AD8228ARZ-RL

Instrumentation, Op Amps, Buffer Amps Overview

The AD8228ARZ-RL is a precision instrumentation amplifier from Analog Devices, featuring internal laser-trimmed resistors for high gain accuracy. It offers pin-strappable gains of 10 and 100 with low drift characteristics. Key specifications include a maximum input offset voltage of 50 μV, a CMRR of 100 dB at G=10, and a -3 dB bandwidth of 650 kHz. It operates on dual supplies ranging from ±2.3 V to ±18 V with a quiescent current of 1 mA. The device is housed in an 8-lead MSOP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Pin-strappable gain configuration allows selection between gains of 10 and 100 without external components.
• Internal laser-trimmed resistors ensure superior gain accuracy and low gain drift compared to typical instrumentation amplifiers.
• High common-mode rejection ratio (CMRR) provides immunity to disturbances such as line noise and harmonics.
• Wide supply voltage range supports operation in applications requiring high common-mode input voltages.

Instrumentation, Op Amps, Buffer Amps Applications

• Weigh scales
• Industrial process controls
• Bridge amplifiers
• Precision data acquisition systems
• Medical instrumentation

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific grade (A or B) required for your application, as DC specifications like offset voltage and CMRR vary between grades. Confirm that the 'RL' suffix corresponds to the reel packaging format intended for your assembly line. Ensure the design accommodates the specified operating temperature range of −40°C to +85°C for guaranteed performance.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high DC precision and low gain drift are critical, particularly for bridge signal conditioning. The internal gain setting simplifies PCB layout by eliminating external gain resistors. Consider the 650 kHz bandwidth and 2 V/μs slew rate for dynamic signal requirements. Verify that the input bias current and offset voltage meet the sensitivity needs of the transducer interface.

Instrumentation, Op Amps, Buffer Amps Part Context

The AD8228 belongs to the Analog Devices instrumentation amplifier family, designed for high-performance signal conditioning. It utilizes a classic three-op amp topology with internal feedback loops. Unlike general-purpose op amps, it integrates precision matched resistors internally. This architecture distinguishes it from programmable gain amplifiers or zero-drift amplifiers within the broader product portfolio.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The AD8221 is a pin-compatible alternative offering a wider gain range of 1 to 1000. For applications requiring rail-to-rail output, consider the AD8220 or AD8221 series. Verify that any substitute maintains the required CMRR and gain accuracy specifications for the specific circuit topology.