Single Transistor High-Impedance Tail Current Source With Extended Common-Mode Input Range and Reduced Supply Requirements |
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Authors: | Ramirez-Angulo J Carvajal RG Lopez-Martin AJ |
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Affiliation: | New Mexico State Univ., Las Cruces; |
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Abstract: | A compact implementation of a single transistor tail current source with very high output impedance (>40 MOmega) and low-voltage requirements is introduced. The tail transistor can operate with less than a drain-source saturation voltage and allows implementation of low-voltage differential pairs with wide common-mode input range and very high common-mode rejection ratio. Simulation and experimental results are shown that validate the proposed circuit. |
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