When implementing any type of signal chain, precision, accuracy, repeatability, and reliability are always crucial. In addition, aliasing, quantization noise, and switched capacitor input are always considerations for general-purpose signal chain design.
Latency performance, linearity, and noise are essential for data that requires time-domain analysis (such as sonar, CbM, motor control, and position monitoring). However, for frequency domain analysis (which includes audio, power quality measurement, and dynamic signal analyzers), bandwidth, noise, and total harmonic distortion receive the most emphasis when configuring the signal chain.
Time-critical data measurements, such as motor control, rotation/position monitoring, or analog I/O, require low-latency solutions. In addition, when phase accuracy across multiple channels is essential, as would be the case for DAQ instruments and power quality measurement, noise and dynamic range with total harmonic distortion must be addressed.
And for most practical applications, these requirements are combined. For example, a CbM system may use data from the same sensors for both time and frequency domain analysis, and there may be a need for phase accuracy across two or more channels. In addition, motor controls often need time-critical data suitable for time-domain analysis. Engineers often find it challenging to meet these multiple design requirements while still achieving precision, accuracy, repeatability, and reliability.