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en:adcdual [2018/12/20 13:36] fluktuaciaen:adcdual [2018/12/28 13:43] fluktuacia
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-FIXME **This page is not fully translated, yet. Please help completing the translation.**\\ //(remove this paragraph once the translation is finished)//+====== Analog-to-digital converter - ADCdual01A ======
  
-====== Analog-to-digital convertor - ADCdual01A ====== +A fast two-channel analog-to-digital converter. Input connector is a differential SATA connector - one for both analog channels. Output connector is a serial-parallel LVDS output to differential SATA connector:
- +
-A fast two-channel analog-to-digital convertor. Input connector is a differential SATA connector - one for both analog channels. Output connector is a serial-parallel LVDS output to differential SATA connector:+
  
 {{:cs:modules:adc:adcdual01a_bottom_big.jpg?600|}} {{:cs:modules:adc:adcdual01a_bottom_big.jpg?600|}}
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   * Sampling jitter < 100m   * Sampling jitter < 100m
  
-Currently, the problem is tackled on a professional level by proprietary digitising units (([[http://arxiv.org/abs/1305.3550|LOFAR]])) or more in amateur conditions by a system of multichannel sound cards (([[http://fringes.org/|Fringe Dwellers "Simple"]]))(([[http://radiojove.gsfc.nasa.gov/|Radio JOVE Project]])). +Currently, the problem is tackled on a professional level by proprietary digitising units (([[http://arxiv.org/abs/1305.3550|LOFAR]])) or in more amateur conditions by a system of multichannel sound cards (([[http://fringes.org/|Fringe Dwellers "Simple"]]))(([[http://radiojove.gsfc.nasa.gov/|Radio JOVE Project]])). 
  
 === Choice of ADC === === Choice of ADC ===
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 either [[http://www.linear.com/product/LTC2271|LTC2271]] or products from the [[http://www.linear.com/product/LTC2191|LTC2190-2195]] series. either [[http://www.linear.com/product/LTC2271|LTC2271]] or products from the [[http://www.linear.com/product/LTC2191|LTC2190-2195]] series.
  
-As can be seen, the whole ADC series from Linear technology is more or less the same (the converters are even mutually interchangeable between the PCB), they only differ in sampling frequency and S/N ratio. The slowest one of them (je pro 20 MHz). The slowest sampling rate that it is able to carried out is 5 MSPS. All converters from this category are more or less configurable and all ADCs’ (even other than made by Linear Technology) have SPI interface for configuration.+As can be seen, the whole ADC series from Linear technology is more or less the same (the converters are even mutually interchangeable between the same PCB layout), they only differ in sampling rates and S/N ratio. The slowest one of them can be used for sampling rate of 20 MHz. The slowest sampling rate that it is able to carried out is 5 MSPS. All converters from this category are more or less configurable and all ADCs’ (even others than made by Linear Technology) have SPI interface for configuration.
  
 ===== Related sites ===== ===== Related sites =====
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   * [[http://rtcmagazine.com/articles/view/101915|PX1500-2]]   * [[http://rtcmagazine.com/articles/view/101915|PX1500-2]]
  
-There are several problems with these devices - especially their high price, unnecessarily high sampling frequency and small dynamic range or, on the contrary, large dynamic range, but extremely low sampling frequency.+There are several problems with these devices - especially their high price, unnecessarily high sampling rates and small dynamic range or, on the contrary, large dynamic range, but extremely low sampling rates.
en/adcdual.txt · Last modified: 2018/12/28 13:43 (external edit)