VCC
DUTY
FFSET
IMB
IM
IMM
IMC
AR
PD
IB
IBM
TDlP
TDlN
SDlP
SDlN
Duty
Adjust
DFF
SEL
OPSET
SClP
SClN
TClP
TClN
Anti-
rush
-
+
-
+
MCCL
OPCL
1/20
1/20
SHDW
IMSET
IBSET
Figure 2. Modulation current control loop and optical power control loop.
VCC
R
IMB
IM
IMM
IMC
AR
PD
IB
IBM
OPSET
Anti-
rush
-
+
-
+
MCCL
OPCL
1/20
1/20
SHDW
IMSET
IBSET
Figure 3. Modulation current control loop with enhanced extinction ratio control.
Data Sheet Rev.: 11
GD16521
Page 3 of 13