CONEXANT CX02066

network
access
products
3 Gbps lntermediate
Reach Laser Driver
CX02066
The CX02066 is a low-cost 3 Gbps laser driver designed for
short-reach SONET applications. The modulator is capable
of driving modulation currents up to 85 mA. The modulation
current is adjustable by an external resistor. The IC has an
internal temperature compensation circuit for compensating
the temperature characteristic of laser diode slope
efficiency adjusted with an external resistor. External bias
and modulation monitors are provided, as well as safety
alarm functions.
GND
VCC
CLK
CLK
VCC
GND
VCC
DIN
DIN
Vcc
GND
CEN
VCC
ENA
OCA
SET
DIS
MOD
SET
GND
GND
BIAS
MON
MPC
SET
MOD
MON
TC
SET
FAIL
GND
• DC-coupled operation
GND
TC
ADJ
• Differential PECL inputs
OCA
GND
• Temperature compensation of modulation current
GND
CMPC
Vcc
Vcc
Distinguishing Features
• 3 Gbps at 85 mA
• Mean laser power control
• Laser fault fail indicators
• Bias/modulation current monitor output
IBIAS
O/P
GND
O/P
Vcc
DOUT
DOUT
O/P
Vcc
O/P
GND
O/P
GND
IPD
• 24-pin BCC++ package