A resistor-capacitor oscillation circuit includes a first group of inverters, a second group of inverters, a latch, a delay circuit, and a third group of inverters. The first group of the inverters is connected to the delay circuit and is configured to generate a first signal A and a second signal B. An input end of the second group of the inverters is connected to an enable signal EN. An output end of the second group of the inverters is connected to the latch. An output end of the delay circuit is connected to the latch. The latch is connected to the third group of the inverters and includes a first output end and a second output end. After a first clock signal FB is driven by the third group of the inverters, an output signal CLK is output by an output end of the third group.

A resistor-capacitor oscillation circuit includes a first group of inverters, a second group of inverters, a latch, a delay circuit, and a third group of inverters. The first group of the inverters is connected to the delay circuit and is configured to generate a first signal A and a second signal B. An input end of the second group of the inverters is connected to an enable signal EN. An output end of the second group of the inverters is connected to the latch. An output end of the delay circuit is connected to the latch. The latch is connected to the third group of the inverters and includes a first output end and a second output end. After a first clock signal FB is driven by the third group of the inverters, an output signal CLK is output by an output end of the third group.

An integrated circuit including a functional circuit including at least one swapping circuit node, multiple duplicate electronic circuits, and a switch circuit. The duplicate electronic circuits are integrated in close proximity with each other each including at least one electronic device that is susceptible to RTN. The switch circuit electrically couples a different selected subset of at least one of the duplicate electronic circuits to the at least one swapping circuit node for each of successive switching states during operation of the functional circuit. A method of reducing noise including selecting a subset of the duplicate electronic circuits, electrically coupling the selected duplicate electronic devices to at least one swapping circuit node of a functional circuit, and repeating the selecting and electrically coupling in successive switching states during operation of the functional circuit for different subsets of the duplicate electronic circuits.

An integrated circuit including at least one circuit node, multiple duplicate circuit blocks integrated on the integrated circuit in close proximity with each other, each including at least one device that is susceptible to random telegraph noise (RTN), and a switch circuit that swaps electrical coupling of the duplicate circuit blocks, one at a time, to the at least one circuit node in sequential cycles of a clock signal. The duplicate circuit blocks may be large functional blocks, such as an oscillator or a comparator or the like, or limited to circuits including RTN susceptible devices, such as differential pairs or the like. Each duplicate circuit block may include any number of connections for coupling to corresponding circuit nodes. The swapping may further include chopping in which multiple inputs are swapped with each other while multiple outputs are swapped with each other in consecutive clock cycles.

An integrated circuit including at least one circuit node, multiple duplicate circuit blocks integrated on the integrated circuit in close proximity with each other, each including at least one device that is susceptible to random telegraph noise (RTN), and a switch circuit that swaps electrical coupling of the duplicate circuit blocks, one at a time, to the at least one circuit node in sequential cycles of a clock signal. The duplicate circuit blocks may be large functional blocks, such as an oscillator or a comparator or the like, or limited to circuits including RTN susceptible devices, such as differential pairs or the like. Each duplicate circuit block may include any number of connections for coupling to corresponding circuit nodes. The swapping may further include chopping in which multiple inputs are swapped with each other while multiple outputs are swapped with each other in consecutive clock cycles.

Provided is a circuit device including: an oscillation circuit oscillating a vibrator, in which the oscillation circuit includes a variable capacitance circuit having a first variable capacitance element and a second variable capacitance element constituted by a first transistor and a second transistor, and a reference voltage supply circuit. The first reference voltage is supplied to a first gate of the first transistor and a capacitance control voltage is supplied to a first impurity region of the first transistor, the second reference voltage is supplied to a second gate of the second transistor and the capacitance control voltage is supplied to a second impurity region of the second transistor, and the capacitance control voltage is supplied to a first common impurity region of the first transistor and the second transistor.

Provided is a circuit device including: an oscillation circuit oscillating a vibrator, in which the oscillation circuit includes a variable capacitance circuit having a first variable capacitance element and a second variable capacitance element constituted by a first transistor and a second transistor, and a reference voltage supply circuit. The first reference voltage is supplied to a first gate of the first transistor and a capacitance control voltage is supplied to a first impurity region of the first transistor, the second reference voltage is supplied to a second gate of the second transistor and the capacitance control voltage is supplied to a second impurity region of the second transistor, and the capacitance control voltage is supplied to a first common impurity region of the first transistor and the second transistor.

Provided is a circuit device including: a first terminal electrically coupled to one end of a vibrator; a second terminal electrically coupled to the other end of the vibrator; a first coupling wiring electrically coupled to the first terminal; a second coupling wiring electrically coupled to the second terminal; an oscillation circuit having a drive circuit for driving the vibrator via the first coupling wiring and the second coupling wiring, and oscillating the vibrator; and a first capacitor having a metal-insulator-metal (MIM) structure of which one electrode is electrically coupled to the first coupling wiring. The first coupling wiring and the first capacitor having the MIM structure overlap each other in plan view in a direction orthogonal to a substrate on which a circuit element is formed.

Provided is a circuit device including: a first terminal electrically coupled to one end of a vibrator; a second terminal electrically coupled to the other end of the vibrator; a first coupling wiring electrically coupled to the first terminal; a second coupling wiring electrically coupled to the second terminal; an oscillation circuit having a drive circuit for driving the vibrator via the first coupling wiring and the second coupling wiring, and oscillating the vibrator; and a first capacitor having a metal-insulator-metal (MIM) structure of which one electrode is electrically coupled to the first coupling wiring. The first coupling wiring and the first capacitor having the MIM structure overlap each other in plan view in a direction orthogonal to a substrate on which a circuit element is formed.

An oscillation device includes an oscillator and a logic circuit. The oscillator generates an output oscillation signal. The logic circuit controls the oscillator according to the output oscillation signal, such that the output oscillation signal includes two different oscillation periods. The oscillation device may be used as a temperature-to-frequency converter without any bandgap reference circuit.