Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oscillator structure that produces high stability frequency under all conditions

A high stability, oscillator technology, applied in the direction of pulse generation, electric pulse generation, electrical components, etc., can solve the problems of large influence of temperature and voltage, inability to stabilize the oscillation frequency, etc., and achieve the effect of stable output frequency

Active Publication Date: 2015-12-02
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing oscillator structure is greatly affected by temperature and voltage, and cannot achieve stable oscillation frequency under various conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oscillator structure that produces high stability frequency under all conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Such as figure 1 As shown, P1, R1, and R2 form a current source reference, and P2 mirrors the current of P1 to charge C1. When the potential of C1 is higher than VR, the output of the comparator (CMP) is reversed, resulting in a Schmitt trigger with hysteresis. The output of the (Schmitttrigger) is inverted, controlling the conduction of the N1 tube, so that C1 is discharged. At this time, the potential of C1 drops, far below VR, and the output of the comparator (CMP) is inverted, resulting in a Schmitt trigger (Schmitttrigger) with hysteresis characteristics. ) output inversion, control the closing of N1 tube, P2 continues to charge C1 to complete an oscillation process, the above-mentioned process goes round and round, and the oscillator outputs a fixed frequency.

[0014] The biggest requirement for the frequency of the clock is to achieve the stability of the output frequency under various conditions, but due to the change of the power supply voltage, it will lead t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an oscillator structure capable of generating high-stability frequency in a full condition. The oscillator structure comprises a current reference current source, an image current charge-discharge circuit and a hysteresis comparator circuit. The current reference current source is composed of a P1, a R1 and a R2. The image current charge-discharge circuit is composed of a P2, a C1 and an N1. The hysteresis comparator circuit is composed of a comparator and a Schmidt comparator. A reference voltage VR generated among the P1, the R1 and the R2 is used as a comparing input end of a comparator CMP. The oscillator structure capable of generating the high-stability frequency in the full condition achieves the stability of output frequency of an oscillator in the range of full temperature and full working voltage.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuit circuit design. Background technique [0002] An oscillator (English: oscillator) is an electronic component used to generate repetitive electronic signals (usually sine waves or square waves). The circuit it constitutes is called an oscillator circuit. An electronic circuit or device that can convert direct current into an alternating current signal with a certain frequency. [0003] There are many types of oscillators, which can be divided into white-excited oscillators and other-excited oscillators according to the oscillation excitation method; can be divided into resistance-capacitance oscillators, inductance-capacitance oscillators, crystal oscillators, tuning fork oscillators, etc. according to the circuit structure; according to the output waveform Can be divided into sine wave, square wave, sawtooth wave and other oscillators. Widely used in electronics industry, medical...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/011H03K3/3565
Inventor 周平古炯均
Owner SHANGHAI HUAHONG GRACE SEMICON MFG CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com