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