VSC7986
P
RODUCT
B
RIEF
10 Gbps DML Driver
Vitesse’s innovative laser driver chipset paves the way in ultra low-power optical driver solutions
The VSC7986 device is an innovative integrated DML laser driver that
delivers optimized laser performance and control in SFP+ optical modules
for 8.5 Gbps Fibre Channel and 10 Gigabit Ethernet applications using only
198 mW power consumption.
Designed to work in conjunction with the VSC7985 10 Gbps VCSEL driver,
the VSC7986 die DC-couples directly to the optical diode inside a TO-can.
This space-saving and power efficient design eliminates bulky external
components, dramatically reducing cost and overall power requirements.
The VSC7986 can achieve power savings of up to 40% at laser end-of-life
conditions.
The streamlined VSC7986 device features a linear high-efficiency gain
amplifier, enabling a wide range of modulation and bias control.
The VSC7985 and VSC7986 chipset offers a unique programmable
pre-emphasis/de-emphasis feature for optimizing optical eye mask margin.
Highlights
• Ultra low-power DML driver
• DC-couples directly to laser diode
• Optimal performance with
VSC7985 pre-driver
Applications
• 10GBASE-LR, 10GBASE-LRM
• 8 Gbps, 4 Gbps, and 2 Gbps Fibre
Channel
• SONET/SDH OC-192/STM-64
• SFP+, XFP, XENPAK, XPAK, X2,
and 300-pin MSA modules
8.5 Gbps and 10 Gbps SFP+ Modules
TOSA
VSC7986
LDD
VSC7985
Pre-driver
Electrical
Optical
VSC7878/
VSC7978*
TIA
ROSA
VSC
7987
Post Amplifier*
Microcontroller with
Vitesse Firmware
Two-wire
* Limiting applications only
Use the VSC7986 DML driver in conjunction with the VSC7985 10 Gpbs VCSEL pre-driver.
www.vitesse.com
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
