The utility model discloses a novel electronic cigarette control chip which is characterized in that a capacitance cigarette holder device is connected with a cigarette holder capacitance detection device through a constant current generating circuit and the cigarette holder capacitance detection device is connected with a driving control circuit. According to the novel electronic cigarette control chip, the sensitivity and the reliability of an electronic cigarette chip are effectively improved, so that smoke is generated by an electronic cigarette with small suction force, the phenomenon of false triggering smoking is avoided, and a series of problems that due to the fact that smoking motion of an existing electronic cigarette chip is continuously and mistakenly triggered for a long time, an electronic cigarette is over heat, a plastic outer shell of the electronic cigarette is burned, the service life of the electronic cigarette is shortened, and the good product rate is low are solved.

Novel electronic cigarette control chip

The invention discloses an anti-process-vibration on-chip oscillator of a self-trimming integrated circuit. The anti-process-vibration on-chip oscillator comprises a basic oscillation unit, a to-be-trimmed oscillation unit and a self-trimming logic control unit which are integrated on the same chip, wherein the basic oscillation unit is used for generating a basic pulse; the to-be-trimmed oscillation unit is used for generating an output pulse; and the self-trimming logic control unit is used for receiving the basic pulse and the output pulse, sending a corresponding trimming signal to the to-be-trimmed oscillation unit according to the received basic pulse and output pulse, and controlling the to-be-trimmed oscillation unit to performing frequency trimming on the output pulse. The basic oscillation unit which can be integrated in the chip provides the basic pulse required by the frequency trimming, and is closed after the trimming is completed, so that the on-chip self-trimming of the output frequency is achieved, the off-chip trimming is prevented, and the preparation cost of the chip is reduced; and further, the hardware structure is simple, the implementation is easy, and the basic oscillation unit is closed when the trimming is not performed, so that the power consumption of the chip is reduced.

Anti-process-vibration on-chip oscillator of self-trimming integrated circuit

The invention relates to a high-precision high-frequency ring oscillator circuit. The oscillator circuit comprises a frequency-voltage convertor, a filter, a frequency divider and a voltage-controlled oscillator. The frequency-voltage convertor is connected to the filter in an output mode, the filter is connected to the voltage-controlled oscillator in an output mode, the voltage-controlled oscillator is connected to the outer side of the circuit in an output mode to provide high-frequency oscillation, meanwhile feedback output is connected to the frequency divider, the frequency divider is connected to the frequency-voltage convertor in an output mode, and the frequency-voltage convertor outputs control signals by comparing the input signal frequency of the frequency divider and the set frequency. Compared with the prior art, the high-precision high-frequency ring oscillator circuit has the advantages of being small in design difficulty, high in design efficiency, easy to use, low in cost and the like.

High-precision high-frequency ring oscillator circuit

The invention discloses a temperature sensor circuit with a built-in clock, which belongs to the technical field of electronic circuits. Firstly, a band-gap reference module is used to generate band-gap reference voltage and positive temperature coefficient voltage; then, two identical voltage frequency conversion circuits are used for converting the positive temperature coefficient voltage and the band-gap reference voltage to a positive temperature coefficient voltage frequency and a band-gap reference voltage frequency; and finally, counting is carried out through two counters, after full counting of the second counter, the first counter stops counting through feedback signals, and the size of a temperature value is acquired through acquiring the ratio of the positive temperature coefficient voltage to the band-gap reference voltage. The designed temperature sensor has a simple structure, and low power consumption can be achieved; a chopper operational amplifier is used in the band-gap reference module for eliminating errors caused by operational amplifier maladjustment, a system chopper module is added behind the band-gap reference module for reducing errors of comparator maladjustment voltage on temperature detection, the second counter generates first clock signal and second clock signal, and advantages of a wide frequency range, adjustable clock frequency and the like are achieved.

Temperature sensor circuit with built-in clock

The invention provides a high-precision oscillator insensitive to PVT. The high-precision oscillator comprises a first metal-oxide semiconductor field-effect transistor M1, a second metal-oxide semiconductor field-effect transistor M2, a third metal-oxide semiconductor field-effect transistor M3, a first bipolar transistor Q1, a first resistor R1, a second resistor R2, a fourth metal-oxide semiconductor field-effect transistor M4 and a first comparator. According to the high-precision oscillator insensitive to PVT provided by the invention, positive and negative temperature coefficients are introduced into a circuit architecture and can approximately cancel each other, and moreover, the relationship between an output clock and the power supply voltage can be eliminated, and thus, at each process angle and under each power supply voltage, the clock with more accurate precision can be output within the entire temperature range.

High-precision oscillator insensitive to PVT

The invention discloses a high-precision relaxation oscillator capable of being trimmed and regulated The high-precision relaxation oscillator comprises an oscillation generator, a high-precision current bias generator, a voltage regulator and a driving and output part, wherein the high-precision current bias generator provides the bias for a constant current source in the oscillation generator, the voltage regulator generates two threshold levels for a comparator in the oscillation generator, and the oscillation generator utilizes capacitor charging and discharging to generate oscillation waveform to be provided for the driving and output part The high-precision relaxation oscillator has the positive effects that through the realization of the high-precision bias current and the trimming and regulation of a register of the comparison threshold levels, the process deviation and the oscillator frequency change during the power supply voltage or environment temperature change can be reduced, and the value after the frequency modification can meet the designed precision requirements

High-precision relaxation oscillator capable of being trimmed and regulated

The utility model discloses a correctable and adjustable high-precision relaxation oscillator. The correctable and adjustable high-precision relaxation oscillator comprises an oscillation generator, a high-precision current bias generator, a voltage regulator, and a driving and output part, wherein the high-precision current bias generator provides bias for a constant current source in the oscillation generator, and the voltage regulator generates two threshold levels for a comparator in the oscillation generator; and the oscillation generator generates oscillation waveform through utilizing the charging and discharging of a capacitor and provides the oscillation waveform to the driving and output part. The correctable and adjustable high-precision relaxation oscillator of the utility model has the advantages that through the realization of high precision bias current and the correction and adjustment of a register which performs comparison on the threshold levels, process deviations and changes of the frequency of the oscillator when power source voltage or environment temperature changes can be decreased, such that corrected frequency values can satisfy accuracy requirements of design.

Hu Yangchuan

Papers

High-precision relaxation oscillator capable of being trimmed and regulated

Correctable and adjustable high-precision relaxation oscillator