Very-high-speed Si bipolar static frequency dividers with new T-type flip-flops

Author

Ishii, Kiyoshi ; Ichino, Haruhiko ; Togashi, Minoru ; Kobayashi, Yoshiji ; Yamaguchi, Chikara

Author_Institution

NTT LSI Labs., Kanagawa, Japan

Volume

30

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

19

Lastpage

24

Abstract

This paper presents two circuit techniques for highspeed operation of a master-slave toggle flip-flop circuit (MSTFF). One circuit reduces the gain in latching circuits, and the other uses the transient current of the emitter followers to boost the switching speed. Both the SPICE simulations and the measured results for static 1/8 frequency dividers fabricated using 0.5-μm super self-aligned process technology (SSTIC) show that the maximum operating speed of our MS-TFF´s is 10% and 30% faster than that of conventional ones. By applying these technologies, 19.1-GHz and 22.4-GHz Si bipolar static frequency dividers have been fabricated

Keywords

SPICE; bipolar logic circuits; flip-flops; frequency dividers; integrated circuit design; very high speed integrated circuits; 0.5 mum; 1/8 frequency dividers; 19.1 GHz; 22.4 GHz; SPICE simulation; T-type flip-flops; bipolar static frequency dividers; emitter follower transient current; frequency divider design; latching circuit gain reduction; master-slave toggle flip-flop circuit; maximum operating speed; super self-aligned process technology; switching speed; very-high-speed circuits; Capacitance; Circuit simulation; Flip-flops; Frequency conversion; Frequency measurement; Master-slave; Resistors; SPICE; Switches; Switching circuits;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.350199

Filename

350199