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Choose the right data converter for your application

Choose the right A/D converter for your applicationAgenda Analog-to-Digital-Converters (ADCs) What are the Signal Frequencies Analog Classes of applications Frequency ranges of ADCs Nuts and Bolts of delta - sigma Converters The SAR ADC The High-speed Pipeline Topology Digital-to-Analog-Converters (DACs) R-2R-DACs String-DACs Multiplying DACs delta - sigma DACs High-Speed Current-Steering DACsReal World vs. BandwidthBandwidth (Hz)Noise Free Resolution (bits)1101001k051015202510k100k1 MTempPressureLoadFlowLevelDisplacement/P roximityPhoto Sensing10M100 MCommunicationsDefenseImagingTest & Measurement1 GADC Architectures There are many different ADC Architectures Successive Approximation (SAR) delta - sigma ( ) Pipeline (Flash) delta - sigma converters determine the digital word by Oversampling Applying Digital Filtering SARs determine the digital word by Sampling the input signal Using an it

Delta Sigma Or Sigma Delta (Oversampling) SAR Successive Approximation Conversion Rate 10 10K 100K 1M 10M 100M100 1K 24 20 16 12 8 Converter Resolution (bits) ADC Technologies

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