WO2006101090A1 - 基準信号に基づいて信号を発生させる発振装置 - Google Patents
基準信号に基づいて信号を発生させる発振装置 Download PDFInfo
- Publication number
- WO2006101090A1 WO2006101090A1 PCT/JP2006/305591 JP2006305591W WO2006101090A1 WO 2006101090 A1 WO2006101090 A1 WO 2006101090A1 JP 2006305591 W JP2006305591 W JP 2006305591W WO 2006101090 A1 WO2006101090 A1 WO 2006101090A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current
- circuit
- charge pump
- signal
- capacitor
- Prior art date
Links
Classifications
-
- 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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
-
- 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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
-
- 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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
- H03L7/0895—Details of the current generators
- H03L7/0898—Details of the current generators the source or sink current values being variable
-
- 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
- Oscillator that generates a signal based on a reference signal
- the present invention relates to an oscillation device that generates a signal based on a reference signal.
- the present invention relates to an oscillation device that generates a signal using a PLL circuit.
- This application is related to the following Japanese 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 this application.
- PLL Phase Lock Loop
- the PLL circuit compares the frequencies of the reference signal and the oscillation signal with a phase comparator, and changes the frequency of the oscillation signal based on the detected phase difference.
- a phase comparator may not be able to detect a minute phase difference, and the range of such a phase difference that cannot be detected is called a dead zone.
- FIG. 11 shows a conventional charge pump type PLL circuit 60.
- the PLL circuit 60 includes a filter circuit 600, an oscillator 610, a frequency divider 615, a phase comparator 620, a reference signal generator 625, a switch circuit 630, a charging current source 640, and a charge pump current source 650.
- the finoletor circuit 600 includes a capacitor 605, and outputs a control signal based on the amount of charge accumulated in the capacitor 605.
- the oscillator 610 outputs an oscillation signal having a frequency based on the control signal.
- the frequency divider 615 divides or multiplies the oscillation signal and outputs it to the phase comparator 620.
- the phase comparator 620 detects the phase difference between the oscillation signal and the reference signal by comparing the oscillation signal with the reference signal generated from the reference signal generator 625. Based on the phase difference, the switch circuit 630 causes the capacitor 605 to be charged by the timing shift current (It) generated from the charging current source 640 or the predetermined discharge current (Ic It). Control whether to discharge. Since the existence of prior known documents has not been confirmed at this time, the description is omitted. Disclosure of the invention
- FIG. 12 shows the influence of the charging current and the charge pump current on the phase difference in the PLL circuit 60.
- the reference signal generator 625 generates a reference signal with a period T.
- the oscillator 610 outputs an oscillation signal whose phase difference from the reference signal is t.
- the phase comparator 620 outputs a pulse (signal A) corresponding to the phase difference at the rising edge of the signal, and otherwise Output signal B to.
- signal A when signal A is output, charge is accumulated in capacitor 605, and when signal B is output, charge is discharged from capacitor 605.
- phase difference t is determined based on the ratio of the current values of It and Ic.
- the magnitudes of these current values may fluctuate depending on fluctuations in the temperature inside and outside the apparatus and the power supply voltage.
- the phase difference t may also fluctuate due to the fluctuation.
- a loop band that is a frequency band of a jitter component that can be followed by the circuit is known.
- This loop band is determined by the characteristics of the PLL circuit, for example, the characteristics of the oscillator 610, the magnitude of the charge pump current, and the like. Depending on the application of the PLL circuit, you may want to make this loop bandwidth variable.
- the characteristic indicating the frequency of the oscillation signal per voltage value of the applied voltage is The frequency may vary depending on the magnitude of the frequency. In such a case, if the loop band can be changed, it is possible to prevent the PLL loop band from changing according to the output frequency.
- an object of the present invention is to provide an oscillation device that can solve the above-described problems and generates a signal based on a reference signal. This object is achieved by a combination of features described in the independent claims. Further, the dependent claims define further advantageous specific examples of the present invention.
