Recent developments in the CBC3, a CMS micro-strip readout ASIC for track-trigger modules at the HL-LHC

The CMS Binary Chip (CBC) is the front-end readout ASIC planned for the outermost layers of the CMS Phase 2 silicon outer tracker. Results from an extensive irradiation campaign carried out on the CBC3, the first version of the ASIC to include the full trigger logic circuitry, have demonstrated that the chip is capable of withstanding the levels of radiation expected at the HL-LHC, with only a slight ( <1% ) increase in power consumption. Results from the irradiation campaign, and details of the novel damage model developed to describe the measurements and extrapolate to the final operating conditions, will be presented. Additionally, results from tests at the Fermilab test beam facility will be shown that demonstrate the full functionality of the trigger logic.