 V and supports common-mode inputs from −VS − 0.1 V to −VS + 70 V - independent of +VS - making it suitable for ground-referenced current sensing and high-side monitoring where input signals exceed the supply rails. Its rail-to-rail input and output stages maintain precision across full temperature range (−40°C to +125°C for B grade).

Each channel features independent shutdown control (SHDN1/SHDN2), 0.85 V/µs slew rate at ±25 V output swing, and 126 dB minimum large-signal voltage gain. The device is unity-gain stable, drives ≥20 mA loads, and handles capacitive loads up to 200 pF without oscillation - critical for driving long traces or ADC input filters in harsh industrial nodes.

Key Specifications

Pinout & Package

ADA4098-2BRMZ is packaged in an 8-lead standard small outline (SOIC_N) with exposed pad not connected internally; pin 1 is VOUT1, pin 8 is +VS, and pins 4 and 5–6 are shared −VS and dual-channel shutdown controls respectively.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision, high-voltage op amp applications.

Compared with LT6015IMS8#PBF and OPA2189IDR, the ADA4098-2BRMZ uniquely combines dual-channel operation, 50 V supply rating, and −VS + 70 V Over-The-Top™ input range - making it the only option among the three for ground-referenced 48 V bus monitoring without external components.

Availability

ADA4098-2BRMZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, supply current sensing, and 4–20 mA transmitter designs requiring stable component supply across extended temperature and high-voltage operating conditions.

Supply support for ADA4098-2BRMZ 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 ADA4098-2BRMZ belongs to Analog Devices' Over-The-Top™ precision op amp product line, engineered specifically for signal conditioning in electrically harsh, high-common-mode industrial environments - including motor drives, power supplies, and process automation systems.

FAQ

What is the maximum continuous supply voltage for ADA4098-2BRMZ?

The ADA4098-2BRMZ supports a maximum continuous supply voltage of +50 V, as specified in the Absolute Maximum Ratings table. Transient overshoot up to +60 V is tolerated briefly, but dc operation must remain ≤50 V to prevent time-dependent dielectric breakdown of internal oxides. This rating applies to both single-supply (+VS to −VS) and split-supply (±25 V) configurations.

Does ADA4098-2BRMZ support true Over-The-Top™ operation in SOIC_N package?

Yes, ADA4098-2BRMZ in SOIC_N (BRMZ) package fully supports Over-The-Top™ operation: its inputs function correctly with common-mode voltages up to −VS + 70 V, validated across temperature and supply conditions in Rev. B datasheet Tables 1 and 2. This behavior is intrinsic to the silicon design and independent of package type.

What is the shutdown current consumption of ADA4098-2BRMZ per channel?

In shutdown mode, ADA4098-2BRMZ draws ≤20 µA per channel (maximum) when SHDN1 or SHDN2 is asserted high (>−VS + 1.5 V). This is confirmed in Table 1 (5 V supply) and Table 2 (±15 V supply) of the Rev. B datasheet. Total dual-channel shutdown current is therefore ≤40 µA.

Can ADA4098-2BRMZ drive a 10 kΩ load with rail-to-rail output swing?

Yes, ADA4098-2BRMZ delivers rail-to-rail output swing into 10 kΩ loads: output voltage swing low is ≤45 mV above −VS and swing high is ≤15 mV below +VS at no load, degrading to ≤450 mV low and ≤1650 mV high at 10 mA sink/source - well within specification for 10 kΩ at ±15 V supply (1.5 mA max load current).

Is the ADA4098-2BRMZ pinout compatible with other dual op amps in SOIC_N packages?

No, ADA4098-2BRMZ uses a proprietary SOIC_N pinout optimized for Over-The-Top™ operation and dual shutdown: Pin 1 = VOUT1, Pin 4 = −VS, Pin 5 = +IN2, Pin 6 = −IN2, Pin 7 = VOUT2, Pin 8 = +VS. It is not pin-compatible with industry-standard dual op amps like LM358 or TL082 - PCB layout must follow Figure 5 and Table 7 in the Rev. B datasheet.