Invention Grant
- Patent Title: Adaptive toggle number compensation for reducing data dependent supply noise in digital-to-analog converters
-
Application No.: US16542602Application Date: 2019-08-16
-
Publication No.: US10693483B1Publication Date: 2020-06-23
- Inventor: Hao Luo , Shawn S. Kuo , Jialin Zhao , Steven Rose , Dong Li , Lin Zhang , Tommi Wang
- Applicant: Analog Devices International Unlimited Company
- Applicant Address: IE Limerick
- Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
- Current Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
- Current Assignee Address: IE Limerick
- Agency: Patent Capital Group
- Main IPC: H03M1/08
- IPC: H03M1/08 ; H03M3/00 ; H03M1/68

Abstract:
Adaptive toggle number compensation techniques for reducing data dependent supply noise in DACs are disclosed. Various embodiments are based on setting a certain target toggle number for a plurality of DAC units used to convert at least a portion of a digital data sample and then applying various adaptive techniques to try to achieve the target toggle number in converting the data sample from digital to analog domain. Adaptive toggle number compensation techniques described herein try to reduce data dependent supply noise by deliberately limiting, to a certain target number, the number of DAC units that undergo a switch from the digital input of 1 to 0 or from 0 to 1 in converting a digital data sample. Compared to the conventional dummy signal generation approach, such adaptive toggle number compensation techniques may provide significant savings in terms of power consumption of a DAC.
Information query