This full custom IC in 0.8µm CMOS has:
- voltage regulator
- multi channel pulse shaping
- multiple resistor string digital to analogue converters (DACs)
- 49 bit shift register for programming DACs
- power down mode
- comparators & Schmitt triggers
- undervoltage detection.
The IC takes multiple inputs from radiation sensors and produces digital outputs
for pulses above a threshold set by the DACs. The circuit is battery operated so
low current consumption is critical to maintain good battery life.