Jae-Yoon Sim

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We propose a fully-integrated temperature sensor for battery-operated, ultra-low powermicrosystems. Sensor operation is based on temperature independent/dependent current sources that are used with oscillators and counters to generate a digital temperature code. A conventional approach to generate these currents is to drop a temperature sensitive voltage(More)
An all-digital 90deg phase-shift DLL is proposed for 1.6 Gbps DDR interface by using a loop-embedded DCC and a binary phase detector with the lock range extended to 0~4pi radians. The DCC has a small delay and the fixed rising-edge property for loop-embedding. The chip fabricated with a 0.13 um CMOS process gives the DLL data rate of 667 Mbps~1.6 Gbps and(More)