ADS7254IPWR

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Data Acquisition - Analog to Digital Converters (ADC): ADS7254IPWR application field and working principle

Analog to Digital Converters (ADC’s) are used to convert analog signals to digital signals and ADS7254IPWR is a single-chip data acquisition system designed to capture analog input signals with an onboard 16-bit ADC. This device has low operational power and excellent noise immunity, allowing it to be used in low-power applications, such as mobile devices. This article will discuss the application fields and working principle of the ADS7254IPWR.

Application Field

The ADS7254IPWR is ideally suited for data acquisition applications which require low power and excellent noise immunity. It offers a wide range of features, including:

• Low power—0.8 mW The ADS7254IPWR is designed for use in mobile and other battery-powered applications. It does not draw a large amount of current, making it an ideal choice for applications needing to preserve battery life.
• Excellent noise immunity— The device has a built-in EMI shielding and energy harvesting power management to help mitigate EMI noise from the surrounding environment.
• High resolution—The device is capable of capturing 16-bits of data for analog signal conversion.
• Wide voltage range—The device can operate from 1.8 V to 5.5 V, allowing it to be used with a range of power sources.

These features make the ADS7254IPWR well-suited for a variety of data acquisition applications, such as motion detection, light detection, temperature measurement, and pressure measurement.

Working Principle

The ADS7254IPWR is an integrated circuit composed of several components, including a 16-bit analog to digital converter, a voltage regulator, and a Digital I/O multiplexer. The device also includes an on-chip power management module, a reference voltage generator, and a charge pump.

The ADC within the device is the main component of the device, and is responsible for converting analog signals into digital signals. The ADC utilizes a ramped input voltage to sample the incoming signal. An internal reference voltage is used to convert the ramped input voltage into a 16-bit number, which is then digitized by the internal conversion hardware.

The Data I/O multiplexer is used to allow the device to communicate with the external environment via serial interfaces. It is also used to allow for several commands to be issued to the device. This can be used for configuring the device and modifying operating parameters.

The power management module is used to regulate the power supplied to the device and to detect any changes in the supply voltage. The device is designed to be power efficient, so the power management module can be used to reduce the current draw from the supply.

The reference voltage generator is used to create a reference voltage for use by the ADC. This reference voltage is used to adjust the sensitivity of the ADC, allowing it to capture signals of varying amplitudes.

Finally, the charge pump is used to increase the number of voltage levels available to the ADC. This allows the ADC to recognize more precise voltage levels, allowing it to more accurately convert analog signals into digital ones.

Conclusion

The ADS7254IPWR is a single-chip data acquisition system designed to capture analog input signals with an onboard 16-bit ADC. It is ideal for data acquisition in low power applications due to its low operational power, excellent noise immunity and wide voltage range. The device contains several components, including an ADC, a voltage regulator, a Digital I/O multiplexer, a power management module, a reference voltage generator, and a charge pump. All of these components work together to enable the device to convert analog signals into digital signals.

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