公开(公告)号：US10951226B2

公开(公告)日：2021-03-16

申请号：US16555160

申请日：2019-08-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Srinivasa Rao Madala ,  Rahul Sharma ,  Sandeep Kesrimal Oswal

IPC: H03M1/66 ,  H03M1/76 ,  H03M1/06 ,  H04B1/04 ,  H03M1/54 ,  H04L25/03 ,  H03M1/12

Abstract: A digital-to-analog converter system has digital-to-analog converters, a common output, and a digital controller for transmitting first codes to one of the converters at a radio-frequency digital rate, and for transmitting second codes to another one of the converters at the same rate. The digital controller includes a timing system for operating each converter at the digital rate in a return-to-zero configuration, such that a signal from the first converter is transmitted to the common output while the second converter is reset, and vice versa. The digital-to-analog converter system can generate a radio-frequency analog signal having signals in first and second Nyquist zones simultaneously.

公开(公告)号：US10439631B1

公开(公告)日：2019-10-08

申请号：US16233207

申请日：2018-12-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Srinivasa Rao Madala ,  Rahul Sharma ,  Sandeep Kesrimal Oswal

IPC: H03M1/66 ,  H03M1/76 ,  H03M1/06 ,  H04B1/04 ,  H03M1/54 ,  H04L25/03 ,  H03M1/12

Abstract: A digital-to-analog converter system has digital-to-analog converters, a common output, and a digital controller for transmitting first codes to one of the converters at a radio-frequency digital rate, and for transmitting second codes to another one of the converters at the same rate. The digital controller includes a timing system for operating each converter at the digital rate in a return-to-zero configuration, such that a signal from the first converter is transmitted to the common output while the second converter is reset, and vice versa. The digital-to-analog converter system can generate a radio-frequency analog signal having signals in first and second Nyquist zones simultaneously.

公开(公告)号：US11509325B2

公开(公告)日：2022-11-22

申请号：US17168584

申请日：2021-02-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Srinivasa Rao Madala ,  Rahul Sharma ,  Sandeep Kesrimal Oswal

IPC: H03M1/66 ,  H03M1/76 ,  H03M1/06 ,  H04B1/04 ,  H03M1/54 ,  H04L25/03 ,  H03M1/12

Abstract: A digital-to-analog converter system has digital-to-analog converters, a common output, and a digital controller for transmitting first codes to one of the converters at a radio-frequency digital rate, and for transmitting second codes to another one of the converters at the same rate. The digital controller includes a timing system for operating each converter at the digital rate in a return-to-zero configuration, such that a signal from the first converter is transmitted to the common output while the second converter is reset, and vice versa. The digital-to-analog converter system can generate a radio-frequency analog signal having signals in first and second Nyquist zones simultaneously.

公开(公告)号：US11677315B2

公开(公告)日：2023-06-13

申请号：US17103176

申请日：2020-11-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Srinivasa Rao Madala ,  Suvadip Banerjee ,  Sudhir Komarla Adinarayana ,  Tarunvir Singh

IPC: H02M3/24 ,  H02M1/44 ,  H02M3/335

CPC classification number: H02M1/44 ,  H02M3/24 ,  H02M3/33515

Abstract: A system includes a switching converter, an input voltage source coupled to an input of the switching converter, and a load coupled to an output of the switching converter. The system also includes a load sense circuit coupled to the load and configured to provide a load sense signal. The system also includes an oscillator coupled to the switching converter and configured to provide a spread spectrum modulated (SSM) clock signal to the switching converter, wherein a frequency of the SSM clock signal varies as a function of the load sense signal.