For example, if the maximum range of a waveform is 1 and the minimum is 1, the full-scale range for the waveform is 2. full-scale range (pk-pk) specifies the total peak-to-peak range, or the difference between the minimum and maximum, for the digital waveform or digital data. This continues until the conversion of the analog point is complete.įor more information on the different types of ADCs, please refer to the Related Links section below. digital waveform is the waveform you want to convert to analog waveform. If low, the digital bit is set to low, or 0 in binary, then moved to the next bit. If greater, the digital bit is set to high, or 1 in binary, then moved to the next bit. In the description of the SAR type of ADC, a binary algorithm to convert analog waveform into discrete outputs means that each analog point is checked for being greater than or less than a digital reference point.
National instruments analog to digital converter series#
Not all the NI 92xx C Series devices and modules are using a DSA type of ADC because only C Series devices and modules for highly accurate measurements are using a DSA type of ADC, such as thermocouple (NI 9211, 9212, 9213), RTD (NI 9217), high voltage and current (NI 9225, 9227, 9229, 9239, 9242, 9244), DSA (NI 9232, 9234), bridge-based measurements (NI 9235, 9236, 9237), and universal (NI 9219). Learn more about the DSA ADC here: Benefits of Delta-Sigma Analog-to-Digital Conversion.Īdditional InformationNot all the NI 61xx S Series devices and modules are using a SAR type of ADC because some NI 61xx S Series devices and modules are using a pipelined ADC. These features allow to be used for vibration and audio signal analysis as well as strain and pressure measurement. Additionally, it is free-running meaning it’s being sampled prior to any trigger conditions. The DSA type of ADC utilize oversampling, decimation filter, and noise shaping to create high resolution and great anti-aliasing filtering applications. Also, It utilizes a binary algorithm to convert continuous analog waveform into much smaller discrete outputs. It takes in a continuous analog signal into a discrete format utilizing an approximation register. The SAR type of ADC is used in most National Instruments Multifunction I/O DAQ devices, not necessarily the case for modular instruments and USB devices. 1.1 Product Overview and Scope of Analog-to-Digital Converter Chips 1.2 Analog-to-Digital Converter Chips Segment by Bit 1.2.1 Global Analog-to-Digital Converter Chips Market Size Growth Rate Analysis by Bit 2021 VS 2027 1.2.2 8-bit 1.2.3 10-bit 1.2.4 12-bit 1.2.5 14-bit 1.2.6 16-bit 1.2.7 32-bit 1.2.8 Others 1.3 Analog-to-Digital Converter. NI 92xx C Series devices and modules (Not all).NI 61xx S Series devices and modules (Not all) The successive-approximation-register (SAR) Analog-to-Digital Converter (ADC) is the type used in most National Instruments Multifunction DAQ devices (not necessarily the case for modular instruments and USB devices).SolutionThere are two main types of ADC used in National Instruments DAQ Devices, SAR(Successive-Approximation-Register) and DSA(Delta-Sigma ADC).
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