AD8221BR: High-Performance Instrumentation Amplifier by Analog Devices

The AD8221BR from Analog Devices Inc. is a precision instrumentation amplifier designed for high-accuracy applications. Despite being marked as obsolete, it remains popular for its exceptional performance in demanding environments. This article provides an in-depth analysis of the AD8221BR, its specifications, and why it s still relevant today.

Introduction to the AD8221BR

The AD8221BR is part of Analog Devices' lineup of high-performance instrumentation amplifiers. It is designed for applications requiring precise signal amplification, such as medical instrumentation, industrial sensors, and data acquisition systems. Packaged in an 8-SOIC format, it is ideal for surface-mount applications where space and performance are critical.

Key Features of the AD8221BR

1. Precision Amplification

The AD8221BR is an instrumentation amplifier, known for its ability to amplify small differential signals while rejecting large common-mode voltages. This makes it perfect for applications where signal integrity is paramount.

2. Low Input Bias Current

With an input bias current of just 200 pA, the AD8221BR minimizes errors caused by source impedance, ensuring accurate signal processing.

3. Wide Supply Voltage Range

The amplifier operates over a broad supply voltage range of 4.6V to 36V, making it versatile for both low-power and high-voltage applications.

4. High Slew Rate and Bandwidth

The 2V/ s slew rate and 825 kHz bandwidth ensure fast signal response, critical for dynamic measurement systems.

5. Robust Operating Temperature Range

With an operating temperature range of -40 C to 85 C, the AD8221BR performs reliably in harsh environments.

Detailed Specifications

• Amplifier Type: Instrumentation Amplifier
• Number of Circuits: 1
• Slew Rate: 2V/ s
• Bandwidth: 825 kHz
• Input Offset Voltage: 25 V
• Supply Current: 900 A per channel
• Output Current: 18 mA
• Package: 8-SOIC

Applications of the AD8221BR

Medical Devices

The AD8221BR is widely used in medical equipment such as ECG machines, where precise signal amplification is crucial for accurate diagnostics.

Industrial Automation

In industrial settings, the amplifier is used in sensors and transducers to ensure accurate measurements in noisy environments.

Data Acquisition Systems

The AD8221BR enhances signal fidelity in data acquisition systems, making it ideal for laboratory and field measurements.

Why Choose the AD8221BR?

Despite its obsolete status, the AD8221BR remains a preferred choice for engineers due to its:

• High precision and low noise
• Wide operating voltage range
• Robust performance in extreme temperatures

Where to Buy the AD8221BR

While the AD8221BR is no longer in production, it can still be sourced from reputable electronic component distributors. Ensure you purchase from trusted suppliers to guarantee authenticity.

Conclusion

The AD8221BR by Analog Devices is a testament to high-performance instrumentation amplification. Its precision, versatility, and reliability make it a valuable component for critical applications. Whether you're working on medical devices, industrial systems, or data acquisition, the AD8221BR delivers unmatched performance.

For more information or to purchase the AD8221BR, visit trusted electronics suppliers today.