LP

L. Pedala'

5 records found

Authored

To comply with wired communication standards such as USB, SATA and PCI/PCI-E, systems-on-chip require frequency references with better than 300ppm accuracy. LC-based references achieve 100ppm accuracy [1], but suffer from high power consumption (∼20mW). Thermal diffusivity (TD ...

This paper presents a 7-MHz CMOS RC frequency reference. It consists of a frequency-locked loop in which the output frequency of a digitally controlled oscillator (DCO) is locked to the combined phase shifts of two independent RC (Wien bridge) filters, each employing resistors wi ...
The thermal diffusivity of silicon DSi has been used to realize fully-CMOS frequency references. However, due to the temperature dependence of DSi, the accuracy of such frequency references is limited to about 1000 ppm (−55 °C to 125 °C, one-point trim) due to the inaccuracy of t ...
Due to their relatively stable phase shift over temperature, electrothermal filters (ETFs) with an oxide heat path have been used as on-chip phase references, e.g. for thermal diffusivity (TD) temperature sensors. However, previous oxide ETFs were limited to SOI processes, whose ...