AD621BR-REEL7

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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The AD621BR-REEL7 instrument is a high precision, low power and low cost operational amplifier. It is suitable for precision applications that require low supply current, low voltage bias and low noise. It is widely used in computer engineering, automotive and industrial control.

Application Field

The AD621BR-REEL7 is widely used in data acquisition systems, instrumentation amplifiers, medical and portable instrumentation, active filter designs, test and measurement systems, including medical diagnostics and fire systems. It is widely used for analog to digital conversion and multiplexing. The wide common mode ranges and single supply operation capabilities are suitable for both low and high precision designs.

The AD621BR-REEL7 is ideal for high side current sensing applications in power supplies and static DC/DC converters due to its low power, low bias and wide common mode range. It can also be used for current to voltage conversion, bridge circuit sensing and high impedance sensing applications.

Working Principle

The AD621BR-REEL7 is a high-precision, low-power, low-bias and low-noise operational amplifier. It is operated on low quiescent current (typically 3.7mA) while supplying a high open loop gain (up to a million times at frequencies less than 1 KHz). It is also characterized with a low voltage bias (1.2V) in single supply operation. The gain bandwidth product range is 6-80MHz, the common mode ranges from -18V to +18V and the input impedance is extremely high.

Its high input impedance of over 1012 ohms makes it suitable for use with high impedance sensors or in wide dynamic range AC current applications. It features Rail-to-Rail output swing for enhanced power efficiency. Its low noise and high open loop gain guarantee excellent signal integrity and low THD.

The AD621BR-REEL7 uses a very low power AcMOS process, which minimizes quiescent power consumption. It allows operation on battery supplies or limited power sources. Its low 1.2V bias level in single supply operations make it ideal for precision instruments such as medical and portable Electrocardiogram (ECG) monitors.

The AD621BR-REEL7 is also characterized with high slew rate, very low noise and high input impedance of over 1 Terra ohms. The low noise and high open loop gain guarantees excellent signal integrity and low Total Harmonic Distortion (THD).

In conclusion, the AD621BR-REEL7 is a highly versatile, low power and low cost operational amplifier suitable for precision and portable applications. It is widely used in data acquisition systems, instrumentation amplifiers, medical and portable instrumentation, active filter designs, test and measurement systems, including medical diagnostics and fire systems.

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