AD7172-2BRUZ

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Analog to digital converters (ADC) are integrated circuits or systems which convert analog signals into corresponding digital equivalents. Data Acquisition (DAQ) systems use such ADC to collect and transmit data from physical phenomena. The AD7172-2BRUZ is an example of a data acquisition integrated circuit belonging to the AD7172 family. It is a low noise, dual channel, simultaneous sampling capacitor-based SAR (Successive Approximation Register) ADC.

The AD7172-2BRUZ has two on-chip 500 kHz sample-and-hold circuits and two independent successive approximation registers which sample and hold each channel synchronously. This feature allows simultaneous sampling of both channels and reduces the settling time. With a dynamic range of 75 dB and a low distortion factor of -108 dB (BAZ), the device can accurately sample analog signals accurately without noise and distortion.

The working principle of this ADC is based on the SAR method. It works on the basis of successive approximation where a sampled analog input is compared successively to a set of reference voltages. The digital output is obtained in the form of the binary code representing corresponding analog input. The sampling is performed in two phases, the first phase involves sample-and-hold switch that captures the analog input and the second phase involves the successive approximation process.

The AD7172-2BRUZ is well-suited for applications such as data acquisition systems, wireless RF signal processing, video and imaging systems and automotive test equipment. It is a single-supply device, operating at a maximum voltage of 2.7V, making it useful for battery operated systems. The device features an Auto-Power-Down mode reducing power consumption to 0.45mW. The device also includes a CleanSwitch™ Mode which enables the SAMPLE signals to transition quickly and accurately, enabling higher sampling throughput. Another feature of the device is Low Offset Error which helps ensure better linearity, accuracy and repeatability in signal acquisition.

The AD7172-2BRUZ is an example of an ADC device which provides great flexibility for data acquisition system design. It is powered by a single-supply voltage, requires no separate reference clock, has low power consumption and offers excellent linearity, accuracy and repeatability. With its integrated CleanSwitch Mode and Low Offset Error, it can handle a wide range of applications and is suitable for battery operated systems. It is well-suited for applications such as data acquisition systems, wireless RF signal processing, video and imaging systems and automotive test equipment.

In conclusion, the AD7172-2BRUZ integrated circuit is a data acquisition device which provides great flexibility in terms of analog signal collection and transmission, with low power dissipation and excellent linearity, accuracy, and repeatability compared to other ADC devices. It is suitable for a number of applications, including data acquisition systems, wireless RF signal processing, video and imaging systems, and automotive test equipment.

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