Itt Industries, Inc.

Detlev Kunz

Herbert Elmis

Wolfgang Gollinger

Hermannus Schat

Dieter Holzmann

Leslie Miskin

Holger Struthoff

Mauritz F Schenstrom

To adjust time delays in equidistant steps, an inverter chain is provided with an even number of static inverters of identical topology. The output of one of the even-numbered inverters is connected to the signal output via a selector switch. During suitable frequency-measuring periods, an odd number of inverters is connected to form a ring by directly coupling the output of an odd-numbered inverter to the input of the first, and a digital measuring arrangement determines the time delay of the ring-connected portion from the frequency of the ring's self-excited oscillation. The output signal of the measuring arrangement is used to adjust the time delay of the inverter chain.

MOSFET Integrated delay circuit for digital signals and its use in

A monolithic integrated digital-to-analog converter is provided wherein the resistors are replaced by insulated-gate field-effect transistors thus avoiding any detrimental effects of variation between supposedly identical components. The equivalent resistance values of the insulated-gate field-effect transistors are determined by a fixed ratio of channel width to channel length.

Monolithic integrated circuit for a digital-to-analog converter

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Freiburg, Germany

Detlev Kunz