- a filter circuit having a capacitor and outputting a control signal based on the amount of electric charge accumulated in the capacitor, and based on the control signal
- An oscillator that outputs an oscillation signal having a frequency; a phase comparator that detects a phase difference between the oscillation signal and the reference signal by comparing the oscillation signal with a reference signal having a predetermined frequency; and the phase difference Based on the power to charge the capacitor with a predetermined charging current, or a switch circuit for controlling whether to discharge the capacitor with a predetermined discharging current, and each of the charging current and the discharging current in advance
- An oscillation device including a current stabilization circuit determined based on a predetermined reference current or reference voltage is provided.
- the current stabilization circuit is connected to the capacitor and supplies a phase control current source that supplies a predetermined phase control current to the capacitor as the charging current, and a predetermined charge pump current.
- the current value of the phase control current and the charge pump current may be a current that is substantially proportional to the reference current or the reference voltage. It may be a value.
- the charge pump current source is connected to a first reference potential, and the charge pump current and a reference current that are substantially proportional to the reference current are caused to flow to the first reference potential.
- a current source is connected to a second reference potential that is higher than the first reference potential, and allows the phase control current that is substantially proportional to the reference current to flow from the second reference potential to the capacitor. Good.
- the current stabilization circuit changes the magnitude of the phase control current by setting a ratio of the reference current supplied to the phase control current source to the reference current to a specified value. You may further have a change circuit.
- the charge pump current source is connected to a first reference potential, and causes the charge pump current substantially proportional to a predetermined reference current to flow to the first reference potential.
- a source is connected to a second reference potential higher than the first reference potential, and the reference current and the phase control current that are substantially proportional to the reference current are transferred from the second reference potential to the charge pump.
- the current may flow to the current source and the capacitor.
- the charge pump current source passes the charge pump current and reference current proportional to the magnitude of the reference voltage to the first reference potential, and the phase control current source includes the first reference potential.
- the phase control current connected to a higher second reference potential and substantially proportional to the reference current may flow from the second reference potential to the capacitor.
- the current stabilization circuit is a change amount of the frequency of the oscillation signal with respect to the variation amount of the phase difference by setting a ratio of the charge pump current to the reference current to a specified value. You may also have a current adjustment circuit that sets the response characteristics.
- the current adjustment circuit when changing the ratio of the charge pump current to the reference current, maintains the ratio of the charge pump current and the phase control current as it is before the change. You can change the control current.
- the current stabilization circuit sets a response characteristic that changes the frequency of the oscillation signal in response to the variation in the phase difference by setting the current value of the reference current to a specified value. It may further have a current adjustment circuit.
- the current adjustment circuit responds to the variation in the phase difference when the time elapsed since the oscillation device started outputting the oscillation signal is shorter than when the time is longer.
- the response speed for changing the frequency may be set faster.
- the charge pump current source sets a ratio of the charge pump current with respect to the reference voltage to a specified value, so that a response characteristic which is a change amount of the frequency of the oscillation signal with respect to the variation amount of the phase difference is set. May be further set.
- the current stabilization circuit is connected to the capacitor, and a phase control current source that discharges the capacitor by the predetermined phase control current as a discharge current, and the capacitor by the switch circuit.
- a current value of the phase control current and the charge pump current which may include a charge pump current source that charges the capacitor by flowing a predetermined charge pump current when connected, the reference current or The current value may be substantially proportional to the reference voltage.
- an integration circuit that outputs a control signal based on an integral value of two input voltage values, an oscillator that outputs an oscillation signal having a frequency based on the control signal, and A phase comparator that outputs a phase difference signal having a pulse width corresponding to a phase difference between the oscillation signal and the reference signal by comparing the oscillation signal with a reference signal having a predetermined frequency; and the oscillation signal And a control circuit that controls the two input voltage values based on the phase difference signal so that a phase difference between the reference signal and the reference signal approaches a predetermined reference phase difference, and the two input voltage values Are provided with a voltage stabilization circuit that is determined based on a predetermined reference voltage.
- the phase difference of the oscillation signal with respect to the reference signal can be stabilized and the phase difference and the loop band can be changed in the PLL circuit.
- FIG. 1 shows a configuration of an oscillation device 10 according to the first embodiment of the present invention.
- the oscillation device 10 includes a filter circuit 100, an oscillator 110, a frequency divider 115, a phase comparator 120, a reference signal generator 125, a switch circuit 130, a current stabilization circuit 140, and a reference current source 155. Equipped.
