MAX11646EUA+T

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Data acquisition is a process in which information is gathered in a digital form from analog sources such as sensors or transducers. Analog to digital converters (ADC) is one of the important elements in the data acquisition system, which translates analog signals from sensor into digital signals for further processing. MAX11646EUA+T is a high speed 16-bit SAR ADC designed for automotive applications, which utilizes an advance architecture to deliver a signal conversion rate of up to 500ksps at one channel and with signal-to-noise ratio (SNR) of up to 99.6db. In this article, we will discuss the application field and working principle of MAX11646EUA+T.

Application Field

MAX11646EUA+T is a perfect choice for automotive applications, such as engine control and powertrain control. This chip can provide high precision and fast speed for A/D converters for various automotive system requirements. Besides, MAX11646EUA+T is also suitable for applications like medical imaging, instrumentation, communications, and general industrial process control.

Working Principle

MAX11646EUA+T utilizes SAR (Successive Approximation Register) architecture to achieve the fast conversion time and best possible SNR performance. It works as follows: The SAR converter starts with mid-code and compare the input analog voltage with the output digital code produced by DAC. This process is repeated by the SAR logic keeping in mind the digital output code and then the digital output code produced by the DAC every time. After completing this process i.e. comparison, if the analog voltage is greater then what the output digital code generated by DAC then the DAC code is added in the DAC register and the comparator request a negative code change and vice versa. The SAR converter will end with the DAC code when it matches the analog input voltage and the data will be available as a 16-bit output after one single conversion. In addition, it also provides GPIOs for asynchronous control of the sampling sequence.

Conclusion

MAX11646EUA+T is an ideal choice for automotive and other applications. Its fast conversion rate and SNR ratio makes the chip perfect for the demand of nowadays A/D converters. With its advanced SAR architecture, MAX11646EUA+T can be used to convert analog inputs into digital signals for further processing.

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