IEEE Transactions on Circuits & Systems II Express Briefs · 2010 · 33 citations · 14 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsSemiconductor DevicesAnalog Integrated CircuitsCmos Circuit DesignDifferential AmplifiersGate Drive CircuitsIntegrated Circuit DesignMixed-signal Integrated Circuit DesignCmos Analog Circuit DesignCmos Analog Integrated CircuitsCmos Differential AmplifiersCommon-mode FeedbackLow-voltage Cmos Design
This brief introduces four different structures for implementing a continuous-time common-mode feedback (CMFB) network for fully differential (FD) amplifiers. The proposed circuits use bulk-driven MOS transistors, thus representing a low-voltage realization of their gate-driven counterparts. The CMFB circuits were included in a 1.5-V FD buffer implemented in standard 0.35-μm CMOS technology. Experimental results illustrate the performance of the proposed schemes, demonstrating their suitability to operate with a low supply voltage.
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