- the filter circuit 100 includes a capacitor 105 and a filter 108, and outputs a control signal based on the charge amount accumulated in the capacitor 105 to the oscillator 110 via the filter 108.
- the oscillator 110 outputs an oscillation signal having a frequency based on the control signal to the outside. Specifically, the frequency of the oscillation signal is determined based on the voltage value of the control signal output from the filter circuit 100.
- the frequency divider 115 divides or multiplies the frequency of the oscillation signal output from the oscillator 110 by a predetermined ratio, and outputs the result to the phase comparator 120.
- the reference signal generator 125 outputs a reference signal having a predetermined frequency to the phase comparator 120.
- the phase comparator 120 detects the phase difference between the oscillation signal and the reference signal by comparing the oscillation signal input from the oscillator 110 via the frequency divider 115 with the reference signal input from the phase comparator 120.
- the switch circuit 130 is configured to charge the capacitor 105 with a predetermined charging current (It) or with a predetermined discharging current (Ic_It). Control whether to discharge.
- the current stabilization circuit 140 determines each of the charging current and the charge pump current based on a predetermined reference current (Iref). Thus, the charging current and the charge pump current are both determined based on the current value of the reference current source 155. This prevents the charge current (It) and discharge current (Ic It) from being affected differently even when the temperature and power supply voltage fluctuate, stabilizes the phase difference of the oscillation signal, and reduces jitter. Can be reduced.
- FIG. 2 shows a detailed configuration of the current stabilization circuit 140 in FIG. 1 (first example).
- the current stabilization circuit 140 includes a charge pump current source 150, a phase control current source 160, and a current adjustment. Circuit 170.
- the charge pump current source 150 supplies a predetermined charge pump current (Ic) having a magnitude that is a sum of the charge current (It) and the discharge current (Ic — It).
- Ic charge pump current
- Ic_It discharge current
- the charge pump current source 150 has a current mirror circuit 158 connected to the first reference potential (V—), and is substantially proportional to the reference current (Iref) by the current mirror circuit 158.
- the charge pump current (Ic) and phase control current (la) are applied to the first reference potential (V-).
- the phase control current source 160 is connected to the capacitor 105, and causes a phase control current (It) to flow through the capacitor 105.
- the capacitor 105 is charged by the phase control current (It) when the connection between the capacitor 105 and the current stabilization circuit 140 is cut off by the switch circuit 130.
- the phase control current source 160 has a current mirror circuit 165 connected to a second reference potential (V +) higher than the first reference potential (V—), and the current mirror circuit 165 includes Then, a phase control current (It) that is substantially proportional to the reference current (KX la) is passed from the second reference potential (V +) to the capacitor 105.
- phase control current changing circuit 172 described later is realized by a current discharge type DA converter, the current mirror circuit 165 is not necessary. That is, the phase control current source 160 may supply the output current to the phase control current changing circuit 172 directly to the capacitor 105.
- the current adjustment circuit 170 includes a phase control current change circuit 172 and a charge pump current change circuit 175.
- the phase control current changing circuit 172 is realized by, for example, a DA converter or the like, and sets the ratio of the reference current supplied to the phase control current source 160 with respect to the reference current (Iref) to a designated value, thereby controlling the phase. Change the magnitude of the current. Let K X la be the magnitude of the reference current obtained as a result of the change.
- the charge pump current changing circuit 175 is realized by a DA converter, for example, and sets the ratio of the charge pump current (Ic) to the reference current (Iref) to a specified value.
- the charge pump current changing circuit 175 includes a current mirror circuit 190 and a power
- the rent mirror circuit 195 is sequentially connected to the switch circuit 130.
- the current mirror circuit 190 is connected to the positive voltage (Vcc) of the circuit power supply, and causes the current mirror circuit 195 to pass a current substantially proportional to the current drawn by the charge pump current changing circuit 175.
- the current mirror circuit 195 is connected to the negative voltage (Vee) of the circuit power supply, and causes a charge pump current (Ic) that is substantially proportional to the current passed by the current mirror circuit 190 to flow from the switch circuit 130.
- a current having a desired magnitude can flow as the charge pump current regardless of the characteristics of the DA converter that implements the charge pump current changing circuit 175.
