Analog Devices Inc. ADA4097-2HRZ

Overview

ADA4097-2HRZ 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 accepts common-mode inputs up to 70 V above the negative rail - enabling direct battery voltage monitoring and current sensing in 4 mA–20 mA transmitters.

For engineers reviewing the ADA4097-2HRZ datasheet, ADA4097-2HRZ pinout, ADA4097-2HRZ application, or ADA4097-2HRZ equivalent, key selection criteria include its −VS − 0.1 V to −VS + 70 V input range, ±60 µV max input offset voltage, shutdown capability, 120 dB min CMRR over full common-mode range, and operation across −55°C to +150°C.

Technical Context

The ADA4097-2HRZ implements an Over-The-Top™ input stage that enables rail-to-rail and beyond input operation independent of positive supply voltage, with robust differential input tolerance up to ±80 V. Its architecture maintains dc accuracy (±60 µV VOS, ±1 µV/°C drift) and 120 dB CMRR even at VCM = −0.1 V to +70 V.

It features two independent amplifiers with dedicated shutdown pins (SHDN1/SHDN2) in the 10-lead LFCSP package, delivering 0.1 V/µs slew rate, 130 kHz GBP, and stable unity-gain performance driving capacitive loads ≤200 pF and resistive loads up to 20 mA per channel.

Key Specifications

Pinout & Package

The ADA4097-2HRZ is packaged in a 10-lead lead-frame chip-scale package (LFCSP) with exposed pad, optimized for thermal performance in high-temperature PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADA4091-2ARZ and OPA2182IDGKR, the ADA4097-2HRZ uniquely combines 70 V over-the-top input tolerance, 32.5 µA/channel quiescent current, and per-channel shutdown in a high-temperature qualified package - making it irreplaceable for ruggedized current sensing and battery monitoring where input voltage exceeds the positive supply.

Availability

ADA4097-2HRZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, supply current sensing, and battery monitoring requiring stable component supply across extended temperature and high-voltage operating conditions.

Supply support for ADA4097-2HRZ 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 ADA4097-2HRZ belongs to Analog Devices' Over-The-Top™ precision op amp product line, engineered specifically for signal conditioning in electrically harsh, high-voltage industrial environments where input signals exceed supply rails and reliability across extreme temperatures is mandatory.

FAQ

What is the maximum continuous supply voltage for the ADA4097-2HRZ?

The ADA4097-2HRZ supports a maximum continuous supply voltage of +50 V, as specified in its absolute maximum ratings. This limit is defined by time-dependent dielectric breakdown (TDDB) constraints of internal oxide layers. While transient overshoot up to +60 V is tolerated, sustained operation must remain at or below +50 V to ensure long-term reliability. The ADA4097-2HRZ maintains full parametric performance across its entire +3 V to +50 V operating range.

Does the ADA4097-2HRZ support true Over-The-Top™ operation in both single- and split-supply configurations?

Yes, the ADA4097-2HRZ supports Over-The-Top™ operation regardless of supply configuration. Its input stage functions correctly with common-mode voltages from −VS − 0.1 V to −VS + 70 V - meaning it accepts inputs exceeding the positive supply rail by up to 70 V above −VS, whether powered from +5 V single supply or ±15 V split supply. This behavior is verified across all tested grades and temperature ranges, and is independent of +VS magnitude.

How does the shutdown feature work on the ADA4097-2HRZ, and what is its impact on output state?

The ADA4097-2HRZ provides independent shutdown control via SHDN1 and SHDN2 pins (Pins 5 and 6). When either pin is driven above −VS + 1.5 V, the corresponding amplifier enters shutdown mode, reducing its supply current to ≤20 µA and placing its output (VOUT1 or VOUT2) into a high-impedance state. Output leakage during shutdown is ±100 nA maximum. The ADA4097-2HRZ exits shutdown in ≤100 µs, enabling rapid wake-up in duty-cycled sensor systems.

Can the ADA4097-2HRZ drive a 10 kΩ load while maintaining precision dc performance?

Yes, the ADA4097-2HRZ maintains its specified dc accuracy - including ±60 µV max input offset voltage and 120 dB min CMRR - when driving a 10 kΩ load. Its large-signal voltage gain remains ≥120 dB with ΔVOUT = 3.5 V into 10 kΩ, and output swing is guaranteed to within 325 mV of the rails under 5 mA sink/source conditions. These parameters are explicitly characterized in Table 1 and Table 2 of the ADA4097-2HRZ datasheet.

Is the ADA4097-2HRZ pin-compatible with other packages of the same device family?

No, the ADA4097-2HRZ (10-lead LFCSP) is not pin-compatible with the 8-lead SOIC_N or MSOP variants of the ADA4097-2. Only the 10-lead LFCSP package includes dedicated SHDN1 and SHDN2 pins (Pins 5 and 6); the SOIC_N and MSOP versions lack shutdown functionality entirely. Pin mapping, thermal pad configuration, and footprint dimensions differ significantly - requiring separate PCB layouts for each package variant of the ADA4097-2HRZ.