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This paper describes a high precision all digital on-chip oscillator. This architecture can achieve absolute precisions beyond 0.1% with only one trim. Once trimmed, the oscillator can produce any frequency within the programmable range with similar accuracy. If there are multiple oscillators on same die, trimming one oscillator will be sufficient to trim all the oscillators at multiple frequencies...
This paper proposes a novel integrated oscillator topology based on a transmission line. The frequency is extracted from the delay of the transmission line, which is intrinsically independent of temperature and supply variations. The architecture for the oscillator, guidelines for the design of the transmission line as well as the different building blocks are presented. The architecture is based...
In this paper we present a temperature sensor based on a ring oscillator. The ring oscillator uses the CMOS thyristor delay element and has an extremely low power consumption of about 47nW at room temperature with a supply of 0.5V. Low power operation is achieved by eliminating the use of power hungry analog to digital converters (ADCs) at the sensor output. As shown the frequency increases linearly...
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