- the charge pump current changing circuit 175 may be directly connected to the switch circuit 130.
- the current adjustment circuit 170 is configured to provide a ratio between the charge pump current (Ic) and the phase control current (It).
- the phase control current (It) is also changed so as to keep the ratio before the change.
- the current adjustment circuit 170 is configured such that when the time elapsed since the oscillation device 10 started outputting the oscillation signal is shorter, the current adjustment circuit 170 is compared with the case where the time is longer. Set a faster response speed to change the frequency in response to phase difference fluctuations.
- the phase difference between the oscillation signal and the reference signal is large, such as when the power is turned on, the frequency quickly follows the reference signal, and when the frequency stabilizes thereafter, the frequency of the reference signal is very small. Under the influence of various fluctuations.
- FIG. 3 shows a modification of the charge pump current source 150 in FIG.
- the charge pump current source 150 includes a reference voltage source 300, a charge pump current generation circuit 310, and a phase control current generation circuit 320.
- the reference voltage source 300 is connected to the first reference potential (V_), and determines a potential having a potential difference from the first reference potential as a predetermined reference voltage value (Vref).
- the charge pump current generation circuit 310 supplies a current (I) proportional to the reference voltage value (Vref) to the first reference potential.
- the current (I) is a value obtained by dividing the reference voltage value (Vref) by the reference resistance value (R1).
- phase control current generating circuit 320 flows a phase control current (I) proportional to the magnitude of the reference voltage value (Vref) to the first reference potential.
- the phase control current (I) is the value obtained by dividing the reference voltage value (Vref) by the reference resistance value (R2).
- the common reference for determining the charging current and the discharging current may be not only the reference current but also the reference voltage. Even with such a configuration, it is possible to equalize the effects of temperature fluctuations, etc., on the charging current and discharging current, so that the phase difference of the oscillation signal with respect to the reference signal can be kept constant.
- FIG. 4 shows a detailed configuration of the current stabilization circuit 140 in FIG. 1 (second example). Similar to FIG. 2, the current stabilization circuit 140 includes a charge pump current source 150, a phase control current source 160, and a current adjustment circuit 170. However, in the example of this figure, unlike FIG. 2, the charge pump current source 150 is connected to the first reference potential (V_). Then, the charge pump current source 150 causes a charge pump current substantially proportional to a predetermined reference current to flow from the switch circuit 130 to the first reference potential. For example, a current mirror circuit 158 can be used to pass a substantially proportional current.
- phase control current source 160 is connected to a second reference potential higher than the first reference potential (V ⁇ ). Then, the phase control current source 160 passes a reference current and a phase control current that are substantially proportional to the reference current from the second reference potential (V +) to the charge pump current source 150 and the capacitor 105.
- a current mirror circuit 165 may be used in order to pass a substantially proportional current.
- the current adjustment circuit 170 includes a phase control current change circuit 172 and a charge pump current change circuit 175, as in FIG.
- the phase control current changing circuit 172 is realized by, for example, a DA converter, and sets the ratio of the phase control current to the reference current (Iref) to a specified value.
- the charge pump current changing circuit 175 is realized by a DA converter, for example, and sets the ratio of the charge pump current (Ic) to the reference current (Iref) to a specified value. By setting this ratio, it is possible to set a response characteristic that is a change amount of the frequency of the oscillation signal with respect to a variation amount of the phase difference between the reference signal and the oscillation signal. Furthermore, by changing this response characteristic, the loop bandwidth of the PLL circuit can be determined arbitrarily.
- FIG. 5 shows a detailed configuration of the current stabilization circuit 140 in FIG. 1 (third example).
- the charge pump current source 150 includes a phase control current change circuit 172 and a charge pump current change circuit 175.
- the phase control current changing circuit 172 and the charge pump current changing circuit 175 input a predetermined reference voltage together.
- the phase control current changing circuit 17 2 sets the ratio of the phase control current to the reference voltage to a designated value, and outputs it to the phase control current source 160.
- the charge pump current changing circuit 175 changes the response characteristic of the oscillation signal by setting the ratio of the charge pump current to the reference voltage to a specified value.
- Other configurations are substantially the same as those of the current stabilization circuit 140 shown in FIG.
