EVAL-AD7091R-8SDZ

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The EVAL-AD7091R-8SDZ is a 32-bit analog to digital converter (ADC) evaluation board for use with the Analog Devices AD7091R-8SDZ series of high speed, low power, low latency, Delta-Sigma ADCs. This evaluation board is designed for automotive, industrial and medical applications and makes use of the ADI AD7091R-8SDZ’s on-chip thermal shutdown and power-saving modes to improve system reliability and reduce its power consumption. The board incorporates both low power and high voltage supply rails making it suitable for a wide range of applications.

Features of the EVAL-AD7091R-8SDZ

The EVAL-AD7091R-8SDZ is a flexible and reliable evaluation board that offers a range of features.

• A low voltage and low power supply option (3.3 V and <1W)
• Integrated on-board reference to enable accurate measurements in 16-bit and 18-bit modes
• A full range of analog and digital input and output connectors
• Full-featured SPI interface for ease of connection to a microcontroller

Working Principle of the EVAL-AD7091R-8SDZ

The EVAL-AD7091R-8SDZ utilizes a delta-sigma conversion topology. This topology comprises a one-bit sigma-delta modulator (SDM) and an integrated digital filter to achieve high resolution and accuracy. The SDM samples the analog input signal, converts it to a digital signal, and transfers it to an internal digital filter. The digital filter removes noise, eliminating the need for pre- or post-conditioning of the analog signal. The output of the filter is the digital equivalent of the input signal.

Application Field of the EVAL-AD7091R-8SDZ

The EVAL-AD7091R-8SDZ is suitable for use in a wide range of applications, including automotive, industrial and medical systems. Automotive systems could use the board for applications such as engine management, speed/position sensing, accelerometer measurements and battery monitoring. Industrial applications include motor control, process monitoring, load monitoring, and environmental monitoring. In medical applications, the board is suitable for blood flow monitoring, ECG acquisition, and patient monitoring.

Conclusion

The EVAL-AD7091R-8SDZ is a highly versatile and reliable evaluation board for the AD7091R-8SDZ series of ADCs. Its low power and wide operating temperature range make it ideal for automotive, industrial, and medical applications. Its delta-sigma architecture and onboard reference make it a powerful and accurate solution for applications requiring accurate conversion of analog signals to digital values.

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