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New dynamic flip-flops for high-speed dual-modulus prescaler

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4 Author(s)
Ching-Yuan Yang ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Guang-Kaai Dehng ; June-Ming Hsu ; Shen-Iuan Liu

A fast pipeline technique using single-phase, edge-triggered, ratioed, high-speed logic flip-flops and D flip-flops is introduced and analyzed. The circuits achieve high speed by reducing the capacitive load and sharing the delay between the combination logic blocks and the storage elements. Also it is suitable for realizing high-speed synchronous counters. A divide-by-128/129 and 64/65 dual-modulus prescaler using the proposed flip-flops is measured in 0.8 μm CMOS technology with the operating clock frequency reaching as high as 1.8 GHz

Published in:

IEEE Journal of Solid-State Circuits  (Volume:33 ,  Issue: 10 )