{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

comparators

# comparators - Comparatordesign(detailsinChapter7 ECE412...

This preview shows pages 1–5. Sign up to view the full content.

Adaptive Integrated Microsystems Comparator design  (details in Chapter 7) ECE 412 Introduction to mixed-signal circuits (Fall 2007) Class website: http://www.egr.msu.edu/classes/ece412/shantanu

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Adaptive Integrated Microsystems Importance of a comparator A comparator compares two ANALOG signals and produces a boolean (binary) output. Op-amps in an open loop configuration are typically used for comparing analog signals. Requires very high gain (precise value of the gain is not important) !!!! Accuracy of a comparator is determined by its OFFSET VOLTAGE. + - + in V - in V V V out 3 . 3 = 5 . 1 + 499 . 1 +
Adaptive Integrated Microsystems Origin of Offset Voltage 6 ds I 7 ds I 0 = out I

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Adaptive Integrated Microsystems Op-amp Offset voltage ) ( - + - = in in v out V V A V + - + in V - in V out V Non-ideal case: off in in V V V + = - + then 0 = out V Offset voltage - + = in in V V Ideal : then 0 = out V Assumes symmetry - + out V - in V + in V off V ) ( off in in v out V V V A V + - = - +
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 23

comparators - Comparatordesign(detailsinChapter7 ECE412...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online