AD7828LRS-REEL

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Data Acquisition is the process of sampling and converting signals from a physical environment, such as electrical, mechanical, or acoustic systems, into a convenient, compatible digital or analog form that can be used and measured by a computer or other processing device. Analog to Digital converters (ADCs) are devices used in data acquisition systems to convert analog inputs, such as temperature, physical force, or velocity, into digital form. AD7828LRS is a low-power, rail-to-rail, 12-bit Analog to Digital converter that is well-suited for applications requiring an intermediate degree of accuracy and resolution, such as in medical diagnostics and industrial process control systems.

Application Field

The AD7828LRS-REEL is intended for a variety of signaling applications, such as medical imaging, process automation, instrumentation, and data acquisition and control systems. The device is ideal for analog-to-digital conversion and multi-channel, high resolution signal processing, with low power and small size.

The main application field of AD7828LRS-REEL is in medical diagnostics.Its features make it reliable for applications requiring intermediate accuracy and resolution such as pulse-rate monitors, oxygen level monitors, and glucose level detectors. The device offers excellent noise immunity, superior accuracy, and reliability in most medical imaging applications.

Working Principle

The AD7828LRS-REEL converts analog input signals into digital signals using a 12-bit delta-sigma (ΔΣ) A/D converter. The input is supplied with a three-state digital isolation amplifier, while the output is channeled through a digitally controlled switched resistor network to generate a 12-bit parallel output. The device is powered by a single +5V power supply and performs differential non-linearity (DNL) of up to ± 0.4LSB for the full-scale range (FSR).

In addition, the device is designed with a logic shutdown pin, which allows the converter to be put into a low power state. This helps make the device suitable for battery-operated systems as well as saving power in static applications. The device is also designed to have a relatively low dynamic power consumption for a range of temperatures and over a wide supply voltage range.

The AD7828LRS-REEL has near-zero propagation delay, making it suitable for applications that require speed. It is capable of sampling rates of up to 200 ksps, and it also offers a Rail-to-Rail input range, ensuring that signals at the bottom and top of the input range are accurately converted. The device also includes a track/hold amplifier that ensures accuracy and stability over a wide temperature range.

Conclusion

The AD7828LRS-REEL is a low-power, rail-to-rail, 12-bit A/D converter that is well-suited for applications requiring an intermediate degree of accuracy and resolution. It is ideal for analog-to-digital conversion and multi-channel, high resolution signal processing in medical diagnostics, process automation, instrumentation, and data acquisition and control systems. The device features low power consumption, near-zero propagation delay, and a Rail-to-Rail input range for superior accuracy.

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