Patent
Voltage and temperature compensated ring oscillator frequency stabilizer
TLDR
In this paper, a ring oscillator with a frequency stabilizing circuit produces compensated voltage signals in response to changes in supply voltage and temperature to modify the conductances of field effect transistors of the frequency stabilizer.Abstract:
An integrated circuit includes a ring oscillator with a frequency stabilizing circuit. The frequency stabilizing circuit produces compensated voltage signals in response to changes in supply voltage and temperature to modify the conductances of field-effect transistors of the frequency stabilizing circuit to compensate the conductive path of the discharge current of a capacitor from the ring oscillator in order to stabilize the oscillation frequency.read more
Citations
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Patent
Temperature independent oscillator
TL;DR: In this paper, an improved oscillator circuit 400 having a frequency that is substantially independent of temperature was proposed. But it is not suitable for use in an integrated circuit device to produce a clock signal, such as a refresh clock for a dynamic random access memory (DRAM) integrated circuit.
Patent
Voltage control of integrated circuits
TL;DR: In this paper, a method and apparatus for operating an integrated circuit in an electronic device by controlling the supply voltage to the integrated circuit (IC) is presented, where a parameter of the IC is measured and used to adjust the voltage.
Patent
Self refresh circuit for semiconductor memory device
Jong Ki Nam,Jong Doo Joo +1 more
TL;DR: In this paper, a self refresh circuit for a semiconductor memory device can reduce power consumption by varying the self refresh period according to a data holding time of a cell varied by a temperature.
Patent
Delay elements arranged for a signal controlled oscillator
TL;DR: In this article, a ring-type signal controlled oscillator comprising a series of active delay elements, each including a respective differential pair of transistors, is proposed to provide high frequency operation with substantially symmetric rise and fall time, while limiting spread in oscillation frequency and amplitude in relation to fabrication process variability and power supply variability.
Patent
Ring oscillator with frequency stabilization
TL;DR: In this paper, a simple circuit (350) is used to generate the controlled current that supplies all of the inversion stages (110) over a wide range of process, voltage, and temperature variations.
References
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Patent
Temperature-compensated ring oscillator circuit formed on a semiconductor substrate
Isamu Hayashi,Harufusa Kondo +1 more
TL;DR: In this paper, an improved ring oscillator is disclosed which can be formed in a semiconductor substrate, which includes inverters cascaded in a ring-like manner, and a diffused resistor R1 having a positive temperature coefficient and a polysilicon resistor R2 having a negative temperature coefficient for determining bias currents supplied to the inverters.
Patent
Semiconductor integrated circuit including ring oscillator of low current consumption
TL;DR: In this paper, the variable resistors and bias voltage output circuits form a VCC divider and regulate a bias voltage supplied to an oscillation circuit corresponding to each of the specified conditions.
Patent
Voltage compensating delay element
TL;DR: In this article, a signal-delaying capacitive circuit applied to a node in a microcircuit device is immunized against the variation of the supply voltage by a metal-oxide semiconductor connected in series between the node and the signaldelaying circuit.
Patent
Ring oscillator circuit having improved frequency stability with respect to temperature, supply voltage, and semiconductor process variations
TL;DR: In this article, a ring oscillator with an odd plurality of series-connected CMOS inverter stages includes first and second P-channel transistors and a resistor, and a source coupled to VDD and a gate coupled to ground.