Thomson-csf

Daniel Forster

Jean-Luc Berger

Jean-Edgar Picquendar

Jean-Louis Coutures

Roger Benoit-Gonin

Jean E Picquendar

Roger B Gonin

The switched-capacitance amplifier comprises n capacitors C.sub.11 to C.sub.1n which are periodically switched in parallel and in series, the n parallel-switched capacitors being charged simultaneously by the same voltage V.sub.E. An amplified voltage n.times.V.sub.E is obtained between the end terminals A and B of the n series-switched capacitors. Periodic switching of the n capacitors in parallel and in series is performed by means of MOS transistors T.sub.11 to T.sub.1(2n-1) and T.sub.21 to T.sub.2(n-1) which operate in the switching mode. The n capacitors and the MOS transistors are integrated on the same semiconductor substrate.

Switched-capacitance amplifier, a switched-capacitance filter and a

Two analog filters of the second order are arranged in series with a transverse charge transfer filter upstream and downstream of the latter. The analog filters are switched capacitor filters having an amplifier and a network of capacitors and MOS transistors. The filtering device is entirely integrated onto the same semiconductor substrate.

Filtering device using the transfer of electrical charges into a

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Paris, France

Daniel Forster