AK2572 Datasheet, PDF (32/50 Pages) Asahi Kasei Microsystems – APC for Burst Mode Applicable Direct Modulation Laser Diode

ASAHI KASEI
8.4 At TXDIS Detection / Release
TXDIS detection / release sequence is shown in Figure 8-4.
Figure 8-4 TXDIS Detection / Release Sequence
[AK2572]
VDD
TXDIS
TXFAULT
LD Current
10μs [Min.]
Both of the temperature at
Rising and Falling edge of
TXDIS signal are compared
TXFAULT disable
TXFAULT operation when accelerated
start-up sequence is selected is same as that
when no temperature difference exists
TXFAULT enable without OPTALM
No temperature
difference exists
TXFAULT with OPTALM enable
2ms [Typ.]
APC Feedback
Normal operation
t_off＜10μs
t_on＜1ms
APC FB initial procedure
t_init:160ms[Typ.]
Temperature
difference exists
TXFAULT with
OPTALM enable
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< MS0290-E-01>
2004/8