Radiation-Hardened Wide-Temperature Mixed-Signal Library in a 22nm FDSOI CMOS Process

Alphacore proposes to design and characterize a radiation-hardened analog library that includes total ionizing dose (TID) of 300krad(Si), immunity to single event latchup and functional interrupt (SEL and SEFI), and low single event upset (SEU) nbsp;rate.nbsp; Alphacorersquo;s proposed analog library includes three key components to any mixed-signal SoC, or ASIC: a phase locked loop (PLL), an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC). The 3-item analog library is not the only deliverable in this program, Alphacore will also develop a set of design guidelines for the 22FDX process space mission IC designers can use to achieve both radiation-hard and highly reliable low-temperature capable systems. The guidelines will include biasing (VDD, back bias) and layout rules which mitigate deleterious effects, such as hot carrier degradation and TID. These models can be used in most common design flows. Radiation testing of the DAC is also underway to establish that these designs clearly meet the hardness requirements of the target missions. During Phase II, Alphacore will not only support CMOS IP development for the most harsh NASA mission environments, but also cover critical immediate needs in other areas such as the High-Performance Spaceflight Computing (HPSC) Chiplet, a radiation-hardened multi-core processor. NASA also will be developing single board computer based on this chiplet. These components are supposed to bring NASA (and DoD) two orders of magnitude improvement in their space computing capabilities. nbsp;