- the current values of the charge pump current and the charge current can be determined based on the common reference voltage.
- the phase difference with respect to the signal can be kept constant.
- FIG. 6 shows a detailed configuration of the current stabilization circuit 140 in FIG. 1 (fourth example).
- the current stabilization circuit 140 includes a charge pump current source 150, a phase control current source 160, and a current adjustment circuit 170.
- the current adjustment circuit 170 has a reference current change circuit 180 instead of the charge pump current change circuit 175.
- the reference current changing circuit 180 is realized by a DA converter, for example, and sets the current value of the reference current to a designated value.
- the charge pump current source 150 passes a charge pump current that is substantially proportional to the reference current and a phase control current that is substantially proportional to the reference current.
- the response characteristic that is the amount of change in the frequency of the oscillation signal with respect to the amount of change in phase difference while maintaining the ratio of the charge pump current and charge current constant. Can only be changed.
- the phase difference of the oscillation signal with respect to the reference signal can be arbitrarily set.
- FIG. 7 shows a configuration of the oscillation device 10 according to the second embodiment of the present invention.
- the oscillation device 10 includes a filter circuit 100, an oscillator 110, a frequency divider 115, a phase comparator 12 and the like. 0, a reference signal generator 125, a switch circuit 130, a current stabilization circuit 140, and a reference current source 155. The differences from Fig. 1 are explained below.
- the switch circuit 130 charges the capacitor 105 with a predetermined discharging current (It) or with a predetermined charging current (Ic_It).
- the current stabilization circuit 140 determines both the charge pump current (Ic) and the phase control current (It) based on the reference current (Iref). As a result, each of the charging current and the discharging current is determined based on the reference current (Iref). As a result, even when the temperature or the power supply voltage fluctuates, the charging current and the discharging current can be prevented from being affected by each other, the phase difference of the oscillation signal can be stabilized, and the jitter can be reduced.
- FIG. 8 shows a detailed configuration of the current stabilization circuit 140 in FIG. Current stabilization circuit
- the 140 includes a charge pump current source 150, a phase control current source 160, and a current adjustment circuit 170, as in FIG. The differences from Fig. 2 are explained below.
- the charge pump current source 150 flows a predetermined charge pump (Ic) and charges the capacitor 105 when connected to the capacitor 105 by the switch circuit 130.
- the charge pump current source 150 has a current mirror circuit 158 connected to the second reference potential (V +), and the charge mirror current 158 is substantially proportional to the reference current by the current mirror circuit 158. Flow (Ic) through switch circuit 130.
- Phase control current source 160 is connected to capacitor 105 and uses a predetermined phase control current as a discharge current, and discharges capacitor 105 by the discharge current.
- the phase control current source 160 includes a current mirror circuit 165 connected to a first reference potential (V ⁇ ) lower than the second reference potential (V +), and the current mirror circuit 165 includes: A reference current (la) and a phase control current (It) that are substantially proportional to the reference current (Iref) are supplied.
- the current adjustment circuit 170 includes a phase control current change circuit 172 and a charge pump current change circuit 175.
- the phase control current changing circuit 172 is realized by a DA converter, for example, and changes the magnitude of the phase control current by setting the ratio of the phase control current to the reference current (Iref) to a specified value.
- the charge pump current changing circuit 175 is realized by a DA converter, for example, and sets the ratio of the charge pump current (Ic) to the reference current (la) to a specified value. By setting this ratio, the reference signal and oscillation It is possible to set a response characteristic that is the amount of change in the frequency of the oscillation signal with respect to the amount of change in the phase difference from the signal.
- FIG. 9 shows a configuration of the oscillation device 10 according to the third embodiment of the present invention.
- FIG. 10 shows the waveform of each control signal in the oscillation device 10 shown in FIG.
- the oscillation device 10 includes an integration circuit 900, an oscillator 910, a frequency divider 915, a phase comparator 920, a reference signal generator 925, a control circuit 930, and a voltage stabilization circuit 940.
- the oscillator 910, the frequency divider 915, and the reference signal generator 925 are substantially the same as the oscillator 110, the frequency divider 115, and the reference signal generator 125 described in FIG.
- the integrating circuit 900 outputs a control signal based on an integrated value of two input voltage values.
