公开(公告)号：US10897262B2

公开(公告)日：2021-01-19

申请号：US15620770

申请日：2017-06-12

Applicant: Texas Instruments Incorporated

Inventor： Akhilesh Kesavanunnithan ,  Sharat Chandra Rudrasamudram ,  Henry Manoj D'Souza ,  Vivek Varier

IPC: H03M1/06 ,  H03M1/10 ,  H03M1/12

Abstract: Methods and apparatus for determining non-linearity in analog-to-digital converters are disclosed. An example apparatus includes a signal interface to receive an output of an analog-to-digital converter (ADC), the output corresponding to a periodic signal transmitted to the ADC; a signal transformer to determine at least one of a harmonic phase or a harmonic amplitude corresponding to the output; and an integral non-linearity (INL) term calculator to determine the INL of the ADC based on a characteristic of the periodic signal and the at least one of the harmonic phase or the harmonic amplitude.