The AD8221AR-REEL7 is a high-performance instrumentation amplifier designed and manufactured by the renowned Analog Devices Inc. This precision amplifier is engineered to offer excellent accuracy and ease of use for a wide range of applications, including medical devices, industrial process controls, and precision data acquisition systems.

Key Features

• High Gain Accuracy: The AD8221AR-REEL7 boasts a gain accuracy of ±0.15% at G = 1, ensuring precise amplification of input signals without significant deviation.
• Wide Gain Range: With a gain set by a single external resistor, this amplifier offers a wide range of gains from 1 to 10,000, making it extremely versatile for various applications.
• Low Noise: It exhibits a low noise density of 9 nV/√Hz at 1 kHz, which is critical for applications requiring a high signal-to-noise ratio.
• High Common-Mode Rejection Ratio (CMRR): The device provides a CMRR of 100 dB (min) at G = 10, rejecting common-mode signals and enhancing measurement precision.
• Low Input Bias Current: With an input bias current of only 250 nA max, it minimizes errors in applications with high source impedances.
• Wide Supply Range: The AD8221AR-REEL7 operates on a wide supply voltage range from ±2.3 V to ±18 V, accommodating various power supply configurations.

Applications

The AD8221AR-REEL7 is ideal for a multitude of applications that require high-precision signal conditioning. Some of its common applications include:

• Medical instrumentation such as ECG and EEG monitors
• Industrial process controls that require accurate sensor measurements
• Data acquisition systems where signal integrity is paramount
• Strain gage amplifiers for force and weight measurements
• Transducer interfaces for temperature and pressure sensors

Packaging and Quality

The "REEL7" suffix indicates that the AD8221AR is provided in a 7-inch reel package, suitable for automated assembly processes and volume production. Analog Devices Inc. is known for its commitment to quality, and the AD8221AR-REEL7 is no exception, meeting rigorous industry standards for performance and reliability.