DESIGN OF A 10 K NBN A D CONVERTER FOR IR FOCAL-PLANE ARRAY SENSORS/

We are implementing a 12 bit SFQ counting ADC with parallel-to-serial readout using our established 10 K NbN capability. This circuit provid es a key element of the analog signal processor (ASP) used in large in frared focal plane arrays. The circuit processes the signal data strea m from a Si:As BIB detector array. A 10 mega samples per second (MSPS) pixel data stream flows from the chip at a 120 megabit bit rate in a format that is compatible with other superconductive time dependent pr ocessor (TDP) circuits being developed. We will discuss our planned AS P demonstration, the circuit design, and test results.