AD7729ARU-REEL

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Data acquisition, especially when done on a large-scale, can be very complex and time-consuming. The right data acquisition products can make it much easier, but when it comes to a high level of accuracy and precision, special purpose solutions are often necessary. One such product is the AD7729ARU-REEL from Analog Devices, Inc. This precision analog-to-digital converter (ADC) is designed for use in a wide range of applications in which precise measurements must be made. In this article, we\'ll take a look at the AD7729ARU-REEL\'s application field, its working principle, and how it can be used to simplify data acquisition.

Application Field

The AD7729ARU-REEL is a high-resolution ADC designed for precision data acquisition in a variety of applications. It is ideal for use in industrial systems, consumer electronics, medical equipment, automotive electronics, and other applications where high-precision measurements must be made quickly and accurately. With its +-2 LSB INL, the AD7729ARU-REEL has the resolution and accuracy that make it perfect for use in such sensitive applications.

The AD7729ARU-REEL is a low power solution that consumes just 300 microwatts when operating from a single 1.8 V supply. It is designed to work with both single-ended and differential inputs, providing higher resolution and better noise immunity when operated in differential mode. In addition, the device is available in an 8-pin SOIC package that allows for easy integration into existing data acquisition systems.

Working Principle

The AD7729ARU-REEL uses Sigma-Delta (Σ-Δ) modulation to convert analog signals into digital values. This is a type of conversion method in which signals are oversampled and filtered to reduce noise and improve resolution. Specifically, the AD7729ARU-REEL uses a dual-bit, single-ended, 20-bit Σ-Δ converter to convert analog input signals into high-resolution digital values.

By oversampling inputs by a factor of 16, the Σ-Δ modulator is able to filter out noise and achieve a much higher resolution than would be possible with a traditional ADC. The use of an on-chip track-and-hold (T&H) circuit also enables conversion of much faster input signals, up to 1 MHz, with minimal noise and trim errors.

The AD7729ARU-REEL also features an auto calibration circuit that allows for continuous calibration of the device, ensuring that maximum precision is maintained over time. This feature can also be used to compensate for drift in the system caused by temperature changes.

Conclusion

The AD7729ARU-REEL from Analog Devices, Inc. is a high-precision ADC designed for a variety of data acquisition applications. With its dual-bit, single-ended, 20-bit Σ-Δ converter and on-chip track-and-hold circuit, it offers high resolution, minimal noise, and fast signal conversion. The device also features an auto calibration circuit that ensures maximum precision over time. When used in a data acquisition system, the AD7729ARU-REEL can simplify the process of collecting accurate data and provide reliable results with minimal effort.

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