AD9649-80EBZ

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Evaluation boards are an increasingly popular way to investigate and develop electronic systems as they provide the user with a cost effective and efficient way to test and configure integrated circuits. The Analog to Digital Converter (ADC) evaluation board, or AD9649-80EBZ, is a digital-to-analog converter specifically designed for high speed, high resolution Analog-to-Digital conversion. This article will discuss the application field and working principle of this evaluation board.

The AD9649-80EBZ is a highly integrated, single-chip ADC designed for high speed and high resolution analog-to-digital conversion. The device supports a wide input range of – 0.2 V to + 5.1 V, enabling direct connection of low-level and high-level input sources. It uses an efficient, six-stage pipelined architecture which consists of a low-noise, twin-channel differential input amplifier, a dual-sampling channel, a harmonic rejection filter (HRF), and a 12-bit ADC. The ADC is designed using a proprietary low-noise architecture which can achieve a signal-to-noise ratio (SNR) of 88 dB at Nyquist, making it suitable for a variety of applications.

The AD9649-80EBZ is well suited for use in applications such as high speed sampling and high resolution signal processing. For instance, it is ideal for use in communications systems which require high speed data acquisition, such as digital signal processing, image processing, video signal processing, or for use in power line communication systems. It is also suitable for applications where low power consumption and high dynamic range are essential, such as in wireless receivers and optical receivers.

The AD9649-80EBZ combines an efficient design with state of the art performance. Its programmable input range and low power consumption make it suitable for a range of applications. Integrating the AD9649-80EBZ with other components provides a high speed, high resolution ADC at a low cost.

With regards to the working principle, the AD9649-80EBZ utilizes a six-stage pipelined architecture to achieve high speed and high resolution performance. The stages are described in more detail below.

The first stage is the Input Amplifier and Twin-Channel Differential Input which allows for signal conditioning and a x1 or x2 gain selection. This stage is followed by a dual-sampling channel for optimum input matching and signal restoration. The third stage is the Harmonic Rejection Filter (HRF) which provides a low-noise, flat frequency response for further signal processing and improved image rejection.

The next stage is the 12-Bit Analog-to-Digital Converter. This is a proprietary low-noise architecture which can achieve an SNR of 88 dB at Nyquist. The ADC supports multiple output options including single-ended error codes (binning) and differential non-linear codes. It also features advanced programming capabilities for increased resolution and improved image rejection.

The last stage of the AD9649-80EBZ is the Digital-to-Analog Converter (DAC) and Digital Output. This allows for programmable output amplification and can be configured for single-ended or differential data output. The output options can also be used for calibration or self-testing purposes.

The AD9649-80EBZ is an ideal solution for a wide range of high speed, high resolution data acquisition applications. Its programmable input range, low power consumption, and advanced features make it perfect for use in communications and signal processing systems as well as in wireless and optical receivers. The highly integrated design and efficient architecture provide high speed, high resolution performance at a low cost.

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