Analog Devices Inc. ADA4098-1HUJZ-RL7

Overview

ADA4098-1HUJZ-RL7 from Analog Devices is a single-channel, robust precision operational amplifier featuring Over-The-Top™ input architecture, 1.05 MHz gain bandwidth, ±35 µV max input offset voltage, and operation from +3 V to +50 V supply. It delivers rail-to-rail input/output swing with common-mode range extending to −VS − 0.1 V and up to −VS + 70 V, enabling high-side current sensing in battery monitoring and industrial power systems.

For engineers reviewing the ADA4098-1HUJZ-RL7 datasheet, ADA4098-1HUJZ-RL7 pinout, ADA4098-1HUJZ-RL7 application, or ADA4098-1HUJZ-RL7 equivalent, this device is selected for abusive-environment signal conditioning where input overvoltage tolerance, wide temperature operation (−55°C to +150°C), low 165 µA supply current, and ±3 kV HBM ESD robustness are critical design requirements.

Technical Context

The ADA4098-1HUJZ-RL7 implements an Over-The-Top™ input stage that enables differential input operation beyond the negative rail by up to 70 V, independent of positive supply voltage. Its input protection tolerates ±80 V differential voltage without damage or dc accuracy degradation.

This op amp uses a unity-gain stable architecture with 0.85 V/µs slew rate (at ΔVOUT = 25 V) and drives capacitive loads up to 200 pF. Shutdown functionality reduces supply current to 20 µA max while placing the output in high-impedance state, controlled via SHDN pin referenced to −VS.

Key Specifications

Pinout & Package

The ADA4098-1HUJZ-RL7 is housed in a 6-lead thin small outline transistor (TSOT) package (UJ-6), with exposed pad thermally connected to −VS. This compact 1.5 mm × 1.5 mm footprint supports high-density PCB layouts in space-constrained industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT6015IMS8#PBF and OPA192IDBVR, the ADA4098-1HUJZ-RL7 uniquely supports input voltages exceeding the positive supply rail by up to 70 V - a non-negotiable requirement for isolated high-side current monitoring in 48 V systems without auxiliary supplies or level shifters.

Availability

ADA4098-1HUJZ-RL7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, battery and power supply monitoring, and 4 mA–20 mA transmitter designs requiring stable component supply across extended temperature and high-reliability production cycles.

Supply support for ADA4098-1HUJZ-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 ADA4098-1HUJZ-RL7 belongs to Analog Devices' Over-The-Top™ precision op amp family, engineered specifically for signal conditioning in harsh, high-voltage industrial environments where input overvoltage resilience and wide temperature operation are mandatory.

FAQ

What is the maximum continuous supply voltage rating for the ADA4098-1HUJZ-RL7?

The ADA4098-1HUJZ-RL7 has a maximum continuous operating supply voltage of +50 V, as defined by time-dependent dielectric breakdown limits of on-chip capacitor oxides. Transient overshoots up to +60 V are tolerated per absolute maximum ratings, but dc operation must remain ≤+50 V to ensure long-term reliability. This rating applies to both single-supply (+VS to ground) and split-supply (±25 V) configurations.

Does the ADA4098-1HUJZ-RL7 support true Over-The-Top operation, and what does that mean for circuit design?

Yes, the ADA4098-1HUJZ-RL7 supports true Over-The-Top™ operation: its inputs function correctly with common-mode voltages up to −VS + 70 V, even when +VS is at a lower potential. This means the device can directly sense high-side currents in 48 V battery systems without level-shifting circuitry, simplifying layout, reducing component count, and eliminating associated errors from resistor mismatches or temperature drift in divider networks.

What is the guaranteed input offset voltage specification for the ADA4098-1HUJZ-RL7 across temperature and common-mode range?

The ADA4098-1HUJZ-RL7 guarantees ±35 µV maximum input offset voltage at 25°C for V_CM = −0.1 V to +70 V. Over full temperature (−55°C to +150°C), the H-grade device specifies ±200 µV max. This tight offset, combined with ±0.8 µV/°C max drift, ensures minimal baseline error in precision DC-coupled applications such as strain gauge amplification and shunt-based current measurement.

How does the shutdown feature of the ADA4098-1HUJZ-RL7 operate, and what is its response time?

The ADA4098-1HUJZ-RL7 enters shutdown when the SHDN pin voltage exceeds −VS + 1.5 V, reducing supply current to ≤20 µA and placing VOUT in high-impedance state. Activation from shutdown to active takes ≤30 µs; deactivation takes ≤2.5 µs. The SHDN pin is referenced to −VS, enabling seamless integration into single-supply systems where −VS = ground - no level translation is required.

Is the ADA4098-1HUJZ-RL7 qualified for operation at −55°C, and what package supports this rating?

Yes, the ADA4098-1HUJZ-RL7 is rated for operation from −55°C to +150°C as an H-grade device. This qualification is supported by its UJ-6 (6-lead TSOT) package, which features an exposed pad thermally connected to −VS - a construction validated for extended temperature cycling and mechanical reliability in aerospace and downhole applications.