Programming instructions

 National Instruments Corporation 10-1 Multisim Component Reference Guide
Chapter 10
Mixed Components
10.1 ADC DAC
An ADC is a special type of encoder that converts the input analog voltage to an equivalent
output digital word.
10.1.1 Characteristic Equation
The V
in
input is the analog voltage input. The voltage at V
ref+
and V
ref
- pins set up the full-scale
voltage. The full-scale voltage is given by:
To start the conversion, the SOC pin should be driven high. This pulls the EOC pin low,
signifying that a conversion is taking place. The conversion takes 1 µS to complete and the
EOC pin is pulled high when it is completed. The output digital data is now available at pins
VVfs ref ref=−+− V
ComponentRef.book Page 1 Thursday, December 7, 2006 10:12 AM