DEM-ADS9XXE

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Analog-to-Digital Converters (ADCs) are essential technologies in the invention and development of modern electronic devices. The wide popularity of ADCs has been due to its successful integration of two powerful components: analog and digital processes. With this integration, analog-to-digital converters have been used in a variety of applications, from medical diagnosis to image processing. Among all those, the DEM-ADS9XXE series are a type of evaluation boards for data acquisition of analog signals, widely used in industrial and consumer applications. This article attempts to provide a comprehensive overview on the application field and working principle of DEM-ADS9XXE.

In terms of applications, the DEM-ADS9XXE can perform A/D conversion of analog input signals in a range of different frequency bands. This includes frequency spans that range from the high frequency end of the audio spectrum (up to 1 MHz) to the low frequency domain of the visible light spectrum (down to 0.2 Hz). Thus, various signals from multiple sources can be recorded and analyzed. In addition, this series is suitable for applications dealing with a variety of analytical tasks, such as gravity sensing, medical image acquisition, ultrasound measurements, temperature monitoring, and air pressure data collection. Also, for commercial or application not mentioned, the DEM-ADS9XXE can still be used to support such task.

Returning to the specific design feature of the DEM-ADS9XXE, its core of the operation is built around the highly efficient ARM Cortex-A7 processor which gives it the capability to achieve high speeds when dealing with digital signal processing. The built-in band gap reference generator provides a stable and adjustable reference output, and there are multiple voltage regulator options available for power supply selection. The device also boasts a programmable clocking system, as well as flexibility in the location of the sampling clock signal. Also, thanks to its low power consumption and thermal properties, the DEM-ADS9XXE series presents a reliable solution that can be used in a wide range of operating environments.

On the functional level, the DEM-ADS9XXE works by converting analog signals into digital formats. This is accomplished by a differential amplifier and comparator. The differential amplifier compares two input signals (one signal is the input signal and the other is the reference voltage) and outputs a digital signal that is encoded to represent the digital value of the input signal. The comparator sets the threshold, which is the level at which the analog input is increased. Once the analog value is equal to or higher than the threshold, the comparator will set the digital output high. This process is done continuously until the entire analog signal is converted to a digital format.

Advanced features included in the DEM-ADS9XXE series include the capability to generate digital filters that selectively filter useful information from the analog inputs. For example, a band-pass filter can be used to remove unwanted noise from the signal and only pass through the desired frequencies. This filtering can be done by creating a frequency domain from the analog signal and then analyzing each frequency component. This helps to reduce the noise and enhances the quality of the signal.

Overall, the DEM-ADS9XXE series evaluation boards are a flexible and robust solution for converting analog signals into digital formats. With an extensive application range, advanced digital signal processing capabilities, and a reliable design, it is well suited for a variety of embedded system and industrial applications. As demonstrated above, its features offer a reliable, energy efficient platform for data acquisition and analysis of a wide range of analog signal sources.

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