MY125959A - Digital to analog converter employing sigma-delta loop and feedback dac model - Google Patents
Digital to analog converter employing sigma-delta loop and feedback dac modelInfo
- Publication number
- MY125959A MY125959A MYPI20014607A MY125959A MY 125959 A MY125959 A MY 125959A MY PI20014607 A MYPI20014607 A MY PI20014607A MY 125959 A MY125959 A MY 125959A
- Authority
- MY
- Malaysia
- Prior art keywords
- dac
- signal
- digital
- sigma
- delta loop
- Prior art date
Links
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
A CIRCUIT TOPOLOGY AND METHOD FOR CONVERTING A DIGITAL INPUT SIGNAL TO AN ANALOG OUTPUT SIGNAL EMPLOYS A MODIFIED SIGMA-DELTA LOOP AND A DAC, AND OPERATES WITH IMPROVED ACCURACY OVER A WIDE FREQUENCY RANGE. A LOOP FILTER SUCH AS A DIGITAL ACCUMULATOR RECEIVES AN INPUT SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN A DIGITAL INPUT SIGNAL AND A FEEDBACK SIGNAL. A QUANTIZER QUANTIZES THE OUTPUT OF THE LOOP FILTER, AND THE DAC CONVERTS THE QUANTIZED SIGNAL INTO AN ANALOG OUTPUT SIGNAL. THE QUANTIZED SIGNAL IS ALSO PROVIDED TO A DAC MODEL. IN RESPONSE TO THE QUANTIZED SIGNAL AND BEHAVIORAL INFORMATION ABOUT THE DAC, THE DAC MODEL VARIES THE FEEDBACK SIGNAL TO MATCH EXPECTED OUTPUT SIGNALS FROM THE DAC, INCLUDING ERRORS INTRODUCED BY THE DAC. BY THE OPERATION OF THE SIGMA-DELTA LOOP, THE ERRORS OF THE DAC ARE SUBSTANTIALLY REDUCED.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI20014607 MY125959A (en) | 2001-10-02 | 2001-10-02 | Digital to analog converter employing sigma-delta loop and feedback dac model |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI20014607 MY125959A (en) | 2001-10-02 | 2001-10-02 | Digital to analog converter employing sigma-delta loop and feedback dac model |
Publications (1)
Publication Number | Publication Date |
---|---|
MY125959A true MY125959A (en) | 2006-09-29 |
Family
ID=47264579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI20014607 MY125959A (en) | 2001-10-02 | 2001-10-02 | Digital to analog converter employing sigma-delta loop and feedback dac model |
Country Status (1)
Country | Link |
---|---|
MY (1) | MY125959A (en) |
-
2001
- 2001-10-02 MY MYPI20014607 patent/MY125959A/en unknown
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