ADA4077-1ARMZ

Overview

The ADA4077-1ARMZ is a single-channel precision operational amplifier from Analog Devices, housed in an 8-lead MSOP package. It features a gain bandwidth product of 3.9 MHz and a slew rate of 1.2 V/µs. The device operates on dual supplies ranging from ±2.5 V to ±15 V with a typical supply current of 400 µA per amplifier. Key electrical characteristics include a maximum input offset voltage of 90 µV (A grade) and a drift of 1.2 µV/°C over the extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Extremely low offset voltage and drift for high DC accuracy
• Low input bias current insensitive to ambient temperatures
• Stable operation with capacitive loads exceeding 1000 pF without external compensation
• Immunity to output phase reversal even beyond common-mode limits

Applications

• Sensor signal conditioning including thermocouples, RTDs, and strain gauges
• Process control front-end amplifiers
• Precision filters
• Optical and wireless transmission systems for diode power measurement

Procurement Notes

Verify the specific grade (A or B) required for your application, as offset voltage specifications vary significantly between grades. Confirm that the 8-lead MSOP package dimensions align with your PCB footprint constraints. Ensure the MSL1 rating meets your assembly process requirements regarding moisture sensitivity levels.

Selection Notes

Select this component when high precision is required alongside low power consumption. The ADA4077-1ARMZ offers superior performance compared to previous generations like the OP177, providing lower offset and higher bandwidth. Consider the A grade if tighter offset tolerances are necessary, noting the trade-off in cost versus the B grade availability in other packages.

Part Context

This device belongs to the sixth generation of the industry-standard OP07 amplifier family. It represents a significant advancement in precision amplification technology by combining extremely low offset with very low input bias currents. Unlike JFET amplifiers, its performance remains stable across wide temperature variations, making it suitable for demanding environments.

Replacement Considerations

Public confirmed substitute part numbers: ADA4077-1ARZ.