WO2006008908A1 - ジッタ印加回路、及び試験装置 - Google Patents
ジッタ印加回路、及び試験装置 Download PDFInfo
- Publication number
- WO2006008908A1 WO2006008908A1 PCT/JP2005/011589 JP2005011589W WO2006008908A1 WO 2006008908 A1 WO2006008908 A1 WO 2006008908A1 JP 2005011589 W JP2005011589 W JP 2005011589W WO 2006008908 A1 WO2006008908 A1 WO 2006008908A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- jitter
- frequency
- phase
- circuit
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/156—Arrangements in which a continuous pulse train is transformed into a train having a desired pattern
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/30—Marginal testing, e.g. by varying supply voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/31727—Clock circuits aspects, e.g. test clock circuit details, timing aspects for signal generation, circuits for testing clocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/3183—Generation of test inputs, e.g. test vectors, patterns or sequences
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
Definitions
- the present invention relates to a jitter injection circuit that generates a clock signal including a phase jitter component according to given jitter data, and a test apparatus that tests the jitter tolerance of an electronic device.
- the present invention also relates to the following Japanese patent application. For designated countries where incorporation by reference of documents is permitted, the contents described in the following application are incorporated into this application by reference and made a part of the description of this application.
- a jitter applying device that controls the delay amount of a variable delay circuit that outputs the delayed clock signal according to the jitter to be given is known.
- the applicant of the present application has proposed a jitter applying device that controls the delay amount of a variable delay circuit using a shift register in accordance with the jitter to be given (see, for example, Patent Document 1).
- a jitter applying apparatus using a variable delay circuit see, for example, Patent Document 2.
- Patent Document 1 Japanese Patent Laid-Open No. 5-235718
- Patent Document 2 Japanese Patent Laid-Open No. 2003-125010
- an object of the present invention is to provide a jitter injection circuit and a test apparatus that can solve the above-described problems. This object is achieved by a combination of features described in the independent claims.
- the dependent claims define further advantageous specific examples of the present invention.
- a jitter applying circuit for generating a clock signal including a phase jitter component corresponding to given jitter data, and a given reference signal
- the oscillation frequency of the PLL circuit is controlled based on the low-frequency component of the jitter data, the PLL circuit that generates the oscillation signal according to the frequency, the variable delay circuit that outputs the clock signal that delayed the oscillation signal, and the low-frequency component of the jitter data.
- a low-frequency application unit that applies a low-frequency component of the phase jitter component to the signal, and a high-frequency signal that controls the delay amount in the variable delay circuit based on the high-frequency component of the jitter data and applies the high-frequency component of the phase jitter component to the clock signal
- a jitter injection circuit including an adder.
- the PLL circuit is a voltage-controlled oscillator that generates an oscillation signal having a frequency according to a given control voltage, and a control based on a comparison result between the phase of the given reference signal and the phase of the oscillation signal. It has a phase comparator that generates voltage and a low-pass filter that removes the high-frequency component of the control voltage and applies it to the voltage-controlled oscillator, and the low-frequency application unit responds to the jitter data to the control voltage generated by the phase comparator. The voltage may be superimposed and input to the low-pass filter.
- the high frequency application unit may include a high pass filter that extracts a high frequency component of jitter data.
- the low frequency application unit may have a low pass filter that extracts a low frequency component of jitter data.
- the jitter data is multi-bit digital data, and the high frequency application unit controls the delay amount in the variable delay circuit based on the lower bits of a predetermined number of digits of the jitter data, and the low frequency application unit transmits the jitter data. Control the oscillation frequency of the PLL circuit based on the upper bits of the specified number of digits.
- the PLL circuit generates an oscillation signal having a frequency corresponding to a given control voltage, and inputs it to the variable delay circuit, the phase of the given reference signal, and a variable delay
- a phase comparator that generates a control voltage based on the result of comparison with the phase of the clock signal output from the circuit, and a low-pass filter that removes a high-frequency component of the control voltage and applies it to the voltage-controlled oscillator may be included.
