sy84782u Micrel Semiconductor, sy84782u Datasheet - Page 8

• Manufacturer Part Number: sy84782u
• Description: Low Power 2.5v 1.25gbps Fp/dfb Laser Diode Driver
• Manufacturer: Micrel Semiconductor

between the first bit and the last bit of a long string of
identical bits in a low data rate application. This leads to
higher pattern-dependent jitter in the transmitter signal.
0.1µF is found to be good for all applications from
155Mbps to 1.25Gbps.
AC-coupling the laser to the driver brings a solution to
the driver headroom problem at the expense of extra
components, loss of part of the modulation current
wasted in the pull-up network, and additional power
consumption.
Micrel, Inc.
January 2011
8
Figure 3. Laser AC-Coupled
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SY84782U