Fully digital optimized testing and calibration technique for Sigma Delta ADCís

Daniela De Venuto1 and Leonardo Reyneri2
1Politecnico di Bari, Italy, 2Politecnico di Torino, Italy


This work describes a novel test strategy that uses digital stimuli for cheap, fast, though accurate, testing of high resolution Sigma Delta ADCís. Simulation results showed a detection sensitivity on specifications parameters of up to

-100dB. The proposed method can also help to reduce the cost of ADC production test, to extend test coverage and to enable built-in self-test and test-based self-calibration.