XRD8775AIU

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Analog to Digital Converters (ADCs) are an integral and vital technology for today’s data acquisition systems. ADCs are necessary for capturing and digitizing an analog signal from a variety of sources such as physical sensors and transducers. Often the converted digital signal is then processed and stored for further analysis or transmission. One such ADC is the XRD8775AIU, which is a single-channel analog to digital converter produced by Xilinx.

The XRD8775AIU is a highly integrated 12-bit, 10 MSPS ADC. With a 1.8V analog supply and 3.3V digital supply, it is suitable for low-power applications. The device consumes only 225 mW at a throughput rate of 10 MSPS and provides a wide input dynamic range from 0 to 5V. The XRD8775AIU offers a wide range of features including a 70 MHz input clock, a maximum output data rate of 200 MHz, low-noise performance, and high accuracy and dynamic range.

The main application of the XRD8775AIU is for data acquisition systems that require high accuracy ADC performance such as medical diagnostic and ultra-fast imaging applications. The ADC has a high sample rate and it is suitable for applications that require a wide dynamic range and low noise level. Besides this, the device is also useful for general-purpose applications such as video and audio digitizing, industrial process control, high-speed sampling, etc.

The XRD8775AIU uses the 4-stage pipelined ADC architecture, which provides an efficient conversion rate and low power consumption. The 4-stage architecture involves the use of a differential input pair and a clock generator for the input data, followed by an amplifying stage, an analog-to-digital conversion stage, and a post-production digital filter. The first stage of the pipeline is a pseudo-differential input stage that accepts a bipolar differential input within a 0-5V range. It converts the differential input signal into a single-ended analog voltage. The voltage is then amplified to provide a linear input range of 0V to 5V. This amplified signal is then digitized using successive approximation via a 12-bit conversion. The output of this stage is then filtered using a low-pass filter. The output of this filter is then combined with a digital noise-reduction equalizing filter to produce the actual digital output data.

The XRD8775AIU boasts an effective noise reduction equalizing filter that minimizes the unexpected output noise introduced by the ADC’s architecture. This filter offers band-limited low-noise performance, which allows the ADC to capture signals with an excellent signal-to-noise ratio. Another feature of the XRD8775AIU is its embedded on-chip test circuitry, which makes it easy to test and adjust the performance of the device. It also has an output data rate of up to 200MHz and a low-power operation of 225mW at 10MSps, which makes it suitable for a wide range of power-sensitive applications.

The XRD8775AIU is a highly integrated, power-saving ADC that provides a wide range of features for low-power applications. Its single-channel architecture and output data rate of up to 200MHz make it appropriate for applications such as medical imaging, video digitizers, and industrial process control. Additionally, its low-power operation and noise damping capabilities give it superior performance in many data acquisition applications.

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