- a test apparatus for testing the jitter tolerance of an electronic device, a pattern generator for generating a test pattern for testing the electronic device, A timing generator that generates a clock signal including a corresponding phase jitter component, a waveform shaper that inputs a test signal based on the test pattern to the electronic device at a timing corresponding to the clock signal, and an electronic device that corresponds to the test signal
- the timing generator includes a PLL circuit that generates an oscillation signal according to a given reference signal, and a delay circuit that delays the oscillation signal.
- the oscillation frequency of the PLL circuit is controlled to A low-frequency application unit that applies a low-frequency component of the jitter component and a delay amount in the variable delay circuit are controlled based on the high-frequency component of the jitter data, and the high-frequency component of the phase jitter component is applied to the clock signal.
- a test apparatus having an application unit is provided.
- FIG. 1 is a diagram showing an example of a configuration of a jitter injection circuit 100 according to an embodiment of the present invention.
- FIG. 2 is a diagram showing another example of the configuration of the jitter injection circuit 100.
- FIG. 2 is a diagram showing another example of the configuration of the jitter injection circuit 100.
- FIG. 3 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- FIG. 3 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- FIG. 4 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- FIG. 4 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- FIG. 5 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- FIG. 5 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- FIG. 6 is a diagram showing an example of a configuration of a test apparatus 200 according to another embodiment of the present invention.
- FIG. 1 is a diagram showing an example of the configuration of the jitter injection circuit 100 according to the embodiment of the present invention.
- the jitter injection circuit 100 generates a clock signal including a phase jitter component corresponding to given jitter data, and outputs a clock signal including the phase jitter component at a desired phase.
- the jitter applying circuit 100 includes a PLL (Phase Lock Loop) circuit 10, digital / analog converters 40 and 42 (hereinafter referred to as DACs 40 and 42), a noise filter 44, a low-pass filter 46, and a variable delay circuit 30.
- the phase jitter component to be applied to the clock signal and the delay amount for controlling the phase of the clock signal are given as digital jitter data and delay data.
- the PLL circuit 10 is a circuit that generates an oscillation signal in accordance with a given reference signal, and includes a phase comparator 12, superposition units 14, 16, a low-pass filter 18, a voltage-controlled oscillator 20, and a frequency divider. 22
- the voltage controlled oscillator 20 generates an oscillation signal having a frequency corresponding to a given control voltage.
- the voltage controlled oscillator 20 may be, for example, a ring oscillator or an LC tank circuit.
- the phase comparator 12 generates a control voltage based on a comparison result between the phase of the supplied reference signal and the phase of the oscillation signal generated by the voltage controlled oscillator 20.
- the phase comparator 12 compares the phase of the oscillation signal divided by the frequency divider 22 with a predetermined division ratio with the phase of the reference signal.
- the frequency divider 22 divides the oscillation signal by a frequency division ratio in which the period of the oscillation signal supplied to the phase comparator 12 is substantially the same as the period of the reference signal.
- the superimposing unit 14 adds the voltage output from the DAC 42 to the control voltage output from the phase comparator 12.
- the DAC 42 receives delay data for delaying the clock signal output from the jitter injection circuit 100 for a predetermined time, and supplies a voltage corresponding to the delay data to the superposition unit 14.
- the DAC 42 may receive a fixed value of delay data.
- the superimposing unit 16 superimposes the voltage output from the low pass filter 46 on the control voltage.
- the DAC 40 outputs a voltage corresponding to the given jitter data, and the low pass filter 46 supplies the low frequency component of the voltage output from the DAC 40 to the superimposing unit 16. That is, the DAC 40, the low-pass filter 46, and the superimposing unit 16 control the oscillation frequency of the PLL circuit 10 based on the low frequency component of the jitter data, and apply the low frequency component of the phase jitter component to the oscillation signal. Functions as an application unit.
- the low-pass filter 46 supplies only the frequency component that can be followed by the voltage-controlled oscillator 20 among the frequency components of the voltage output from the DAC 40 to the superposition unit 16.
- the frequency band through which the one-pass filter 46 passes is determined in advance according to the characteristics of the PLL circuit 10. Further, the low-pass filter 46 may shift the level of the voltage to be passed to a level suitable for the control of the voltage controlled oscillator 20.
