AK2571 Datasheet, PDF (2/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

AKM Confidential
Block Diagram
AK2571
AK2571 - Block Diagram -
RB (12k) BIAS
BIAS GEN
Monitor
PD
PDMON
Gain Adj
RPD PDIN
CPD
REFOUT
Regulator
EEPROM
Store the
parameter and
look up table
Rth
TEMPIN Gain &
OFFSET
Adj
RL
ADC
T-V
Conv.
WAVE1
WAVE0
SHUT_APCN
SHUT_ATCN
OSC
Digital I/F
MODE
STATUS
CSN SKN DI DO READY REG EEP
I-DAC1
IOUT1
IOUT2
APC
I-DAC2
I-DAC3
IOUT3
Driver
+
LD
Alarm Decision
STATUS_MON
TIMERALM
OPALM(Optical out down)
CUALM(Over Current)
TEMPALM(Temperature ALM
PIDALM(TECControl current ALM)
WLALM(Target Temperature ALM)
HEATP
PWM
or
COOLP
PID
Current
TEC
direction
control
COOLN
HEATN
Monitor
DAC
AMON
IOUT4H
I-DAC4
IOUT4C
Curret
Amp/
Bypass
<Rev. 0.6E Preliminary>
-2-
2001/11