An intellectual property module for auto-calibration of time-interleaved pipelined analog-to-digital converters

A flexible digital intellectual property (IP) module that controls the auto-calibration of time interleaved pipelined ADCs is presented. It takes advantage of a judicious combination of classical calibration techniques to determine, in an adaptive way, the adequate compensation of gain and offset for each stage of interleaved pipelined ADCs. A novel built-in self-test (BIST) is also included in the IP. Preliminary simulation results confirm the expected behavior of the calibration method. This soft IP was designed and synthesized.