Abstract: A configurable analog and digital array is realized in a hierarchical structure on at least two levels. It comprises at least two first-order matrix arrays, each of said matrix arrays including a plurality of basic elements which are arranged in rows and/or columns and at least part of which are analog basic elements, and a first switch matrix for controllably interconnecting the signal inputs and the signal outputs of the basic elements and for connecting said basic elements to matrix inputs and matrix outputs, as well as at least one second-order matrix array having a second switch matrix for controllably interconnecting the matrix inputs and the matrix outputs of the first-order matrix arrays and for controllably connecting said matrix arrays to array inputs and array outputs.

Abstract: An amplifier output stage that can be operated with low supply voltages and as a voltage amplification greater than one has two complementary transconductance amplifiers having asymmetrical characteristics of their output currents with reference to the input voltages. The amplifier output stage also has two power amplifiers following these transconductance amplifiers and whose outputs are connected to the output node of the amplifier output stage. The amplifier output stage also has a feedback network that is connected between the output node and a reference potential node and defines a feedback node that is connected to respectively one of the inputs of the transconductance amplifiers, whereas the other inputs of the transconductance amplifiers are connected to the input node of the amplifier output stage.