- the low-pass filter 18 removes the high-frequency component of the control voltage on which the voltage corresponding to the low-frequency component of the delay data and the phase jitter component is superposed, and gives it to the voltage-controlled oscillator 20.
- the frequency band that the low-pass filter 18 passes is the same as that of the low-pass filter 18, and only the frequency component corresponding to the characteristics of the voltage-controlled oscillator 20 is given to the voltage-controlled oscillator 20.
- the jitter applying circuit 100 when the control voltage on which the voltage corresponding to the low-frequency applying unit force jitter data is superimposed is input to the low-pass filter 18, like the jitter applying circuit 100 described in this example, the jitter applying circuit 100 The low-pass filter 46 may not be provided. When the voltage corresponding to the jitter data is superimposed on the voltage output from the low frequency filter 46, the jitter applying circuit 100 preferably includes the low frequency filter 46.
- the variable delay circuit 30 generates a clock signal obtained by delaying the oscillation signal output from the PLL circuit 10.
- the variable delay circuit 30 is a circuit that delays a signal for a time corresponding to an applied analog voltage.
- the jitter injection circuit 100 generates the variable delay circuit 30 by controlling the delay amount of the variable delay circuit 30 according to the high frequency component of the jitter data.
- the high frequency component of the phase jitter component to be applied to the clock signal to be applied is applied.
- the response time of the variable delay circuit 30 when the delay amount setting of the variable delay circuit 30 is changed is preferably shorter than the response time of the PLL circuit 10 when the control voltage changes.
- the high pass filter 44 controls the delay amount of the variable delay circuit 30 based on the high frequency component of the voltage output from the DAC 40. That is, the DAC 40 and the high-pass filter 44 function as a high frequency application unit that controls the delay amount in the variable delay circuit 30 based on the high frequency component of the jitter data and applies the high frequency component of the phase jitter component to the clock signal.
- the high-pass filter 44 is a frequency band component removed by the low-pass filter 46 that passes only the frequency component that can be followed by the variable delay circuit 30 out of the frequency component of the voltage output from the DAC 40. Let's pass through.
- the frequency band that the high-pass filter 44 passes is determined in advance according to the characteristics of the PLL circuit 10 and the like. Further, the high pass filter 44 may shift the level of the voltage to be passed to a level suitable for the control of the variable delay circuit 30.
- the jitter injection circuit 100 in this example separates the low-frequency component and the high-frequency component of the phase jitter component to be applied, and applies them in a circuit corresponding to the frequency band of each phase jitter component. For this reason, a broadband phase jitter component can be applied.
- the amplitude of the high frequency component of the phase jitter component is smaller than the amplitude of the low frequency component.
- a small amplitude jitter component is applied using the variable delay circuit 30 and a large amplitude jitter component is applied using the voltage controlled oscillator 20.
- a phase jitter component can be applied.
- the high frequency application unit performs a delay amount in the variable delay circuit 30 based on lower bits of a predetermined number of digits of jitter data.
- the low-frequency applying unit may control the oscillation frequency of the PLL circuit 10 based on the upper bits of a predetermined number of digits of jitter data.
- the jitter injection circuit 100 may not include the DAC 40.
- the low-pass filter 46 extracts the upper bits of the given jitter data and supplies a voltage corresponding to the data of the upper bits to the superimposing unit 16.
- the number of bits extracted by the low-pass filter 46 is It is determined according to the response characteristic of the pressure controlled oscillator 20.
- the high pass filter 44 extracts lower bits of given jitter data, and controls the delay amount of the variable delay circuit 30 according to the data of the lower bits.
- the high pass filter 44 preferably supplies the variable delay circuit 30 with a voltage corresponding to the data of the lower bits. The number of bits extracted by the high-pass filter 44 is determined according to the response characteristic of the variable delay circuit 30.
- FIG. 2 is a diagram showing another example of the configuration of the jitter injection circuit 100.
- the clock signal output from the variable delay circuit 30 is fed back to the phase comparator 12 via the frequency divider 22. That is, the phase comparator 12 generates a control voltage based on the comparison result between the phase of the supplied reference signal and the phase of the clock signal output from the variable delay circuit 30.
