Patent ID: 6707405
Filing Date: 2004-03-16
Classification: H03F,H03K

Abstract:
An integrated analog multiplexer comprising a plurality of multiplexer inputs, a multiplexer output, a switch device and a differential amplifier with an inverting and a non-inverting amplifier input as well as an amplifier output, wherein the amplifier output forms the multiplexer output, the differential amplifier by means of a feedback branch from the amplifier output to the inverting amplifier input is wired as inverting amplifier and the switch device selectively connects one of the multiplexer inputs with the inverting amplifier input, wherein the switch device for each of the multiplexer inputs has a first field effect transistor of a first polarity that is preferably switched-on with a boosted control voltage, and wherein the feedback branch includes a second, switched-on field effect transistor of the first polarity that is preferably addressed with the boosted control voltage.