A dedicated integrated circuit for crystal oscillator

A technology of crystal oscillators and integrated circuits, applied in power oscillators, electrical components, etc.

Inactive Publication Date: 2019-09-20
西安拉姆达电子科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a miniaturized and hardpacked application-specific integrated circuit that can meet the different output requirements of crystal oscillators, so as to solve the problem that crystal oscillators have a wide frequency range, tiny packages, and mass production. The reliability of the line in the process and other issues

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
  • A dedicated integrated circuit for crystal oscillator
  • A dedicated integrated circuit for crystal oscillator
  • A dedicated integrated circuit for crystal oscillator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.

[0034] Embodiment, an application specific integrated circuit of a crystal oscillator

[0035] The overall circuit structure principle of the ASIC of the crystal oscillator in this embodiment is as follows: figure 1 Shown: There are voltage stabilizing circuit, oscillation amplification and output buffer circuit and temperature control part circuit. Each circuit completes its own function independently and jointly meets the functional requirements of the crystal oscillator.

[0036] figure 2 Shows the circuit structure of the oscillation amplification and output buffer circuit of this embodiment

[0037] figure 2 Among them, Q is a triode tube, and R is a resistor. Q1, Q2 and Q3 are three high frequency low noise

[0038] Acoustic low-power triodes are respectively connected in series with resistors to form three groups of circuits:

[0039] The fir...

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 relates to a dedicated integrated circuit for a crystal oscillator. The integrated circuit is composed of a voltage stabilizing circuit, an oscillation amplification and output buffer circuit and a temperature control circuit. The oscillation amplification and output buffer circuit is characterized in that a triode A and an external element form a parallel Colpitts oscillation level; a triode B and the triode A are directly coupled to amplify an oscillation signal; and resistance-capacitance coupling is formed by the triode C and the triode B to form radio frequency or form sine wave output. The temperature control circuit is composed of a single-voltage operational amplifier with low power consumption and low noise and two fixed resistors. The integration method of the circuit comprises the following steps of: integrating most components in the circuit, and finishing a bipolar process at one time. The device has the advantages of being convenient to produce and low in cost, and for crystal oscillators with different voltage requirements, only one external element needs to be adjusted. And miniaturization of the integrated circuit is realized.

Description

technical field [0001] The invention relates to integrated circuit technology, in particular to an application-specific integrated circuit suitable for crystal oscillators. Background technique [0002] Currently on the market, there are three types of ASICs suitable for crystal oscillators: [0003] 1. Ordinary crystal integrated circuits, such as SM5022 of NPC series in Japan, [0004] SM5021, etc., its advantage is fully integrated, its disadvantage is: the upper limit of the working frequency of SM5022 is only 30MH 2, The upper limit of the working frequency of SM5021 is only 70MH 2 , and the following five types cannot reach the upper limit of the frequency, the working frequency of SM5021AA is only 20-30MH2; the working frequency of SM5021AB is only 30-43MH 2 ;The working frequency of SM5021AC is only 40-55MH 2 ;The working frequency of SM5021AD is only 50-70MH 2 ;The working frequency of SM5021AE is only 50-70MH 2 , (3.3V). [0005] 2. VC-TCXO dedicated circuit...

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 Applications(China)
IPC IPC(8): H03B5/36
CPCH03B5/36
Inventor 窦功禄
Owner 西安拉姆达电子科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap