James C. Squire, Ph.D., P.E.

Digital to Analog Coverters

Device

bits

data1

Vlow2

Vhigh3

multiplying4

Tconversion

AD557

8

parallel

0V

2.56V

no

1us

DAC03830

8

parallel

-10V5

10V5

yes6

1us

 

 

 

 

Notes

  1. The data bus may be serial or parallel loading.
  2. The lowest possible voltage out, corresponding to an input of 00H.
  3. The highest possible voltage out.
  4. A multiplying D-A converter multiplies the analog output by a provided analog input.  A 4 quadrant multiplier permits either the digital input or the analog multiplicand to be positive or negative.  Usually the multiplier feature can be easily disabled if not desired.
  5. The output may be either configured to be a current or a voltage signal, and may be adjusted to provide minimum and maximum outputs anywhere in the -10V to +10V range.
  6. Four quadrant, -10V to +10V.