Non-linear slew rate limiter

Details Non-linear slew rate limiter Non-linear slew rate limiter

1993-02-16

1994-09-27

Wambach, Margaret Rose

Communications: electrical

Digital comparator systems

G06F 702

Patent

active

053510313

ABSTRACT:
A non-linear slew rate limiter for a digital signal compares the digital signal with a reference waveform that has a frequency spectrum that slightly exceeds the passband of a reconstruction filter within a digital to analog converter. Samples of the digital signal are compared with immediately prior samples of an output digital signal to determine the polarity of the slewing of the digital signal, and also are compared with corresponding next samples of the reference waveform to determine whether the slew rate of the digital signal exceeds the slew rate of the reference waveform. If the slew rate of the digital signal exceeds the slew rate of the reference waveform, the sample of the reference waveform replaces the corresponding sample of the digital signal in the output digital signal. Otherwise the sample of the digital signal becomes the output digital signal.

REFERENCES:
patent: 4432009 (1984-02-01), Reitmeier et al.

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