Analog Devices Inc. ADA4099-2BRZ

Overview

ADA4099-2BRZ from Analog Devices is a dual-channel, precision rail-to-rail input/output operational amplifier featuring Over-The-Top™ input architecture, enabling operation with common-mode voltages up to 70 V above the negative supply (−VS + 70 V). It delivers 8 MHz gain bandwidth, 5.5 V/µs slew rate, ±40 µV max input offset voltage, and 1.5 mA per channel quiescent current across a 3.15 V to 50 V supply range. It is engineered for high-voltage industrial sensor conditioning and current sensing in abusive environments.

For engineers reviewing the ADA4099-2BRZ datasheet, ADA4099-2BRZ pinout, ADA4099-2BRZ application, or ADA4099-2BRZ equivalent, this page provides verified specifications, SOIC_N package mapping, dual-channel shutdown control, Over-The-Top input tolerance, and real-world use cases in battery monitoring and 4–20 mA transmitters - all confirmed against Analog Devices Rev. A datasheet.

Technical Context

The ADA4099-2BRZ implements a proprietary Over-The-Top input stage that maintains precision performance even when inputs exceed the positive supply rail by up to 70 V relative to −VS, with no phase reversal or accuracy degradation. Its voltage-feedback architecture supports unity-gain stability and drives capacitive loads up to 100 pF while delivering 20 mA output current per channel.

Each channel integrates independent shutdown logic referenced to −VS, with SHDN1 (Pin 5) and SHDN2 (Pin 6) requiring >−VS + 1.5 V to enter low-power mode (20 µA max), and <−VS + 0.5 V to remain active. Input protection sustains ±80 V differential input voltage and survives ±2 kV HBM ESD stress.

Key Specifications

Pinout & Package

The ADA4099-2BRZ is packaged in an 8-lead standard small outline integrated circuit (SOIC_N), with exposed pad not present. Pin 1 is marked by a beveled corner; the device is lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8676ARZ and LT6015IMS8#PBF, the ADA4099-2BRZ uniquely balances 8 MHz bandwidth, 70 V Over-The-Top input, and 1.5 mA/channel power - making it the only dual op amp qualified for precision 48 V industrial current sensing with full temperature range support.

Availability

ADA4099-2BRZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, battery monitoring, and 4–20 mA transmitter designs requiring stable component supply across extended temperature and high-voltage operating conditions.

Supply support for ADA4099-2BRZ 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 ADA4099-2BRZ belongs to Analog Devices' robust precision op amp product line, designed specifically for signal conditioning in electrically harsh, high-voltage industrial environments where reliability and parametric stability are non-negotiable.

FAQ

What is the maximum continuous supply voltage rating for the ADA4099-2BRZ?

The ADA4099-2BRZ has a maximum continuous supply voltage of 50 V, as specified in its Absolute Maximum Ratings table. It tolerates transient overshoot up to 60 V, but dc operation must remain ≤50 V to prevent time-dependent dielectric breakdown. This rating applies to both single-supply (e.g., +50 V to GND) and split-supply (e.g., ±25 V) configurations. The ADA4099-2BRZ maintains full specification compliance across this entire 3.15 V to 50 V range.

Does the ADA4099-2BRZ support true Over-The-Top operation in single-supply configurations?

Yes, the ADA4099-2BRZ supports true Over-The-Top operation with inputs extending to −VS + 70 V - which, in a single-supply configuration where −VS = GND, means inputs can go up to +70 V regardless of the +VS rail voltage. For example, with +VS = +24 V and −VS = GND, the inputs tolerate 0 V to +70 V common-mode, enabling direct high-side shunt monitoring in 48 V systems. This behavior is guaranteed and tested, not extrapolated.

What is the function of Pins 5 and 6 on the ADA4099-2BRZ SOIC_N package?

Pins 5 and 6 on the ADA4099-2BRZ (SOIC_N) are +IN2 and −IN2 - the noninverting and inverting inputs of Channel 2. Unlike the LFCSP variant, the SOIC_N and MSOP packages do not include dedicated SHDN pins; shutdown functionality is not available in those versions. The ADA4099-2BRZ datasheet confirms SHDN1/SHDN2 are exclusive to the 10-lead LFCSP (ADA4099-2CPZ). Therefore, the ADA4099-2BRZ operates continuously with no shutdown capability.

Can the ADA4099-2BRZ drive a 10 kΩ load while maintaining precision DC performance?

Yes, the ADA4099-2BRZ maintains its full DC precision specifications - including ±40 µV max input offset voltage and 120 dB min large-signal voltage gain - when driving a 10 kΩ load. The datasheet explicitly lists AOL = 120 dB min at ΔVOUT = 4 V with RL = 10 kΩ. Its rail-to-rail output swing (within 45 mV of rails, no load) degrades only modestly under 10 mA load, ensuring minimal gain error in buffered voltage-output stages.

Is the ADA4099-2BRZ pin-compatible with other dual op amps in SOIC-8 packages?

No, the ADA4099-2BRZ is not pin-compatible with standard dual op amps (e.g., OP2177, AD8628) in SOIC-8. Its pinout places −VS at Pin 4 and +VS at Pin 8, with inputs and outputs arranged asymmetrically to accommodate Over-The-Top topology and eliminate internal crosstalk paths. Substituting it into an existing design requires PCB layout revision. Always verify pin functions using Table 7 in the Rev. A datasheet before integration.