AD7893BNZ-10

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Data Acquisition - Analog to Digital Converters (ADC) have been integral in many applications and over the years, the technology has advanced, allowing for more intricate and complex designs. This has opened up many new possibilities for the use of ADCs and one example is the AD7893BNZ-10, a precision low-power 10-bit ADC. This article will cover its application field and working principle.

Application Field

The AD7893BNZ-10 is a 10-bit ADC designed for applications in the data acquisition and signal processing fields, including but not limited to: temperature sensing, motor control, remote sensing, process control, and medical systems. Its 10-bit resolution ensures higher signal fidelity and accuracy, while its low-power consumption greatly reduces the overall system power consumption. The AD7893BNZ-10 also features an integrated thermal shutdown circuit and an on-board reference voltage, further reducing system complexity and cost.

In terms of its real-world uses, the AD7893BNZ-10 has been used in projects involving light and temperature measurements, as well as recent research in geothermal energy and environmental monitoring. The wide range of sensing available to this ADC also makes it suitable for medical applications such as patient monitors, blood pressure monitors, and heart rate monitors. It can even be used in motor control circuits for robotics and industrial applications.

Working Principle

The working principle of the AD7893BNZ-10 revolves around analog to digital conversion. This process involves converting analog signals, like those from sensors and microphones, into digital signals that can be used by computerized devices. In the case of the AD7893BNZ-10, a 10-bit resolution is achieved by using an internal successive approximation register (SAR) and an internal reference voltage.

The internal SAR is responsible for comparing a given analog input to the internal reference voltage. The conversion process works by repeatedly comparing the input voltage to the reference voltage until the difference between them is as small as possible. This difference is then converted into a 10-bit digital code.

The internal reference voltage is generated by an on-board low-noise bandgap reference, ensuring higher accuracy and providing a stable reference voltage for the SAR logic. The AD7893BNZ-10 also features an integrated thermal shutdown circuit for additional protection. This circuit is designed to detect extreme temperatures, before shutting down the ADC in order to protect the device and circuit.

Conclusion

In conclusion, the AD7893BNZ-10 is a precision 10-bit ADC designed for many applications ranging from light and temperature sensing, to medical and industrial applications. Its integrated reference voltage and thermal shutdown circuit ensure higher accuracy and safety. Its low-power consumption also helps to keep overall system power consumption to a minimum. All of these features make this ADC a sound choice for many data acquisition and signal processing applications.

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