An On-chip Calibration Technique for Reducing Supply Voltage Sensitivity in Ring Oscillators

2007 ◽  
Vol 42 (4) ◽  
pp. 775-783 ◽  
Author(s):  
Ting Wu ◽  
Kartikeya Mayaram ◽  
Un-Ku Moon
Sensors ◽  
2015 ◽  
Vol 15 (2) ◽  
pp. 4408-4424 ◽  
Author(s):  
Duo Sheng ◽  
Hsiu-Fan Lai ◽  
Sheng-Min Chan ◽  
Min-Rong Hong

2019 ◽  
Vol 28 (10) ◽  
pp. 1950162 ◽  
Author(s):  
Peiqing Han ◽  
Niansong Mei ◽  
Zhaofeng Zhang

A 36-kHz frequency locked on-chip oscillator is proposed, the proportional-to-absolute temperature (PTAT) current and voltage generator is presented to eliminate conventional temperature-compensated resistors. The resistorless approach reduces the process variation of frequency and the chip area. The oscillator is fabricated in 0.18-[Formula: see text]m standard CMOS process with an active area of 0.072[Formula: see text]mm2. The temperature coefficient of frequency is 48[Formula: see text]ppm/∘C at best and 82.5[Formula: see text]ppm/∘C on average over [Formula: see text]–70∘C and the frequency spread is 1.43% ([Formula: see text]/[Formula: see text] without calibration. The supply voltage sensitivity is 1.8%/V in the range from 0.65[Formula: see text]V to 1[Formula: see text]V and the power consumption is 95[Formula: see text]nW under the supply voltage of 0.65[Formula: see text]V.


2005 ◽  
Vol 870 ◽  
Author(s):  
Stijn De Vusser ◽  
Soeren Steudel ◽  
Kris Myny ◽  
Jan Genoe ◽  
Paul Heremans

AbstractIn this work, we report on high-performance low voltage pentacene Organic Thin-Film Transistors (OTFT's) and circuits. Inverters and ring oscillators have been designed and fabricated. At 15 V supply voltage, we have observed invertors showing a voltage gain of 9 and an output swing of more than 13 V. As for the ring oscillators, oscillations started at supply voltages as low as 8.5 V. At a supply voltage of only 15 V, a stage delay time of 3.3 νs is calculated from experimental results.We believe that these results show for the first time a high speed ring oscillator at relatively low supply voltages. The required supply voltages can be obtained by rectification using an organic (pentacene) diode. These results may have an important impact on the realization of RF-ID tags: by integrating our circuits with an organic diode, the fabrication of organic RF-ID tags comes closer.


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