AD8226ARMZ-RL

Instrumentation, Op Amps, Buffer Amps Overview

The AD8226ARMZ-RL is a low-cost, wide supply range instrumentation amplifier manufactured by Analog Devices Inc. It features rail-to-rail output and requires only one external resistor to set gain between 1 and 1000. The device operates on single supplies from 2.2 V to 36 V or dual supplies from ±1.35 V to ±18 V. Key electrical specifications include a bandwidth of 1.5 MHz at G=1, typical supply current of 350 μA, and input noise of 22 nV/√Hz. It is specified for operation from −40°C to +125°C and is housed in an 8-lead MSOP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Gain is programmable using a single external resistor across a range of 1 to 1000.
• Input voltage range extends below the negative supply rail, allowing ground-referenced signal amplification without dual supplies.
• Inputs are protected against overvoltage conditions up to ±40 V beyond the supply rails.
• Output stage provides rail-to-rail swing capability.

Instrumentation, Op Amps, Buffer Amps Applications

• Industrial process controls
• Bridge amplifiers
• Medical instrumentation
• Portable data acquisition
• Multichannel systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the ordering suffix -RL corresponds to the reel packaging format required for your assembly line. Confirm the specific model variant (e.g., ARMZ vs BRMZ) matches the required CMRR and offset specifications, as performance parameters differ between variants. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a minimum gain of 1 is required, unlike similar devices such as the AD8227 which have a minimum gain of 5. Consider the AD8226 for space-constrained designs due to its MSOP package and high temperature rating. Evaluate the trade-off between the standard ARMZ variant and the higher-performance BRMZ variant based on common-mode rejection requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD8226 belongs to Analog Devices' family of low-cost instrumentation amplifiers designed for general-purpose applications. It utilizes a classic three-op-amp topology with integrated ESD and overvoltage protection. The device is positioned as a cost-effective solution for multichannel systems where board space and power consumption are critical constraints.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The AD8227 is a compatible alternative with a similar package and performance profile but offers a gain range starting from 5 rather than 1.

Instrumentation, Op Amps, Buffer Amps FAQ

Can the AD8226 amplify signals near ground without a negative supply?

Yes, the input voltage range includes the ability to go below the negative supply, allowing small signals near ground to be amplified using only a single positive supply.

What is the maximum input overvoltage the device can withstand?

The inputs are guaranteed to withstand voltages up to ±40 V beyond the supply rails without damage.