427 / 2019-02-26 19:59:05

A Refined Selected-Codes Linearity Test on Pipelined ADC

Pipelined ADC,static test,redundancy characteristic,self-correction mechanism

全体主题 > Modeling and Simulation Technology

A refined selected-codes based test method for pipelined ADC is presented. By selecting a set of specific codes and a self-correction mechanism implementation, the proposed method leverages the redundancy characteristic of the Pipelined ADC to reduce the number of output codes in linearity test after a comprehensive consideration of the comparator offset, capacitance mismatch, gain error, and input noise. Experimental evaluation on a 10-bit 1.5-bit/stage Pipelined ADC as test model has proved that the test data has decreased to 7% compared to the traditional method while maintaining a level of accuracy by minimizing the error of mapping between the comparator and the transition edge. The proposed method efficiently decrease the test cost and heightening the test accuracy.