TW200501553A - Improved circuit of common mode feedback amplifier and method thereof - Google Patents
Improved circuit of common mode feedback amplifier and method thereofInfo
- Publication number
- TW200501553A TW200501553A TW092116834A TW92116834A TW200501553A TW 200501553 A TW200501553 A TW 200501553A TW 092116834 A TW092116834 A TW 092116834A TW 92116834 A TW92116834 A TW 92116834A TW 200501553 A TW200501553 A TW 200501553A
- Authority
- TW
- Taiwan
- Prior art keywords
- amplifier
- cmfb
- common mode
- level
- mode feedback
- Prior art date
Links
Abstract
The present invention relates to an improved circuit of common mode feedback (CMFB) amplifier and a method thereof and aims to extend the dynamic range of a CMFB amplifier mainly by adding two symmetric sets of mixed signal gain amplifier separately to each of the output end and input end of the CMFB amplifier so as to minimize the distortion under a large signal distortion generated when a deviation of the output direct-current (DC) level of the CMFB amplifier occurs due to any change in the DC level of the CMFB amplifier, the operating condition, or the manufacturing process. Thus, the present invention can resolve the distortion problem of the differential output signal of the CMFB amplifier caused by any output level deviation and, therefore, can extend the input dynamic range of the CMFB amplifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW092116834A TWI268656B (en) | 2003-06-20 | 2003-06-20 | Improved circuit of common mode feedback amplifier and method thereof aims to extend the dynamic range of CMFB amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW092116834A TWI268656B (en) | 2003-06-20 | 2003-06-20 | Improved circuit of common mode feedback amplifier and method thereof aims to extend the dynamic range of CMFB amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200501553A true TW200501553A (en) | 2005-01-01 |
TWI268656B TWI268656B (en) | 2006-12-11 |
Family
ID=57798005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW092116834A TWI268656B (en) | 2003-06-20 | 2003-06-20 | Improved circuit of common mode feedback amplifier and method thereof aims to extend the dynamic range of CMFB amplifier |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI268656B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7564306B2 (en) | 2006-06-16 | 2009-07-21 | Realtek Semiconductor Corp. | Amplifier with common-mode feedback circuit |
US10491166B2 (en) | 2018-03-01 | 2019-11-26 | Semiconductor Components Industries, Llc | Low noise differential amplifier |
-
2003
- 2003-06-20 TW TW092116834A patent/TWI268656B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7564306B2 (en) | 2006-06-16 | 2009-07-21 | Realtek Semiconductor Corp. | Amplifier with common-mode feedback circuit |
US10491166B2 (en) | 2018-03-01 | 2019-11-26 | Semiconductor Components Industries, Llc | Low noise differential amplifier |
US10756680B2 (en) | 2018-03-01 | 2020-08-25 | Semiconductor Components Industries, Llc | Low noise differential amplifier |
Also Published As
Publication number | Publication date |
---|---|
TWI268656B (en) | 2006-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |