WO2003010819A1 - Analog/digital mixed integrated circuit - Google Patents
Analog/digital mixed integrated circuit Download PDFInfo
- Publication number
- WO2003010819A1 WO2003010819A1 PCT/JP2002/006973 JP0206973W WO03010819A1 WO 2003010819 A1 WO2003010819 A1 WO 2003010819A1 JP 0206973 W JP0206973 W JP 0206973W WO 03010819 A1 WO03010819 A1 WO 03010819A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit
- analog
- digital
- clock
- area
- 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
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
- H03M1/0827—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of electromagnetic or electrostatic field noise, e.g. preventing crosstalk by shielding or optical isolation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
- H03M1/0818—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of clock feed-through
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
Definitions
- the present invention relates to an analog / digital hybrid integrated circuit in which an analog circuit and a digital circuit are integrated on one semiconductor chip.
- wireless communication enables "anytime, anywhere, anyone" communication.
- Means for wireless communication include mobile phone devices and PDAs, short-range wireless data communication technology bluetooth, and wireless LAN using the 5 GHz band.
- wireless communication terminals are assumed to be easily portable. Therefore, small size, light weight and low power consumption are strongly required.
- wireless communication terminals tend to be multifunctional and highly functional. Nevertheless, the equipment as a whole is required to be small, lightweight and low power consumption. Therefore, the wireless communication function built into the device needs to be smaller, lighter, thinner and lower power consumption.
- a radio circuit for transmitting and receiving analog signals
- a PLL Phase Lock Logic
- a baseband signal for digitally processing signals to be transmitted and received.
- Many attempts have been made to integrate the processing circuit (digital circuit) into one chip or one module.
- an analog circuit and a digital circuit are arranged closer to each other than when they are configured on separate chips. Therefore, large noise of digital circuits often enters high-sensitivity analog circuits. In this case, the characteristics of the analog signal are greatly deteriorated. Therefore, it is very important how to reduce the coupling noise between such an analog circuit and a digital circuit.
- a digital circuit is supplied with a clock signal as a control reference.
- the harmonic component of the clock signal jumps into the analog circuit as digital noise, and the characteristics of the analog signal transmitted and received wirelessly deteriorate significantly. Let me do it. For example, when transmitting and receiving audio signals, the receiving sensitivity is reduced, the sound quality is significantly degraded, and it becomes very difficult to hear.
- the front end of a high-frequency circuit or the like is configured by an analog circuit
- the baseband signal processing circuit is configured by a digital circuit.
- a circuit that switches by a clock signal may be included in the analog circuit area as well (in this specification, A circuit that operates based on a clock signal is called a switching circuit).
- a clock generation circuit for generating a clock signal is usually provided in a digital circuit area.
- the length of the clock line extending from the clock generation circuit provided in the digital circuit area to the switching circuit provided in the analog circuit area becomes long.
- the spacing between wiring or components is very narrow. Therefore, the influence of the clock signal flowing on the long clock line on the surroundings increases.
- the present invention has been made in view of such circumstances, and it is possible to suppress a disadvantage that an analog circuit receives digital noise due to a clock signal flowing on a clock line and the quality of the analog signal is deteriorated.
- the purpose is to Disclosure of the invention
- An analog / digital hybrid integrated circuit is an analog / digital hybrid integrated circuit in which an analog circuit and a digital circuit are mounted on the same semiconductor chip, wherein an analog circuit area and a digital circuit area are provided in the semiconductor chip.
- a clock generating circuit for generating a clock signal is arranged in the digital circuit area, and a switching circuit for performing a switching operation by the clock signal and performing analog signal processing is provided in the digital circuit area. It is characterized by being arranged in.
- the switching circuit is arranged near the clock generation circuit.
- an analog / digital hybrid integrated circuit in which an analog circuit and a digital circuit are mounted on the same semiconductor chip, wherein the semiconductor chip operates by a clock signal of a first frequency and receives an analog signal.
- a clock for generating a clock signal having a frequency including a generation circuit, having an analog circuit area and a digital circuit area in the semiconductor chip, and arranging the first switching circuit in the analog circuit area And the second switching circuit and the clock generation circuit are arranged in the digital circuit area.
- the second switching circuit near the clock generation circuit.
- the wiring length of a clock line extending from a clock generation circuit provided in a digital circuit area of a semiconductor chip to a switching circuit that operates based on a clock signal is shortened.
- the distance from the clock line to the analog circuit in the analog circuit area can be made as long as possible.
- the distance between the switching circuit itself and the analog circuit in the analog circuit area can be made as far as possible.
- FIG. 1 is a diagram illustrating an example of a circuit in which a circuit that performs a switching operation by a clock signal exists between analog circuits.
