Adc Bit Error Rate
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Bit Error Rate Measurement
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In electronics, an analog-to-digital converter (ADC, A/D, A–D, or A-to-D) is a system that converts an analog signal into a digital signal. A digital-to-analog converter (DAC) performs the reverse function. An ADC may also provide bit error rate tester software an isolated measurement such as an electronic device that converts an input analog bit error rate testing voltage or current to a digital number proportional to the magnitude of the voltage or current. Typically the digital
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output will be a two's complement binary number that is proportional to the input, but there are other possibilities. There are several ADC architectures. Due to the complexity and the need for http://ieeexplore.ieee.org/iel5/4/4359912/06214991.pdf?arnumber=6214991 precisely matched components, all but the most specialized ADCs are implemented as integrated circuits (ICs). Contents 1 Explanation 1.1 Resolution 1.1.1 Quantization error 1.1.2 Dither 1.2 Accuracy 1.2.1 Non-linearity 1.3 Jitter 1.4 Sampling rate 1.4.1 Aliasing 1.4.2 Oversampling 1.5 Relative speed and precision 1.6 The sliding scale principle 2 ADC types 3 Commercial 4 Applications 4.1 Music recording 4.2 Digital signal processing 4.3 https://en.wikipedia.org/wiki/Analog-to-digital_converter Scientific instruments 4.4 Rotary encoder 5 Electrical symbol 6 Testing 7 See also 8 Notes 9 References 10 Further reading 11 External links Explanation[edit] The conversion involves quantization of the input, so it necessarily introduces a small amount of error. Furthermore, instead of continuously performing the conversion, an ADC does the conversion periodically, sampling the input. The result is a sequence of digital values that have been converted from a continuous-time and continuous-amplitude analog signal to a discrete-time and discrete-amplitude digital signal. An ADC is defined by its bandwidth and its signal-to-noise ratio. The bandwidth of an ADC is characterized primarily by its sampling rate. The dynamic range of an ADC is influenced by many factors, including the resolution, linearity and accuracy (how well the quantization levels match the true analog signal), aliasing and jitter. The dynamic range of an ADC is often summarized in terms of its effective number of bits (ENOB), the number of bits of each measure it returns that are on average not noise. An ideal ADC has an ENOB equal to its resolution. ADCs are chosen to match the bandwidth and required signal-to-noise ratio
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