The ADCMP565 is an ultrafast voltage comparator fabricated
on Analog Devices’ proprietary XFCB process. The device
features 300 ps propagation delay with less than 50 ps overdrive
dispersion. Overdrive dispersion, a particularly important
characteristic of high speed comparators, is a measure of the
difference in propagation delay under differing overdrive
conditions.
A fast, high precision differential input stage permits consistent
propagation delay with a wide variety of signals in the
common-mode range from ?2.0 V to +3.0 V. Outputs are
complementary digital signals fully compatible with ECL 10 K
and 10 KH logic families. The outputs provide sufficient drive
current to directly drive transmission lines terminated in 50 Ω
to ?2 V. A latch input is included, which permits tracking,
track-and-hold, or sample-and-hold modes of operation.
The ADCMP565 is available in a 20-lead PLCC package.