Invention Grant
- Patent Title: Enhancing dual op-amps for differential connections
- Patent Title (中): 增强差分连接的双运算放大器
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Application No.: US12625870Application Date: 2009-11-25
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Publication No.: US08134407B2Publication Date: 2012-03-13
- Inventor: Scott A. Wurcer , Robert F. Day
- Applicant: Scott A. Wurcer , Robert F. Day
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Kenyon & Kenyon LLP
- Main IPC: H03F3/45
- IPC: H03F3/45

Abstract:
In an embodiment of the invention, a differential input signal is coupled to a plurality of transconductance blocks. In some embodiments, each of the transconductance blocks divide an input transconductance among a plurality of signal paths to a plurality of outputs in each transconductance block. In an embodiment, the input transconductance may be divided based a ratio of transistor areas in the plurality of signal paths, though other embodiments may divide the transconductance differently. In some embodiments, transconductance block outputs of a plurality of transconductance blocks may be cross-coupled to provide a gain path for a differential signal than is greater than that of a common mode signal.
Public/Granted literature
- US20110121902A1 ENHANCING DUAL OP-AMPS FOR DIFFERENTIAL CONNECTIONS Public/Granted day:2011-05-26
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