Scalable space instrument electrical architectures based on ADHA (Advanced Data Handling Architecture): from multi-instrument missions to large-scale telescopes

The Advanced Data Handling Architecture (ADHA) is a collaborative initiative by the European Space Agency, large system integrators, and data handling equipment suppliers to provide a modular and scalable standard for data handling equipment for space applications. The aim of ADHA is to reduce NRE (Non-Recurring Engineering) in flight projects, by providing standard electronics units and modules form-factors, a standard electrical backplane, and a standard procurement and AIT flow -- which is in-line with ESA's objective of reducing spacecraft development time, and promoting faster adoption innovative technologies. This paper outlines how standardised ADHA-based hardware can be used to realise end-to-end electronics and software designs for different space instrument topologies and classes, including multi-instrument planetary missions, up to large-scale complex deep-space telescopes. The paper also provides example designs, their parameters and performances.