—A Built-In Self-Test (BIST) approach for functionality measurements, including noise figure (NF), linearity and frequency response of analog circuitry in mixedsignal systems, is presented. The BIST circuitry consists of a direct digital synthesizer (DDS) based test pattern generator (TPG) and a multiplier/accumulator based output response analyzer (ORA). The BIST approach has been implemented in hardware and used for actual NF measurements for comparison with measurements from external test equipment.
Jie Qin, Charles E. Stroud, Foster F. Dai