ITWissen.info - Tech know how online

R-2R converter

The R-2R converter is a D/A converter that uses a resistor matrix as a voltage divider. The individual resistors of the matrix are switched on and off for the conversion with electronic switches. The output voltage is proportional to the binary digital signal

.

Block diagram of the R-2R converter

Block diagram of the R-2R converter

In contrast to the weighted resistor converter, where the resistor values correspond to 2, 4, 8 and 16 times the base resistance, the R-2R converter has only two resistor values "R" and "2R". The latter, however, several times, since the voltage division for the 4-, 8- and 16-fold values are created from them. This is done by connecting or disconnecting several resistors simultaneously in the voltage divider. The R-2R converter is the most frequently used D/A converter.

Informationen zum Artikel
Englisch: R-2R converter
Updated at: 28.12.2008
#Words: 89
Links:
Translations: DE