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ADCs for Simultaneous Sampling


关键词: simultaneous sampling ADC, analog to digital converters, ADCs, analog digital, MAX126, MAX126, MAX115, MAX116, T/H, MUX, simultaneous sampling, motor control, I/Q sampling, wireless, I/Q, Coriolis, Mass-flow, power fault


Abstract: Multichannel analog-to-digital converters (ADCs) typically convert each input channel sequentially using an input multiplexer. Certain applications require simultaneous conversions, especially when phase information exists between different channels. For example, wireless applications require I and Q channels to be converted at the same instance, motor control and power monitoring requires voltage and current measurements and the phase angle between them. In the past, simultaneous sampling meant the designer had to use multiple ADCs, and perform parallel conversions on each channel. Simultaneous sampling ADCs now perform the task using multiple T/H to sample the inputs at the same instant, then perform the conversion for each channel. 



 ADCs for Simultaneous Sampling.pdf