AD8278ARMZ-RL

Instrumentation, Op Amps, Buffer Amps Overview

The AD8278ARMZ-RL is a single-channel difference amplifier from Analog Devices, housed in an 8-lead MSOP package. It operates on supply voltages ranging from 2 V to 36 V (single) or ±2 V to ±18 V (dual). Key electrical parameters include a maximum supply current of 200 μA, a bandwidth of 1 MHz at G = ½, and a slew rate of 1.4 V/μs. The device features a minimum common-mode rejection ratio of 80 dB and a maximum input offset voltage of 100 μV for Grade B. It supports gains of ½ and 2, with an operating temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Provides wide input common-mode voltage range extending beyond the supply rails.
• Integrates laser-trimmed resistors for high gain accuracy and enhanced CMRR.
• Includes rugged input overvoltage protection circuitry.
• Delivers low power dissipation suitable for battery-operated systems.

Instrumentation, Op Amps, Buffer Amps Applications

• Voltage measurement and monitoring
• Current measurement and monitoring
• Instrumentation amplifier building block
• Portable, battery-powered equipment

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific grade (B or A) required for your application, as offset voltage and CMRR specifications vary between grades. Confirm that the 8-lead MSOP package aligns with your PCB footprint requirements. Ensure the supply voltage range meets your system's operational needs, as the device supports both single and dual supply configurations. Check for any recent production changes or obsolescence notices via official manufacturer channels before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the AD8278 when a single-channel solution with integrated precision resistors is needed. Consider the AD8279 if two channels are required in a 14-lead SOIC package. Evaluate the trade-off between bandwidth and power consumption, as the device offers 1 MHz bandwidth at very low quiescent current. Verify that the input signal range stays within the specified limits relative to the chosen supply voltage.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD8278 is part of the AD8278/AD8279 family of low-power, wide-supply-range difference amplifiers. It is designed for precision signal conditioning in power-critical applications. The device integrates an op amp and four laser-trimmed resistors to provide a compact alternative to discrete designs. It is fully RoHS compliant and available in space-saving surface-mount packages.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.