Invention Grant
US07884746B2 Noise limitation of a signal dependent multibit digital to analog signal conversion
有权
信号相关多位数字到模拟信号转换的噪声限制
- Patent Title: Noise limitation of a signal dependent multibit digital to analog signal conversion
- Patent Title (中): 信号相关多位数字到模拟信号转换的噪声限制
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Application No.: US12422304Application Date: 2009-04-13
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Publication No.: US07884746B2Publication Date: 2011-02-08
- Inventor: Sandeep Oswal , Jagannathan Venkataraman
- Applicant: Sandeep Oswal , Jagannathan Venkataraman
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Steven A. Shaw; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: H03M1/66
- IPC: H03M1/66

Abstract:
Several methods and a system of noise limitation of a signal dependent multibit digital to analog signal conversion are disclosed. An exemplary embodiment provides a method that includes receiving an output of a multibit analog to digital circuit of a continuous time sigma delta converter. The method further includes limiting a noise generation by adaptively selecting a digital to analog converter element out of a plurality of digital to analog converter elements in accordance with an input signal magnitude. In addition, the method includes implementing a selected digital to analog converter element to generate an analog signal.
Public/Granted literature
- US20090257558A1 NOISE LIMITATION OF A SIGNAL DEPENDENT MULTIBIT DIGITAL TO ANALOG SIGNAL CONVERSION Public/Granted day:2009-10-15
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