AD7861APZ

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Analog to digital converters (ADC) are a type of data acquisition system used to transform direct current (DC) signals of varying amplitudes into digital values for further analysis and storage. The AD7861APZ is a high speed, low-power precision delta-sigma analog-to-digital converter that fulfills the need for accurate and reliable conversion. This device was developed with a main focus on applications that involve large signals in order to handle a range of tasks with accuracy.

Utilizing a switched-capacitor Delta-Sigma ADC architecture with true 16-bit accuracy, the AD7861APZ provides a maximum sample rate of 2.5k samples per second. This allows for accurate data transmission over large signal ranges, reducing the needs for error correction and complex algorithms. Furthermore, it provides a dynamic range that scale up to 3V which allows for less common or exotic variable ranges to be measured with ease. Included on the chip are an on-chip temperature sensor, 16-bit DAC, four analog inputs, eight digital inputs, and eight digital outputs.

The AD7861APZ has numerous applications in various fields. When it comes to consumer electronics, the device is ideal for motor control, humanoid robotics, authentication systems, and power grids. It’s also suitable for industrial and medical applications such as pressure sensing, gas sensing, and radiation detection. The AD7861APZ is even used in scientific experiments such as particle detection and particle physics.

Working Principle
The AD7861APZ ADC works by first converting analog signals into a digital bitstream. The analog signal is sent to a comparator where it is converted into a digital signal. Then the digital signal is sent to the digital encoder and divided into seven-bit segments. The seven-bit segments are then converted into a single 16-bit number that is sent to the output buffer. This process is known as delta-sigma ADC, which is the most common method of analog-to-digital conversion.

In order to ensure accuracy and precision, the AD7861APZ incorporates a high-resolution delta-sigma ADC architecture. This architecture combines high resolution, low offset, and low distortion conversion with a large dynamic range. The architecture consists of three interconnected layers, with each layer responsible for different functions. The oversampling layer is responsible for the acquisition of the analog signal while the sigma-delta layer is responsible for the conversion and digital processing of the signal. Finally, the filter layer is responsible for filtering out the noise and providing a clean bitstream output.

The AD7861APZ features a multi-level successive approximation register (SAR) converter architecture, which helps to reduce power consumption and improve speed. The SAR converter utilizes a fast and accurate capacitor array to convert the input analog signal into its digital representation. The SAR converter is then followed by a digital filter, which is responsible for reducing the quantization noise from the analog signal before being sent to the output.

The AD7861APZ also utilizes a minimum-phase digital filter that helps to reduce the noise present in the analog signal. This filter helps to ensure the accuracy and precision of the analog-to-digital conversion by removing the impurities from the signal before the final data is sent to the output. The filter also helps to reduce the overall power consumption of the device by removing the higher frequency components that require more power.

Conclusion
The AD7861APZ analog to digital converter is a versatile and reliable device designed to provide high-accuracy, low power consumption, and low distortion conversion. Its wide range of applications make it a popular choice in consumer electronics, medical devices, and scientific experiments. By using a high-resolution delta-sigma ADC architecture, the AD7861APZ is able to achieve accurate, high-precision conversion with a wide dynamic range and low power consumption. The device is also compatible with a minimum-phase digital filter, allowing for improved accuracy in the conversion process.

The specific data is subject to PDF, and the above content is for reference