AD7477AAKSZ-500RL7

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Analog-to-Digital Converters (ADCs) are essential for a wide range of data acquisition applications. The AD7477AAKSZ-500RL7 is a high performance, low power, 16-bit single-supply, successive approximation register (SAR) analog-to-digital converter (ADC) with a 5Msps max sample rate. This ADC is ideal for a variety of applications in the consumer, industrial, healthcare and audio markets, offering excellent ac and dc characteristics, wide dynamic range and low power operation.

Features

The AD7477AAKSZ-500RL7 features a low power supply range of 0.5V to 1.8V, with a maximum power consumption of 500mW. It combines an on-chip sample-and-hold circuit, track-and-hold circuit, and built-in reference clock to provide a great user experience with fast response time, low noise and low-power operation. Additionally, it features a digital temperature sensor and an on-chip calibration function which provides high accuracy and excellent stability.

The AD7477AAKSZ-500RL7 has a wide input voltage range of 0V to Vdd, with a maximum input voltage of 1.8V and a maximum input dynamic range of 24.6 dB. It has a differential nonlinearity (DNL) of ±1LSB and an Effective Number of Bits (ENOB) of 14.4. A built-in low-pass filter is also included to provide an anti-alias filter for better analog performance.

Applications

The AD7477AAKSZ-500RL7 is suitable for a wide range of low-power, high-performance data acquisition applications such as communication systems, medical imaging, industrial and consumer applications. It is ideal for applications that require multi-channel or high-speed sampling, and its great accuracy, low noise, and low power consumption make it a great choice for use in mobile and portable devices.

The AD7477AAKSZ-500RL7 is also ideal for audio/speech/instrumentation applications, as it provides a high dynamic range with low noise and distortion. It also eliminates the need for external clocks, as the built-in reference clock provides great stability and accuracy. Additionally, its low power consumption makes it perfect for battery-powered systems.

Working Principle

The AD7477AAKSZ-500RL7 is a 16-bit single-supply successive approximation register (SAR) analog-to-digital Converter (ADC) with a 5Msps max sample rate. It has an on-chip sample-and-hold circuit, track-and-hold circuit and built-in reference clock which all work together to provide high-speed sampling and conversion. The ADC works by utilizing a successive approximation algorithm to convert the analog input signal into a digital representation. The input signal is sampled periodically and converted into a digital word, which is then sent out through a multiplexer to the output.

The AD7477AAKSZ-500RL7 is also equipped with an on-chip calibration function which provides high accuracy and excellent stability. The calibration process begins when the ADC is powered up, and the digital values are converted into analog values by the on-chip digit-to-analog converter. This allows for any offset errors in the ADC to be calibrated out, resulting in higher accuracy and long-term stability. The calibration process is repeated periodically to maintain accuracy over time.

The AD7477AAKSZ-500RL7 also features a built-in low-pass filter in order to reduce noise and provide improved performance. The filter is used to remove any high-frequency components that may be present in the input signal in order to maintain signal stability and accuracy. With its high performance, low power consumption and wide dynamic range, the AD7477AAKSZ-500RL7 is ideal for a variety of data acquisition applications.

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