- the integration circuit 900 is realized by a circuit that feeds back the output of the comparator to the input side.
- Phase comparator 920 compares the oscillation signal with a reference signal having a predetermined frequency. Then, the phase comparator 920 outputs a phase difference signal having a pulse width corresponding to the phase difference between the oscillation signal and the reference signal. For example, when the phase of the oscillation signal is delayed with respect to the reference signal, the phase comparator 920 outputs a signal having a pulse width corresponding to the delay to the terminal U when the reference signal rises (V in FIG. 10). See). In this case, the phase comparator 9
- the control circuit 930 controls the two input voltage values based on the phase difference signal so that the phase difference between the oscillation signal and the reference signal approaches a predetermined reference phase difference. Specifically, the control circuit 930 generates a voltage (V) and a voltage (V) based on the voltage values of the terminals U and D of the phase comparator 920, respectively. Furthermore, the control circuit 930
- control circuit 930 uses the phase control voltage (Vc) and the voltage (V) as one input voltage value to the integration circuit 900, and the voltage (V)
- the control circuit 930 controls the voltage value input to the integration circuit 900 to be equal by delaying the oscillation signal by a quarter period with respect to the reference signal.
- the reference phase difference of the oscillation signal with respect to the reference signal can be determined by appropriately determining the magnitude of the phase control voltage. Then, the phase comparator 920 and the control circuit 930 can control the phase difference of the oscillation signal with respect to the reference signal so as to approach this reference phase difference.
- the loop band is determined based on each element of the sensitivity of the oscillator 910, the gain of the loop filter, and the amplitude of the input voltage value to the integration circuit 900.
- the reference voltage (Vref) shown in Fig. 9 can be changed.
- a loop band can be arbitrarily determined as in the other embodiments described above.
- phase comparator 920 and the control circuit 930 can determine the phase difference of the oscillation signal with respect to the reference signal as a predetermined phase difference.
- FIG. 4 shows a detailed configuration of the current stabilization circuit 140 in FIG. 1 (second example).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800078207A CN101138157B (zh) | 2005-03-23 | 2006-03-20 | 基于基准信号发生信号的振荡装置 |
DE112006000643T DE112006000643T5 (de) | 2005-03-23 | 2006-03-20 | Oszillationsvorrichtung zum Erzeugen eines Signals auf der Grundlage eines Bezugssignals |
US11/776,550 US7605621B2 (en) | 2005-03-23 | 2007-07-11 | Oscillating apparatus |
US12/257,401 US7612590B2 (en) | 2005-03-23 | 2008-10-24 | Oscillating apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-084575 | 2005-03-23 | ||
JP2005084575A JP4575816B2 (ja) | 2005-03-23 | 2005-03-23 | 基準信号に基づいて信号を発生させる発振装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/776,550 Continuation US7605621B2 (en) | 2005-03-23 | 2007-07-11 | Oscillating apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006101090A1 true WO2006101090A1 (ja) | 2006-09-28 |
Family
ID=37023750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/305591 WO2006101090A1 (ja) | 2005-03-23 | 2006-03-20 | 基準信号に基づいて信号を発生させる発振装置 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7605621B2 (ja) |
