![]() ![]() Each stage consists of a sample and hold circuit, an m-bit ADC (e.g., a flash converter), and an m-bit digital-to-analog converter (DAC). Pipeline architecture overcomes some of the limitations of flash architecture by dividing the conversion task into several consecutive stages. Consequently, flash ADCs are faster than SAR ADCs, but require a greater number of comparators. With flash, ADCs use a set of 2 n-1 comparators to measure an analog signal to a resolution of n bits. Flash, or parallel, architecture uses multiple comparators and a single conversion cycle. SAR architecture uses a single comparator and multiple conversion cycles. Successive-approximations register (SAR) and flash are two common architectures for analog-to-digital converter chips. To cover a broad range of performance needs, ADCs are available in different resolutions, bandwidths, accuracies, packaging, power requirements, and temperature ranges. Analog-to-digital converter chips are used in a variety of applications, including data-acquisition, communications, instrumentation, and signal processing. ![]() ADCs receive analog input, perform calculations on the analog signal, and then digitally encode the output in a format that computerized systems can process. Analog-to-digital converter chips (ADCs) transform information from analog to digital form. ![]()
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