ADA4091-4ACPZ-RL

Overview

The ADA4091-4ACPZ-RL is a quad micropower operational amplifier from Analog Devices, featuring rail-to-rail input and output capabilities. It operates on single supplies from 3.0 V to 30 V or dual supplies from ±1.5 V to ±15 V. Key electrical specifications include a gain-bandwidth product of 1.27 MHz, a slew rate of 0.46 V/µs, and a maximum offset voltage of 250 µV (±400 µV for LFCSP package). The device draws 200 µA per amplifier and includes overvoltage protection 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 stages, enabling full dynamic range utilization in single-supply systems.
• Delivers micropower efficiency with a supply current of 200 µA per amplifier while maintaining a 1.2 MHz bandwidth.

Applications

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

Procurement Notes

Verify the specific ordering suffix corresponds to the reel packaging configuration required for automated assembly processes. Confirm the component meets RoHS compliance standards applicable to your manufacturing region. Ensure the LFCSP thermal pad connection guidelines are followed during PCB layout to maintain specified thermal resistance values.

Selection Notes

Select this component when high precision is required alongside low power consumption in space-constrained designs. The quad configuration reduces board area compared to using multiple dual amplifiers. Consider the extended industrial temperature range and robust overvoltage protection for harsh environments where input signals may transiently exceed supply limits.

Part Context

This part belongs to the ADA4091 family of low-power, 36 V operational amplifiers manufactured by Analog Devices. It serves as the quad-channel variant within a series that also includes dual-channel versions like the ADA4091-2. The family is designed for applications requiring rail-to-rail performance with minimal power draw.

Replacement Considerations

ADA4091-4ACPZ

FAQ

How does the overvoltage protection function?

The device incorporates internal DIAC structures and series resistors that allow input voltages to exceed the supply rails safely. This prevents phase reversal or latch-up during abnormal conditions, provided input current remains limited.

What is the input voltage range specification?

The input voltage can extend beyond the supply rails due to the overvoltage protection feature. However, normal linear operation is defined by the Common-Mode Rejection Ratio specifications in the datasheet tables for respective supply voltages.