AD9248BCPZ-65

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Data acquisition is an important process for a wide range of engineering and scientific applications, especially in control applications. In the realm of data acquisition, analog to digital converters (ADC) are essential devices to build the connection between analog and digital signals. The AD9248BCPZ-65 is a 12-bit, 65 MSPS Serial LVDS ADC. This ADC is designed to satisfy the need for wide dynamic range and good linearity performance over an extremely wide operating frequency range. This application field and working principle are described in this article.

Overview of ADC

ADC is an electronic device which converts an analog signal, such as a sound or voltage, into a digital signal which can be read and manipulated by a computer. Generally, an ADC works in 3 steps: sampling, quantization and coding. During Sampling, the analog signal is measured at a set rate (known as the sampling rate), and an equivalent digital value is generated from it. The digital value is then quantized, which is the process of assigning digital codes to different analog ranges and grouping them into levels. The converted digital signal is encoded into a specific digital format, making it easier for the computer to recognize and interpret the signal.

Application Field

The AD9248BCPZ-65 is a 12-bit, 65 MSPS serial LVDS ADC designed to provide high dynamic range with good linearity performance over a wide operating frequency range. This device is suitable for use in a variety of applications such as wireless communications, instrumentation, communication systems, medical imaging systems, and automotive electronics. This ADC is capable of a 40MHz -60MHz input bandwidth which allows for a wide range of signal analysis and sampling. The AD9248BCPZ-65 has a data rate of up to 65 MSPS, with a wide power supply range from 3.3V to 1.8V and a smaller package size of VQFN-16. Moreover, the ADC supports low power consumption and high signal-to-noise ratio (SNR). This makes it the ideal choice for signal acquisition applications.

Working Principle

The AD9248BCPZ-65 uses analog signal conditioning topology with a two-stage amplifying circuit and a controlled-gain amplifier (CGA). The CGA amplifies the signal and helps to reduce noise. The two-stage amplifying circuit provides the adjustable range of gain that can be optimized to increase dynamic range performance such as SNR and image response. After the analog signal is conditioned, it is passed to the AD9248\'s high-resolution digital processing circuits. The input signal is oversampled and converted into digital words. The internal digital signal processing circuit uses an optimized delta-sigma modulator topology to convert analog signal into digital word. After which, the digital signal is passed through a digital filter for further processing and then output as a digital signal.

Conclusion

In summary, the AD9248BCPZ-65 is an advanced 12-bit, 65 MSPS serial LVDS ADC designed to provide high dynamic range with good linearity performance. It can be used in various signal acquisition applications such as wireless communications, instrumentation, communication systems, medical imaging systems, and automotive electronics. It has a wide operating frequency range, a wide input bandwidth, a high data rate, a low power consumption, and a high signal-to-noise ratio. Furthermore, the device utilizes a two-stage amplifying circuit with a controlled-gain amplifier to provide adjustable range of gain that can be optimized to increase dynamic range performance. All in all, the AD9248BCPZ-65 is a powerful ADC that is an ideal solution for signal acquisition applications.

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