AD7927BRUZ

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Data Acquisition is the process of collecting data from electrical and non-electrical sources. Data Acquisition systems have become increasingly popular, as the technology to acquire data has advanced and the range of applications that can benefit from data acquisition capabilities is ever increasing. AD7927BRUZ is a prime example of a Data Acquisition device, specifically an Analog to Digital Converter (ADC).

The AD7927BRUZ is a 12-bit ADC, operating on a single 5V supply. It contains an on-chip precision voltage reference, making it ideal for portable and low power applications. The main features of the AD7927BRUZ are its low power operation and its serial interface, which allows the user to easily interface the ADC to a microcontroller. The AD7927BRUZ is available in a number of packages, including a 28-pin SSOP and a 32-pin TQFP.

The AD7927BRUZ is an ideal device for analog-to-digital (A/D) conversion of signals which require precision, such as temperature and pressure transducers, acoustic transducers, current and voltage measurements. Additionally, it can be used in applications such as test and measurement processing, automotive and process control systems, and instrumentation systems. It is also particularly suitable for applications requiring a quick conversion rate such as data logging, signal processing, and network control.

The working principle of the AD7927BRUZ is based on Delta-Sigma modulators. Delta-Sigma modulators are analog-to-digital converters which use a sampling technique to convert an analog input signal into a digital signal. The AD7927BRUZ contains two on-chip Delta-Sigma modulators and an 8-bit analog-to-digital converter. The two Delta-Sigma modulators are connected in series and the outputs are combined to form a 12-bit digital output.

The two Delta-Sigma modulators are basically digital filters. The first modulator oversamples the input signal, then it applies a delta-sigma loop which filters out noise, and then the second modulator oversamples the output of the first modulator. This process is known as noise shaping. The filters are adapted dynamically to the incoming signal, so that the signal can be accurately represented by fewer bits.

The analog-to-digital conversion is initiated by a "start conversion" signal, which is generated by the microcontroller. Once the conversion process is started, the microcontroller receives a 12-bit digital value, which represents the analog input. The start conversion signal is used to synchronize the output data with the input signal for data logging and signal processing applications.

The AD7927BRUZ has low noise and low power consumption, making it ideal for low-power, portable applications. It is also highly integrated, making it suitable for applications which require integration of many functions. Its serial interface makes it easy to interface with microcontrollers.

In summary, the AD7927BRUZ is a highly integrated, low power and low noise ADC, suitable for use in portable and low-power applications such as temperature and pressure transducers, current and voltage measurements, data logging, signal processing, and network control. Its Delta-Sigma modulator is particularly effective in filtering out noise, making it ideal for applications which require a high level of precision. Its serial interface makes it easy to interface with microcontrollers.

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