AK2571 Datasheet, PDF (16/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

AKM Confidential
AK2571
4.2 PID control
Figure 4-2 explains the block diagram for PID control and table 4-3 indicates the parameter setting range
Figure 4-2 PID control
Target temperature
(R_TMPRT_TRGT)
Temperature data
(R_TMPRT_CRNT)
-
Z ^-1
+
E_PID_D
Differencial
Parameter
(D)
E_PID_P
Proportion
Parameter
(P)
E_PID_I
Integration
Parameter
Σ
(I)
PID control value
(R_PID_VALABS)
+
PID integration
value
(R_PID_INTGRL)
Table 4-3: PID parameter setting range
Parameter
EEPROM
Min.
Proportion
E_PID_P
0
Integration
E_PID_I
0
Differential
E_PID_D
0
Default
8
7/256
6/256
Max.
255
255/256
255/256
<Rev. 0.6E Preliminary>
-16-
2001/11