JP (1) | JP4575816B2 (ja) |
KR (1) | KR20070112452A (ja) |
CN (1) | CN101138157B (ja) |
DE (1) | DE112006000643T5 (ja) |
TW (1) | TW200635231A (ja) |
WO (1) | WO2006101090A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113839666A (zh) * | 2020-06-24 | 2021-12-24 | 意法半导体(鲁塞)公司 | 用于管理锁相环的启动的处理和对应的集成电路 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100066166A (ko) * | 2008-12-09 | 2010-06-17 | 삼성전자주식회사 | 노이즈를 줄일 수 있는 바이어스 발생기를 구비하는 위상 동기 루프 및 위상 동기 루프의 바이어스 발생기 |
JP5368626B2 (ja) * | 2010-02-19 | 2013-12-18 | ルネサスエレクトロニクス株式会社 | 半導体集積回路装置 |
CN104124953A (zh) * | 2013-04-25 | 2014-10-29 | 原相科技股份有限公司 | 高精度的电容式开关 |
WO2016198116A1 (en) | 2015-06-11 | 2016-12-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Phase locked loop arrangement, transmitter and receiver and method for adjusting the phase between oscillator signals |
JP7350512B2 (ja) * | 2019-05-17 | 2023-09-26 | ローム株式会社 | 発振回路、半導体装置、オシレータic、発振回路の校正方法 |
CN116584714B (zh) * | 2023-07-18 | 2023-10-20 | 杭州拓尔微电子有限公司 | 启动控制装置、电子雾化器及其模组 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0241026A (ja) * | 1988-08-01 | 1990-02-09 | Ricoh Co Ltd | Pll回路 |
JPH0481018A (ja) * | 1990-07-20 | 1992-03-13 | Sony Corp | ディジタル型位相比較器 |
JPH04262618A (ja) * | 1991-02-18 | 1992-09-18 | Advantest Corp | 位相検波器 |
JPH10190455A (ja) * | 1996-12-26 | 1998-07-21 | Texas Instr Japan Ltd | チャージポンプ回路 |
JP2005252438A (ja) * | 2004-03-02 | 2005-09-15 | Yokogawa Electric Corp | チャージポンプ回路およびこれを用いたpll回路 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR940011436B1 (ko) * | 1989-04-19 | 1994-12-15 | 가부시끼가이샤 히다찌세이사꾸쇼 | 자기디스크 기억장치 |
US5835544A (en) * | 1993-12-24 | 1998-11-10 | Sony Corporation | Clock signal reproduction circuit and data reproduction circuit |
US5546053A (en) * | 1994-07-27 | 1996-08-13 | Texas Instruments Incorporated | Phase locked loop having booster circuit for rapid lockup |
JP3388071B2 (ja) * | 1995-09-20 | 2003-03-17 | 富士通株式会社 | 位相同期回路、および位相同期回路を含む半導体装置 |
JP3442931B2 (ja) * | 1996-06-04 | 2003-09-02 | パイオニア株式会社 | Pll回路 |
JP3717289B2 (ja) * | 1997-10-20 | 2005-11-16 | 富士通株式会社 | 集積回路装置 |
US6771133B2 (en) * | 1997-10-21 | 2004-08-03 | Emhiser Research Limited | Phase-locked oscillator with improved digital integrator |
JP4244397B2 (ja) * | 1998-05-21 | 2009-03-25 | ソニー株式会社 | Pll回路 |
JP3227699B2 (ja) * | 1998-07-29 | 2001-11-12 | 日本電気株式会社 | チャージポンプ回路及びそれを備えたpll回路 |
KR100555471B1 (ko) * | 1998-07-29 | 2006-03-03 | 삼성전자주식회사 | 적응적으로 전류 옵셋을 제어하는 전하 펌프 |
US6163184A (en) * | 1998-12-09 | 2000-12-19 | Lucent Technologies, Inc. | Phase locked loop (PLL) circuit |
US6580376B2 (en) * | 2000-07-10 | 2003-06-17 | Silicon Laboratories, Inc. | Apparatus and method for decimating a digital input signal |
JP4407031B2 (ja) * | 2000-09-21 | 2010-02-03 | ソニー株式会社 | 位相同期ループ回路および遅延同期ループ回路 |
JP3758186B2 (ja) * | 2002-05-23 | 2006-03-22 | 横河電機株式会社 | Pll回路 |
US20040066220A1 (en) * | 2002-10-03 | 2004-04-08 | Chun-Chieh Chen | High-speed high-current programmable charge-pump circuit |
US6859108B2 (en) * | 2003-02-28 | 2005-02-22 | Ati Technologies, Inc. | Current biased phase locked loop |
US7459964B2 (en) * | 2004-03-26 | 2008-12-02 | Panasonic Corporation | Switched capacitor filter and feedback system |
-
2005
- 2005-03-23 JP JP2005084575A patent/JP4575816B2/ja not_active Expired - Fee Related
-
2006
- 2006-03-20 CN CN2006800078207A patent/CN101138157B/zh not_active Expired - Fee Related