- the other configuration is the same as that of the jitter injection circuit 100 described in FIG. With such a configuration, even when the delay characteristics in the variable delay circuit 30 fluctuate over time due to self-heating, external heat, or the like, the control voltage that causes the phase comparator 12 to reduce the fluctuation is used. Therefore, the influence of the change can be reduced.
- FIG. 3 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- the jitter injection circuit 100 in this example includes a PLL circuit 10, a DAC 40, and a DAC 42.
- the functions of the PLL circuit and the DAC 42 are the same as those described with the same reference numerals in FIG.
- the DAC 40 supplies a voltage corresponding to the given jitter data to the superimposing unit 16.
- a clock signal including a phase jitter component can be output with a desired phase according to delay data with a simple configuration.
- FIG. 4 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- the jitter injection circuit 100 in this example includes a PLL circuit 10, DACs 40 and 42, a high-pass filter 44, and a low-pass filter 46.
- the functions of the PLL circuit 10, the DACs 40 and 42, and the low-pass filter 46 are the same as those described with the same reference numerals in FIG.
- the high-pass filter 44 is based on the high-frequency component of the voltage output from the DAC 40. Controls the frequency in the controlled oscillator 20. According to the jitter injection circuit 100 in this example, since a control voltage corresponding to the high-frequency component of the phase jitter component to be applied is supplied to the voltage controlled oscillator 20 without going through the low-pass filter 18, wide-band phase jitter is applied. It can be done.
- FIG. 5 is a diagram showing still another example of the configuration of the jitter injection circuit 100.
- the jitter injection circuit 100 in this example includes a PLL circuit 10, DACs 40 and 42, and a plurality of variable delay circuits (32, 34, and 36) provided in series.
- the PLL circuit 10 generates an oscillation signal having a predetermined frequency, and the DAC 42 controls the phase of the oscillation signal according to the given delay data.
- the plurality of variable delay circuits delay the oscillation signal with different delay resolutions.
- the variable delay circuit 34 has a delay resolution whose maximum delay amount is approximately equal to the delay resolution of the variable delay circuit 32 and is smaller than the delay resolution of the variable delay circuit 32.
- the variable delay circuit 36 has a delay resolution that is approximately equal to the delay resolution of the variable delay circuit 34 in terms of the maximum delay amount, and is smaller than the delay resolution of the variable delay circuit 34.
- the DAC 40 controls the delay amount of each variable delay circuit (32, 34, 36) according to the given jitter data, so that the plurality of variable delay circuits (32, 34, 36) A phase jitter component is applied to the output clock signal.
- the jitter injection circuit 100 divides the voltage output from the DAC 40 into a plurality of frequency bands corresponding to the plurality of variable delay circuits (32, 34, 36), and each variable delay circuit (32, 34, 36). ) May be further provided.
- means for extracting the low frequency component of the voltage output from the DAC 40 and controlling the variable delay circuit 32, means for extracting the medium frequency component of the voltage output from the DAC 40 and controlling the variable delay circuit 34, and DAC 40 A means for extracting a high frequency component of the output voltage and controlling the variable delay circuit 36 may be further provided.
- FIG. 6 is a diagram showing an example of the configuration of a test apparatus 200 according to another embodiment of the present invention.
- the test device 200 is a device for testing the jitter tolerance of the electronic device 300 such as a semiconductor circuit or a receiving device in high-speed serial communication, and includes a no-turn generator 210, a waveform shaper 220, a determination unit 230, and a timing generator. 240 is provided.
- the pattern generator 210 generates a test pattern for testing the electronic device 300.
- the test pattern is an array of numerical values of 1 or 0, for example.
- the timing generator 240 generates a clock signal including a phase jitter component corresponding to given jitter data.
- the timing generator 240 is the jitter injection circuit 100 described with reference to FIGS.
- the waveform shaper 220 inputs a test signal based on the test pattern to the electronic device 300 at a timing according to the clock signal.
- a test signal whose voltage level changes according to the test pattern is generated at a timing based on the clock signal and input to the electronic device 300.
