Abstract: An integrated circuit configurable as a transmitter/receiver includes learn capabilities that allows a receiver IC to memorize the identification pattern of a specific transmitter.

Abstract: A circuit for adjusting capacitors in a capacitor analog to digital converter has a main capacitor array including more than one capacitor array portion 20 and 22, and at least one first coupling capacitor C.sub.c. A first plate of each first coupling capacitor C.sub.c is coupled to one capacitor array portion 22 and a second plate of each first coupling capacitor C.sub.c is coupled to a next more significant capacitor array portion 20 such that each capacitor array portion is coupled to the next more significant capacitor array portion by one of the first coupling capacitors C.sub.c. The circuit has at least one second coupling capacitor C.sub.c3 with a first plate of each second coupling capacitor C.sub.c3 coupled to the first plate of a corresponding one of the first coupling capacitors C.sub.c.

Abstract: A Schottky diode circuit 20 is formed on a semiconductor layer 24. A conductive contact 36 on the surface of the semiconductor layer 24 forms a Schottky barrier 40 at the junction of the conductive contact 36 and the semiconductor layer 24. A guard ring 26 in the semiconductor layer 24 is adjacent to the Schottky barrier 40 and is separated from the conductive contact 36 by a portion of the semiconductor layer 24. No direct electrical path exists between the guard ring 26 and the conductive contact 36.

Abstract: A method and apparatus for a system physically realizing a transfer function and having improved accuracy and fast calibration is described, comprising a plurality of stages configured in a serial fashion, each stage having a transfer function realized with fixed and adjustable elements. Control logic for selectively reconfiguring said stages, operable for coupling any one of said stages to a reference signal and for further coupling said one of said stages to the remaining ones of said stages in a serial fashion is added; control logic for selectively causing said stages to transmit at their output responses to an input which enable measurement of individual components within said stages is included; and control logic for updating the adjustable elements within each stage is described.