REV.-A
In the case of 1-2 phase excitation:
Figure 2-30 shows the excitation signal input circuit. When the Td terminal is LOW, the SLA702M can
cut off the output current. By using this function, the unaltered 2-phase excitation signal can cause the
1-2 phase excitation to be on
3/8ths
of the time, which is a suitable value.
Figure 2-31 shows the timing chart.
““’’’-r’”’
Figure 2-30. Phase Data Input Circuit (l-2 Phase)
INA
Ill
input
Ill
Ill
Ill
, .
TdA
;;
ii
4
—
-
II
t
d
a
h
—
II
~
—1111
I
—
PhaseA
i
~
~
~
;;
;
1!11
;;
I
I
1
I
QI
11213141516171
1,,,11111
Figure 2-31. Phasa Signal Timing Chart (l-2 Phase)
2-27
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