- the determination unit 230 determines the jitter tolerance of the electronic device 300 according to the output signal output from the electronic device 300 according to the test signal. For example, for each amplitude of the phase jitter component applied by the timing generator 240, the output signal output from the electronic device 300 is compared with the expected value signal provided from the pattern generator 210, and for each amplitude of the phase jitter component, It is determined whether or not the operation of the electronic device 300 is normal.
- the timing generator 240 can easily apply a wide-band, high-resolution, large-amplitude phase jitter component to the clock signal, so that the electronic device 300 can be tested. Can be performed with high accuracy.
- the jitter tolerance is an important test item, so the test apparatus 200 in this example is particularly effective.
- a wide-band, high-resolution, large-amplitude phase jitter component can be easily applied to the clock signal.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Manipulation Of Pulses (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112005001762T DE112005001762T5 (de) | 2004-07-22 | 2005-06-24 | Jittereinfügungsschaltung und Prüfvorrichtung |
| US11/178,226 US7287200B2 (en) | 2004-07-22 | 2005-07-08 | Jitter applying circuit and test apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-214888 | 2004-07-22 | ||
| JP2004214888A JP4425735B2 (ja) | 2004-07-22 | 2004-07-22 | ジッタ印加回路、及び試験装置 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/178,226 Continuation US7287200B2 (en) | 2004-07-22 | 2005-07-08 | Jitter applying circuit and test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006008908A1 true WO2006008908A1 (ja) | 2006-01-26 |
Family
ID=35785031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/011589 Ceased WO2006008908A1 (ja) | 2004-07-22 | 2005-06-24 | ジッタ印加回路、及び試験装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7287200B2 (ja) |
| JP (1) | JP4425735B2 (ja) |
| KR (1) | KR20070043843A (ja) |
| DE (1) | DE112005001762T5 (ja) |
| TW (1) | TWI353115B (ja) |
| WO (1) | WO2006008908A1 (ja) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI277748B (en) * | 2005-08-29 | 2007-04-01 | Via Tech Inc | Time jitter injection testing circuit and related testing method |
| JP4508072B2 (ja) * | 2005-10-18 | 2010-07-21 | 株式会社デンソー | シリアル通信回路及びa/d変換システム |
| US8327204B2 (en) * | 2005-10-27 | 2012-12-04 | Dft Microsystems, Inc. | High-speed transceiver tester incorporating jitter injection |
| US7394277B2 (en) * | 2006-04-20 | 2008-07-01 | Advantest Corporation | Testing apparatus, testing method, jitter filtering circuit, and jitter filtering method |
| US7681091B2 (en) * | 2006-07-14 | 2010-03-16 | Dft Microsystems, Inc. | Signal integrity measurement systems and methods using a predominantly digital time-base generator |
| US7813297B2 (en) * | 2006-07-14 | 2010-10-12 | Dft Microsystems, Inc. | High-speed signal testing system having oscilloscope functionality |
| US7835479B2 (en) * | 2006-10-16 | 2010-11-16 | Advantest Corporation | Jitter injection apparatus, jitter injection method, testing apparatus, and communication chip |
| EP2115940A2 (en) * | 2007-02-09 | 2009-11-11 | DFT Microsystems, Inc. | System and method for physical-layer testing of high-speed serial links in their mission environments |
| DE112008001125T5 (de) * | 2007-04-24 | 2010-02-18 | Advantest Corp. | Prüfgerät und Prüfverfahren |
| US20090158100A1 (en) * | 2007-12-13 | 2009-06-18 | Advantest Corporation | Jitter applying circuit and test apparatus |
