  We present a novel design and the test results of a 4-channel driver for an
array of Vertical-Cavity Surface-Emitting Lasers (VCSELs). This ASIC, named
cpVLAD and fabricated in a 65 nm CMOS technology, has on-chip charge pumps and
is for data rates up to 10 Gbps per channel. The charge pumps are implemented
to address the issue of voltage margin of the VCSEL driving stage in the
applications under low temperature and harsh radiation environment. Test
results indicate that cpVLAD is capable of driving VCSELs with forward voltages
of up to 2.8 V using 1.2 V and 2.5 V power supplies with a power consumption of
94 mW/channel.
