||due Mar 99
||ASD Lite final prototype with improved input ESD protection.
||ASD Lite prototype. 4 identical ASD channels. Fully differential. Tail-cancellation
shaping, disc, LVDS outputs. Several new features to reduce crosstalk and
increase stability. Now being tested; preliminary results are
||Dedicated ESD (electrostatic discharge) protection chip. 16 input with
different combinations of ESD structures and pre-amps.
||Test to optimize preamp size (2 options), LVDS driver type (2 options)
and baseline-resoration (with/without).
||Preamp, shaper, baseline-restoration. 3 identical channels with
||Second 0.5um HP chip. Preamp, shaper, plus discriminator and LVDS output.
||First test in 0.5um HP process, 3.3V power supply. Includes preamp
and new pole/zero tail cancellation shaper. Most features of this chip
could not be tested due to a processing problem which resulted in the capacitors
being omitted from the chip!
||First fully-differential preamp+main amp+discriminator (no shaping)
This chip included further refinements in the preamplifier, many test structures
for ESD protection, and LVDS (Low-Voltage Differential Signalling) outputs.
Tested extensively on-chamber.
||An integrated 4-channel ASD
||Discriminator Test Chip
||Preamp Test Chip