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Proceedings ArticleDOI

A 1-V, self adjusting, 5-MHz CMOS RC-oscillator

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TLDR
A 5-MHz, self adjusting CMOS RC-oscillator for portable biomedical applications is presented and the total accuracy of the oscillator is within 5 % with component tolerances of 1 % in external elements R and C.
Abstract
A 5-MHz, self adjusting CMOS RC-oscillator for portable biomedical applications is presented. The oscillator is capable of operating. with a 1-V power supply and it features low current consumption (20 /spl mu/A @ 1 V) and low sensitivity to supply voltage and temperature variations. The total accuracy of the oscillator is within 5 % with component tolerances of 1 % in external elements R and C. The design was fabricated in a 0.35 /spl mu/m n-well standard digital CMOS process with threshold voltages of 0.5 V and -0.65 V. The design and the operation of the RC-oscillator with measurement results of fabricated chips are presented.

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Citations
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An On-Chip CMOS Relaxation Oscillator With Voltage Averaging Feedback

TL;DR: An on-chip CMOS relaxation oscillator with voltage averaging feedback using a reference proportional to supply voltage is presented and achieves 7x reduction in accumulated jitter (at 1500th cycle) as compared to a oscillator without VAF.
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A system-on-chip EPC Gen-2 passive UHF RFID tag with embedded temperature sensor

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Wavelength Locking and Thermally Stabilizing Microring Resonators Using Dithering Signals

TL;DR: This work presents the use of dithering signals as a broad method for automatic wavelength tuning and thermal stabilization of microring resonators and shows that this technique can be manifested in low-speed analog and digital circuitry, lending credence to its ability to be scaled to a complete photonic interconnection network.
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A 10MHz 80μW 67 ppm/°C CMOS reference clock oscillator with a temperature compensated feedback loop in 0.18μm CMOS

TL;DR: In this article, a 10MHz, 80μW reference clock oscillator is presented in 0.18μm CMOS, which employs a supply-regulated ring-oscillator in a temperature compensated feedback loop, which minimizes the frequency sensitivity to supply and temperature variations.
Proceedings ArticleDOI

Low-Voltage Low-Power CMOS Oscillator with Low Temperature and Process Sensitivity

TL;DR: The design of an on-chip RC-based oscillator, implemented in a standard 0.35 mum CMOS process, without any external component, is presented.
References
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Journal ArticleDOI

A variable delay line PLL for CPU-coprocessor synchronization

TL;DR: In this paper, a fully integrated phase-locked loop (PLL) is used to time-align the hi-Z/low-Z transitions of a CMOS CPU and its floating-point coprocessor.
Proceedings ArticleDOI

A 1-V 5 /spl mu/W CMOS-opamp with bulk-driven input transistors

TL;DR: In this paper, a low-power CMOS operational amplifier for biomedical instrumentation operating with a 1-V supply is described, where large input commonmode range (CMR) is achieved utilizing bulk-driven PMOS-transistors as an input differential pair of the opamp.
Proceedings ArticleDOI

A CMOS, self calibrating, 100 MHz RC-oscillator for ASIC applications

TL;DR: In this article, the design of a high performance cell-based CMOS rc-oscillator for ASIC applications is presented, which operates over a wide voltage range that includes 3.0 volt operation.