  This paper describes the design and testing results of an 8 channels
preamplifier-discriminator circuit based on a resistive feedback Transimpedance
Amplifier architecture and a Leading-Edge Discriminator stage for fast
high-accuracy time measurement systems. The circuit has been designed in a 130
nm CMOS technology. It is intended to be used as a Front-End-Electronics for
measuring the Time Of Flight using diamond detectors. The size of the chip is
1.27x1.22mm2 and the total power consumption of one channel is 1.5mW with a
power supply of 1.2V. Testing results shows a timing jitter of about 80ps for a
10fC input charge pulse.
