AD977AR-REEL

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Analog to Digital Converters (ADC) are a type of data acquisition hardware that converts analog signals into digital form, which can then be used for further analysis and processing. The AD977AR-REEL is an integrated circuit from Analog Devices that provides such a conversion. The chip is designed for low-power operation and wide temperature ranges, making it an ideal choice for harsh environment data acquisition applications. In this article, we will discuss the application field and working principle of the AD977AR-REEL.

Application Fields

The AD977AR-REEL is primarily used in data acquisition and control applications that require low noise and high accuracy. These applications typically involve analog signals that need to be converted into digital data, such as temperature, pressure, and flow measurements. The wide temperature range and low power consumption of the AD977AR-REEL make it suitable for use in demanding environments, where other converters would not be able to operate reliably.

The chip is also suitable for motor control applications, as it can convert analog signals from sensors into digital form for use by a microcontroller. This makes it ideal for use in robotics, as well as in any application where precise control of a motor is required.

Working Principle

The AD977AR-REEL uses a delta-sigma modulator to convert analog signals into digital form. This is a type of analog-to-digital converter (ADC) which is based on the conversion of a continuous-time signal into a discrete-time signal. This conversion is done by processing the analog input in a feedback loop, with the output being a digital bit stream.

The ADC performs this conversion by sampling the analog signal at regular intervals and converting each sample into a digital word. The resolution of analog-to-digital converters is determined by the number of bits in the digital word; the AD977AR-REEL is an 18-bit converter, meaning it is able to represent up to 262,144 different values.

The ADC also takes into account the noise in the signal. Delta-sigma modulators use a technique called “oversampling”, which is a process of taking multiple samples of the signal and averaging them to reduce the effect of noise. This allows for better accuracy than other types of ADCs.

Conclusion

The AD977AR-REEL integrated circuit from Analog Devices is a low-power, wide-temperature range converter. It is designed for use in data acquisition and motor control applications, and is especially suited for harsh environment applications. The chip uses a delta-sigma modulator to convert analog signals into digital form, with 18-bit resolution and oversampling to reduce the effects of noise. This makes it an ideal choice for applications where accuracy and reliability are of the utmost importance.

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