Design of Low Voltage Low Power CMOS OP-AMPS with Rail-to-Rail Input/Output Swing

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Abstract--A novel input and output biasing circuit to extend the input common mode (CM) voltage range and the output swing to rail-to-rail in a low voltage op-amp in standard CMOS technology is presented. The input biasing circuit uses a Switched Capacitor Based Attenuator (SCBA) approach to establish rail-torail common mode input voltage range. And the output biasing circuit uses an Output Driver (OD), with floating bias to give the rail-to-rail swing at output stage. Three different OD schemes in operational amplifier have been proposed and tested the performance with SCBA. The simulation results justify the theoretical analysis.

S. V. Gopalaiah, A. P. Shivaprasad, Sukanta K. Pan

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Computer Architecture | Input Biasing Circuit | Mode Input Voltage | Output Biasing Circuit | VLSID 2004 |

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Added	01 Dec 2009
Updated	01 Dec 2009
Type	Conference
Year	2004
Where	VLSID
Authors	S. V. Gopalaiah, A. P. Shivaprasad, Sukanta K. Panigrahi

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Design of Low Voltage Low Power CMOS OP-AMPS with Rail-to-Rail Input/Output Swing

Computer Architecture | Input Biasing Circuit | Mode Input Voltage | Output Biasing Circuit | VLSID 2004 |

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