29.04.2013 Views

Here - TUM

Here - TUM

Here - TUM

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Memory and Hysteresis in Comparators<br />

Hysteresis:<br />

Switching threshold is different when switching from low to<br />

high and from high to low, respectively.<br />

Useful to avoid bouncing outputs for small (noisy) signals<br />

near comparator threshold<br />

Memory effect:<br />

Kind of hysteresis that causes the comparator decision to be<br />

dependent on previous decisions.<br />

Has to be strongly avoided in Nyquist rate ADCs such as<br />

flash converters.<br />

Stephan Henzler Mixed-Signal-Electronics 2012/13<br />

258

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!