| US7808252B2 (en) | 2007-12-13 | 2010-10-05 | Advantest Corporation | Measurement apparatus and measurement method |
| KR100960118B1 (ko) * | 2007-12-17 | 2010-05-27 | 한국전자통신연구원 | 클럭 지터 발생 장치 및 이를 포함하는 시험 장치 |
| US7917319B2 (en) * | 2008-02-06 | 2011-03-29 | Dft Microsystems Inc. | Systems and methods for testing and diagnosing delay faults and for parametric testing in digital circuits |
| US8207765B2 (en) | 2009-07-20 | 2012-06-26 | Advantest Corporation | Signal generation apparatus and test apparatus |
| US8683254B2 (en) | 2011-01-07 | 2014-03-25 | Anue Systems, Inc. | Systems and methods for precise event timing measurements |
| US8850259B2 (en) | 2011-01-07 | 2014-09-30 | Anue Systems, Inc. | Systems and methods for precise generation of phase variation in digital signals |
| US8788867B2 (en) | 2011-01-07 | 2014-07-22 | Anue Systems, Inc. | Systems and methods for playback of detected timing events |
| US8533518B2 (en) | 2011-01-07 | 2013-09-10 | Anue Systems, Inc. | Systems and methods for precise timing measurements using high-speed deserializers |
| TWI444636B (zh) * | 2011-02-18 | 2014-07-11 | Realtek Semiconductor Corp | 內建抖動測試功能之時脈與資料回復電路及其方法 |
| DE102020102773B4 (de) | 2019-02-04 | 2023-11-02 | Tektronix, Inc. | Jitter-einfügungssystem zur wellenformerzeugung |
| US12540972B2 (en) | 2021-09-24 | 2026-02-03 | A.T.E. Solutions, Inc. | Systems and methods for jitter injection with pre- and post-emphasis circuits in automatic testing equipment (ATE) |
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|---|---|---|---|---|
| JPH02252316A (ja) * | 1989-03-27 | 1990-10-11 | Nec Corp | ジッタシミュレーション機能付きpll回路 |
| JPH06104708A (ja) * | 1992-09-21 | 1994-04-15 | Advantest Corp | ジッタ発生装置 |
| JPH06112785A (ja) * | 1992-09-28 | 1994-04-22 | Advantest Corp | ジッタ発生装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6686879B2 (en) * | 1998-02-12 | 2004-02-03 | Genghiscomm, Llc | Method and apparatus for transmitting and receiving signals having a carrier interferometry architecture |
| JP4445114B2 (ja) * | 2000-01-31 | 2010-04-07 | 株式会社アドバンテスト | ジッタ測定装置及びその方法 |
| JP2002124873A (ja) * | 2000-10-18 | 2002-04-26 | Mitsubishi Electric Corp | 半導体装置 |
| JP3830020B2 (ja) * | 2000-10-30 | 2006-10-04 | 株式会社日立製作所 | 半導体集積回路装置 |
| US6993107B2 (en) * | 2001-01-16 | 2006-01-31 | International Business Machines Corporation | Analog unidirectional serial link architecture |
| US20030231707A1 (en) * | 2002-06-05 | 2003-12-18 | French John Sargent | Method and apparatus for jitter creation and testing |
-
2004
- 2004-07-22 JP JP2004214888A patent/JP4425735B2/ja not_active Expired - Fee Related
-
2005
- 2005-06-24 DE DE112005001762T patent/DE112005001762T5/de not_active Withdrawn
- 2005-06-24 WO PCT/JP2005/011589 patent/WO2006008908A1/ja not_active Ceased
- 2005-06-24 KR KR1020077003628A patent/KR20070043843A/ko not_active Ceased
- 2005-06-30 TW TW094122051A patent/TWI353115B/zh not_active IP Right Cessation
- 2005-07-08 US US11/178,226 patent/US7287200B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02252316A (ja) * | 1989-03-27 | 1990-10-11 | Nec Corp | ジッタシミュレーション機能付きpll回路 |
| JPH06104708A (ja) * | 1992-09-21 | 1994-04-15 | Advantest Corp | ジッタ発生装置 |
| JPH06112785A (ja) * | 1992-09-28 | 1994-04-22 | Advantest Corp | ジッタ発生装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI353115B (en) | 2011-11-21 |
| KR20070043843A (ko) | 2007-04-25 |
| US20060041797A1 (en) | 2006-02-23 |
| US7287200B2 (en) | 2007-10-23 |
| JP2006041640A (ja) | 2006-02-09 |
| TW200605512A (en) | 2006-02-01 |
| DE112005001762T5 (de) | 2007-06-21 |
| JP4425735B2 (ja) | 2010-03-03 |
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