2-GHz/2-mW and 12-GHz/30-mW dual-modulus prescalers in silicon bipolar technology

Two dual-modulus prescalers manufactured in a low-cost silicon bipolar technology are presented. The first circuit is optimized for low power consumption and operates up to 2 GHz at a power consumption of 2 mW. The second prescaler is optimized for high speed and operates up to 12 GHz with a power consumption of 30 mW. The prescalers have selectable divide ratios of 128/129 and 256/257, respectively.