Phase Margin Degradation from Digital Filter Latency in Control Loops
Digital filter latency introduces pure time delay into feedback loops, eroding phase margin at crossover frequencies by 360 degrees per cycle of propagation delay.
Phase Delay and Filter Lag Introduced by Capacitive Pressure Transducer Retrofits
Retrofitting capacitive pressure transducers introduces hydraulic dead-volume delay and digital ASIC filter lag that erodes control loop phase margin.
Internal Reference Voltage Droop under External Analog Loading
External analog load currents extract direct current and charge pulses from internal bandgap reference nodes, inducing static droop and transient conversion errors.
Quantifying Phase Margin Loss from Cascaded Sinc and Boxcar Filter Window Delay
Cascaded sinc and boxcar filter window delays introduce deterministic group delays that subtract directly from control loop phase margin at crossover frequencies.
Analog Output Loading Effects on Internal Precision Voltage References
External loading on internal voltage references degrades system precision through load droop, substrate thermal gradients, and capacitive loop instability.