Current type inverter circuit, current type logic circuit, curre

Electronic digital logic circuitry – Function of and – or – nand – nor – or not – Field-effect transistor

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H03K 190944

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active

056569548

ABSTRACT:
A current type inverter circuit or the like is obtained which operates at a high speed with a low power consumption. A reference power source 1 has one end connected to a power source VDD and the other source receiving a reference current Iref. A drain and a gate of an NMOS transistor Q1 of a current mirror circuit CM1, as an input part, receive an input current Iin. A drain of an NMOS transistor Q2 is connected to an node N1 of the other end side of the reference power source 1 as an output part. As an input part, a drain and a gate of an NMOS transistor Q3 of a current mirror circuit CM2 are connected to the node N1 while a drain of an NMOS transistor Q4 functions as an output part for outputting an output current Iout. The transistors are set so that all of the conditions TS1.gtoreq.1, TS2.gtoreq.1 and TS1.multidot.TS2>1 are satisfied where TS1 is a ratio of the size of the NMOS transistor Q2 to the size of the NMOS transistor Q1 and TS2 is a ratio of the size of the NMOS transistor Q4 to the size of the NMOS transistor Q3.

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IEEE Journal of Solid-State Circuits, vol. SC-22, No. 2, pp. 255-261, Apr. 1987, Deog-Kyoon Jeong, et al., "Design of PLL-Based Clock Generation Circuits".
Sedra et al.; "Mircoelectronic Circuits"; copyright 1987 (no month available) by Holt, Rinehart and Winston, Inc.; pp. 378, 379, 403 and 506-509.

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