A 3 μW, 400 MHz Divide-by-5 Injection-Locked Frequency Divider with 56% Lock Range in 90nm CMOS
نویسندگان
چکیده
An ultra-low power injection locked frequency divider (ILFD) is presented and demonstrated. Based on a 5-stage single ended ring oscillator, the ILFD achieves a lock range of 56% at a division ratio of 5 in the medical implant communications service (MICS) and the 433MHz ISM frequency bands. The ILFD is implemented in a 90nm CMOS process. It consumes 3 μW of power from a 1.0V supply and 100 μm of area. The circuit achieves a frequency divider figure-of-merit of 134 GHz/mW. Index Terms — frequency division, injection locking, ring oscillator, injection locked frequency divider, ILFD, low power design, MICS
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