- 2006-03-20 KR KR1020077017836A patent/KR20070112452A/ko not_active Application Discontinuation
- 2006-03-20 WO PCT/JP2006/305591 patent/WO2006101090A1/ja active Application Filing
- 2006-03-20 DE DE112006000643T patent/DE112006000643T5/de not_active Withdrawn
- 2006-03-22 TW TW095109798A patent/TW200635231A/zh not_active IP Right Cessation
-
2007
- 2007-07-11 US US11/776,550 patent/US7605621B2/en not_active Expired - Fee Related
-
2008
- 2008-10-24 US US12/257,401 patent/US7612590B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0241026A (ja) * | 1988-08-01 | 1990-02-09 | Ricoh Co Ltd | Pll回路 |
JPH0481018A (ja) * | 1990-07-20 | 1992-03-13 | Sony Corp | ディジタル型位相比較器 |
JPH04262618A (ja) * | 1991-02-18 | 1992-09-18 | Advantest Corp | 位相検波器 |
JPH10190455A (ja) * | 1996-12-26 | 1998-07-21 | Texas Instr Japan Ltd | チャージポンプ回路 |
JP2005252438A (ja) * | 2004-03-02 | 2005-09-15 | Yokogawa Electric Corp | チャージポンプ回路およびこれを用いたpll回路 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113839666A (zh) * | 2020-06-24 | 2021-12-24 | 意法半导体(鲁塞)公司 | 用于管理锁相环的启动的处理和对应的集成电路 |
Also Published As
Publication number | Publication date |
---|---|
CN101138157B (zh) | 2011-02-23 |
US20090079480A1 (en) | 2009-03-26 |
CN101138157A (zh) | 2008-03-05 |
TWI378647B (ja) | 2012-12-01 |
JP2006270424A (ja) | 2006-10-05 |
US7605621B2 (en) | 2009-10-20 |
TW200635231A (en) | 2006-10-01 |
DE112006000643T5 (de) | 2008-02-07 |
JP4575816B2 (ja) | 2010-11-04 |
US20080157835A1 (en) | 2008-07-03 |
KR20070112452A (ko) | 2007-11-26 |
US7612590B2 (en) | 2009-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7746130B2 (en) | Triangular wave generating circuit having synchronization with external clock | |
WO2006101090A1 (ja) | 基準信号に基づいて信号を発生させる発振装置 | |
US8212624B2 (en) | Reference frequency generation circuit, semiconductor integrated circuit, and electronic device | |
US8810284B2 (en) | Voltage and temperature compensated frequency converter | |
US11128256B2 (en) | Oscillator circuit | |
US9059688B2 (en) | High-precision oscillator systems with feed forward compensation for CCFL driver systems and methods thereof | |
US7496136B2 (en) | Phase locked loop and method for evaluating a jitter of a phase locked loop | |
US6466069B1 (en) | Fast settling charge pump | |
US6614318B1 (en) | Voltage controlled oscillator with jitter correction | |
US7649408B2 (en) | Loop filters | |
US7199627B2 (en) | DC-DC converter connected to phase locked loop | |
KR101623125B1 (ko) | 위상 동기 루프 회로 및 이를 포함한 시스템 | |
KR100552056B1 (ko) | 반도체 장치의 위상 동기 루프 회로 | |
JP4082207B2 (ja) | 周波数シンセサイザ | |
KR100343470B1 (ko) | 이득 제어용 필터의 튜닝회로 | |
JP4727538B2 (ja) | 位相同期回路 | |
CN111682863B (zh) | 一种输出幅度稳定的三角波产生电路 | |
WO2023247081A1 (en) | Phase-locked loop | |
KR0138318B1 (ko) | 듀티 사이클 조정장치 | |
CN116488615A (zh) | 三角波产生电路及方法、芯片、电子设备 | |
JPH07202689A (ja) | Pll回路 | |
JPH09130239A (ja) | フェーズロックドループ回路装置 | |
JP2004153922A (ja) | スイッチングレギュレータ | |
WO1998054832A1 (en) | Apparatus for converting frequency of an electric signal to voltage | |
JPH05284015A (ja) | 位相同期ループ回路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680007820.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1020077017836 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120060006436 Country of ref document: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
RET | De translation (de og part 6b) |
Ref document number: 112006000643 Country of ref document: DE Date of ref document: 20080207 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06729559 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: JP |