CS6703 Myson Technology, CS6703 Datasheet - Page 4

• Manufacturer Part Number: CS6703
• Description: 200Mbps Fiber-optic Vcsel/laser Driver
• Manufacturer: Myson Technology

FUNTIONAL DESCRIPTION
CS6703 consists of a laser bias generator, a modulation current driver, and a rise/fall time adjustment circuit.
Laser bias driver
The laser bias current is adjusted by a resistor Rdcb
Modulation Current driver
The modulation current is adjusted by a resistor Rmod
Rise/fall time adjustment
The rise/fall time of the CS6703 can be adjusted by a resistor R
ground.
I
I
I
I
bias
bias
mod
mod
Time
= 210/Rdcb
= 220/Rdcb
= 436/Rmod
= 477/Rmod
700
690
680
670
660
650
640
Myson-Century Technology
ps
set
set
set
set
: for 3.3V.
: for 5V.
: for 3.3V.
: for 5V.
6k
10k 15k
20k
Figure-3 R
30k
40k
offset
set
50k
set
V.S. Rise/Fall time
which is connected between pin RDCB and ground.
which is connected between pin RMOD and ground.
60k
offset
70k
which is connected between pin ROFS and
80k
90k
Resistance
R
ofsset
(
CS6703
page 4 of 7