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1 International Journal of Microelectronics and Computer Science

1 2010

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A solution to low power switched capacitor integrator design with reduced effective input capacitance

Korkmaz S., Dundar G.

International Journal of Microelectronics and Computer Science

2010

Vol. 1, nr 3

229-235

A novel low power Switched Capacitor Integrator with reduced effective input capacitance is proposed in this paper. It is mainly based on reducing the effective input sampling capacitance by charge sharing with an extra capacitance, such that the integration capacitance can be chosen much smaller while maintaining the same sampling to integration capacitance ratio. Reducing the integration capacitance will result in less integration current and less integration current will in turn result in less power over the integrator which is the main goal of this work, reducing the integrator power consumption and chip area. Another main advantage of this configuration is, that it can be used in large time constant integrators without using physically large integration capacitance.