Analog Devices Inc. ADA4097-2BRMZ-RL7

Overview

ADA4097-2BRMZ-RL7 from Analog Devices is a dual-channel, precision, Over-The-Top™ operational amplifier designed for high-voltage, low-power sensor signal conditioning in harsh industrial environments. It operates from +3 V to +50 V supply, delivers 130 kHz gain bandwidth, draws only 32.5 µA per channel, and supports common-mode inputs up to +70 V beyond the negative rail - enabling direct battery voltage monitoring and current sensing in 4 mA–20 mA transmitters.

For engineers reviewing the ADA4097-2BRMZ-RL7 datasheet, ADA4097-2BRMZ-RL7 pinout, ADA4097-2BRMZ-RL7 application, or ADA4097-2BRMZ-RL7 equivalent, key selection criteria include its ±60 µV max input offset voltage, −55°C to +150°C H-grade temperature range, robust ±2 kV HBM ESD rating, shutdown capability, and verified performance in over-the-rail front-end amplifiers where rail-to-rail input and output swing are critical.

Technical Context

The ADA4097-2BRMZ-RL7 implements an Over-The-Top™ input stage that enables operation with common-mode voltages up to +70 V above −VS while maintaining precision DC performance - including ±60 µV max VOS and 120 dB min CMRR across that full range. Its input protection tolerates ±80 V differential input without damage or accuracy degradation.

This dual op amp features unity-gain stability, drives ≥20 mA per channel, supports capacitive loads up to 200 pF, and includes independent shutdown control (SHDN1/SHDN2) with 2.5 µs activation and 100 µs wake-up response. The device is specified for both B-grade (−40°C to +125°C) and H-grade (−55°C to +150°C) operation, with thermal shutdown at 175°C.

Key Specifications

Pinout & Package

The ADA4097-2BRMZ-RL7 is packaged in an 8-lead SOIC_N (R-8) surface-mount package 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 ADA4077-2ARMZ and OPA2182IDR, the ADA4097-2BRMZ-RL7 uniquely combines 50 V operation, 70 V over-the-rail input, and H-grade temperature range - making it irreplaceable in high-reliability industrial monitoring where voltage abuse and wide ambient swings coexist.

Availability

ADA4097-2BRMZ-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 ADA4097-2BRMZ-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 ADA4097-2BRMZ-RL7 belongs to Analog Devices' Over-The-Top™ precision op amp family, engineered specifically for ruggedized signal acquisition in high-voltage, high-temperature, and electrically noisy environments - such as motor drives, power supplies, and process control systems.

FAQ

What is the maximum common-mode input voltage for ADA4097-2BRMZ-RL7?

The ADA4097-2BRMZ-RL7 supports a guaranteed common-mode input range from −VS − 0.1 V to −VS + 70 V. This means when −VS = 0 V (single-supply), inputs can safely operate up to +70 V - enabling direct high-side shunt monitoring without external level shifting. The specification is validated across temperature and supply conditions per Table 1 and Table 2 of the Rev. A datasheet.

Does ADA4097-2BRMZ-RL7 have shutdown capability, and how is it controlled?

Yes, ADA4097-2BRMZ-RL7 includes independent shutdown control for each channel via SHDN1 (Pin 5) and SHDN2 (Pin 6). An input voltage > −VS + 1.5 V places the corresponding amplifier in shutdown, reducing supply current to ≤20 µA per channel. The output enters high-impedance state. Activation time is 2.5 µs; wake-up time is 100 µs. Pin functions are defined in Table 7 and Table 8 of the datasheet.

What package type is ADA4097-2BRMZ-RL7, and does it include thermal enhancement?

ADA4097-2BRMZ-RL7 uses an 8-lead SOIC_N (R-8) package with an exposed pad (EPAD). The EPAD must be soldered to a PCB copper plane connected to −VS to ensure optimal thermal performance and electrical stability. Thermal resistance is θJA = 120°C/W on a JEDEC 4-layer board - significantly lower than TSOT or MSOP variants due to the EPAD's heat-spreading capability.

Can ADA4097-2BRMZ-RL7 drive capacitive loads, and what is the maximum supported value?

Yes, ADA4097-2BRMZ-RL7 is stable driving capacitive loads up to 200 pF, as confirmed in the General Description and Applications Information sections of the datasheet. This capability supports direct connection to ADC input filters or long PCB traces without external isolation resistors - provided layout follows recommended grounding and bypassing practices (e.g., 0.1 µF ceramic caps at each supply pin).

Is ADA4097-2BRMZ-RL7 qualified for automotive or aerospace applications?

ADA4097-2BRMZ-RL7 is not AEC-Q200 qualified, but its H-grade version is rated for −55°C to +150°C operating temperature and features ±2 kV HBM ESD protection - meeting key environmental stress requirements for under-hood automotive subsystems and downhole industrial tools. For formal automotive qualification, users must perform system-level validation per ISO 16750 and AEC standards.