AD7928BRUZ-REEL

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Data Acquisition - Analog to Digital Converters (ADC)

The AD7928BRUZ-REEL is an analog-to-digital converter (ADC) designed by Analog Devices. It is a 10-bit simultaneous sampling ADC with 20 identical input channels, a sampling frequency of 500KHz, differential input range of 3V, data acquisition resolution of 1µV and a sample and hold time of 0.3µs. It operates on a single 5V power supply with a maximum total current consumption of 4.2mA.

Application Field of AD7928BRUZ-REEL

The AD7928BRUZ-REEL provides simultaneous sampling of up to 20 input channels. This makes it suitable for numerous applications, including digital weigh scales, multichannel data acquisition, automotive diagnostics, military communication systems, robotics, and ultra-low-noise applications. Additionally, it is ideal for medical devices, ultrasound machines, and isolated power supplies because of its isolated power supply architecture.

Working Principle of AD7928BRUZ-REEL

The AD7928BRUZ-REEL utilizes a successive approximation ADC technique. The analog signal is first converted into a digital form by a sampling circuit. The sampling circuit samples and holds each input voltage, and then the successive approximation comparator measures the voltage in order to provide a digital output code. The system works by comparing the input voltage to successive approximation reference levels, one bit at a time. When the comparator output changes from high-low or low-high, the next bit is set. The process is repeated until the conversion is finished.

The AD7928BRUZ-REEL also incorporates noise shaping techniques to improve its noise and distortion performance. This process reshapes the quantization noise so that it is shifted to high frequencies and thereby filtered out. This provides for a higher dynamic range and improved distortion ratios.

Conclusion

In conclusion, the AD7928BRUZ-REEL is an ideal ADC for a variety of applications due to its 20-channel simultaneous sampling and its capability of operating at a high frequency of 500KHz. It is also extremely low-noise, making it adaptable to many different signal types. Its versatile features allow it to be used in data acquisition systems, automotive systems, medical devices, and many other areas.

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