ADA4091-2ARZ-R7

Overview

The ADA4091-2ARZ-R7 is a dual micropower precision operational amplifier featuring rail-to-rail input and output capabilities. It operates from single supplies of 3.0 V to 30 V or dual supplies of ±1.5 V to ±15 V. Key electrical specifications include a gain bandwidth product of 1.22 MHz, a maximum offset voltage of 250 µV, and a supply current of 200 µA per amplifier. The device incorporates on-chip overvoltage protection (OVP) allowing inputs to exceed supply rails without phase reversal.

Feature Summary

• Features integrated overvoltage protection circuitry that allows input voltages to safely exceed supply rails without causing phase reversal or latch-up.
• Provides rail-to-rail signal swing at both the input and output terminals, enabling design flexibility in single-supply systems.
• Utilizes a unique input stage architecture combining PNP and NPN differential pairs to maintain linearity across the full common-mode voltage range.

Applications

• Industrial process control
• Battery-powered instrumentation
• Power supply control and protection
• Telecommunications equipment
• Remote sensors

Procurement Notes

Verify the specific package type matches the required PCB footprint, as the component is available in multiple configurations including SOIC and LFCSP. Confirm the ordering suffix corresponds to the desired reel quantity and tape packaging standard for automated assembly processes. Ensure the temperature grade aligns with the intended operating environment requirements.

Selection Notes

Select this component when low power consumption is critical alongside high precision requirements. The rail-to-rail I/O capability makes it suitable for low-voltage applications where maximizing dynamic range is necessary. Consider the overvoltage protection feature for environments prone to transient input spikes or incorrect wiring conditions.

Part Context

This part belongs to the ADA4091 family of low-power, 36 V operational amplifiers manufactured by Analog Devices. The family includes dual and quad variants designed for industrial and portable applications requiring high accuracy and robust input protection features under varying supply voltage conditions.

Replacement Considerations

Consult official manufacturer documentation for verified cross-reference part numbers before substitution. Verify pin compatibility and electrical parameter equivalence to ensure functional integrity in existing designs.