Typical Applications (Continued)
Self-Clocking in Free-Running Mode
DS005671-65
*After power-up, a momentary grounding of the WR input is needed to
guarantee operation.
µP Interface for Free-Running A/D
DS005671-66
Operating with “Automotive” Ratiometric Transducers
DS005671-67
*V
IN
(−)
=
0.15 V
CC
15
%
of V
CC
≤V
XDR
≤85
%
of V
CC
Ratiometric with V
REF
/2 Forced
DS005671-68
µP Compatible Differential-Input Comparator with Pre-Set V
OS
(with or without Hysteresis)
DS005671-69
*See
Figure 5
to select R value
DB7
=
“1” for V
IN
(+)
>
V
IN
(−)+(V
REF
/2)
Omit circuitry within the dotted area if
hysteresis is not needed
ADC0801/ADC0802/ADC0803/ADC0804/ADC0805
www.national.com11
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