- FIG. 2 is a diagram showing an example of a chip layout of the analog / digital hybrid integrated circuit according to the first embodiment.
- FIG. 3 is a diagram illustrating an example of chip tips of an analog / digital hybrid integrated circuit according to the second embodiment.
- FIG. 2 is a diagram showing an example of chip tips of the analog / digital hybrid integrated circuit according to the first embodiment.
- the IC chip 10 of the present embodiment in which an analog circuit and a digital circuit are mixed is operated based on the first analog circuit 3 and the clock signal CK, and the output of the first analog circuit 3
- a switching circuit 4 for inputting and processing a signal, a second analog circuit 5 for inputting and processing an output signal of the switching circuit 4, and a clock generating circuit 6 for generating the clock signal CK are integrated. I have.
- This IC chip 10 includes an analog circuit area 1 for integrating analog circuits and a digital circuit area 2 for integrating digital circuits. Have. At the boundary between the analog circuit region 1 and the digital circuit region 2, a guard ring 7 is formed.
- circuits 3 to 6 shown here is only a part of the circuit integrated in the IC chip 10, and other circuits are integrated in the IC chip 10. May be. However, analog circuits are integrated in analog circuit area 1, and digital circuits are integrated in digital circuit area 2.
- the first analog circuit 3 and the second analog circuit 5 are integrated in the analog circuit area 1.
- a switching circuit 4 whether an analog circuit or a digital circuit
- a clock generation circuit 6 are integrated.
- the first analog circuit 3 and the second analog circuit 5 are arranged in the digital circuit area 2.
- the wiring length of the signal line 8 between the switching circuit 3 and the switching circuit 4 and between the switching circuit 4 and the second analog circuit 5 is the same as in the case where the switching circuit 4 is also arranged in the analog circuit area 1 as usual. It is longer than.
- the distance between the switching circuit 4 and the clock generation circuit 6 becomes short, and the wiring length of the clock line 9 for supplying the clock signal CK to the switching circuit 4 can be shortened.
- the clock line 9 which is a source of large digital noise, is routed longer into the analog circuit area 1 than the signal line 8 becomes longer.
- the clock line 9 can be prevented from entering the analog circuit area 1, and digital noise due to the clock signal CK does not jump into the analog circuit. Convenience can be suppressed. Moreover, since the guard ring 7 is provided between the analog circuit area 1 and the digital circuit area 2, it is possible to more surely prevent digital noise from being mixed.
- the high-frequency amplifier circuit can be arranged as far away from the clock line 9 as possible. As a result, it is possible to suppress the inconvenience of digital noise caused by the clock signal CK jumping into the high-frequency amplifier circuit and deteriorating the characteristics of the analog signal.
- the switching circuit 4 in the digital circuit area 2, the distance between the switching circuit 4 itself and the analog circuit in the analog circuit area 1 can be made as far as possible. Further, the switching circuit 4 and the analog circuit in the analog circuit area 1 can be separated by the guard ring 7. As a result, it is also possible to suppress a problem that switching noise generated in the switching circuit 4 jumps into the analog circuit and deteriorates the characteristics of the analog signal.
- the switching circuit 4 in the digital circuit area 2 is preferably arranged near the clock generation circuit 6 in order to make the wiring length of the clock line 9 as short as possible.
- FIG. 3 is a diagram showing an example of a chip layout of an analog / digital hybrid integrated circuit according to the second embodiment.
- the IC chip 20 of the present embodiment operates based on the first analog circuit 21 and the first clock signal CK1, and receives and processes the output signal of the first analog circuit 21.
- 1 switching circuit 2 2 and 2nd clock A second switching circuit 23 3 that operates based on the signal CK 2 and receives and processes the output signal of the first analog circuit 21 and a second switching circuit that receives and processes the output signal of the first switching circuit 22.
- a second analog circuit 24, a third analog circuit 25 for inputting and processing the output signal of the second switching circuit 23, and a clock generating circuit for generating the clock signals CK1 and CK2. 2 and 6 are integrated.
- This IC chip 20 also has an analog circuit area 1 in which analog circuits are integrated together and a digital circuit area 2 in which digital circuits are integrated together. At the boundary between the analog circuit area 1 and the digital circuit area 2, a gardening 27 is formed.
- the frequency of the second clock signal CK 2 is higher than the frequency of the first clock signal CK 1. I do. Therefore, the second clock signal CK2 has a larger energy than the first clock signal CK1.
- circuits 21 to 26 shown here is only a part of a circuit integrated in the IC chip 20, and other circuits are included in the IC chip 20. It may be accumulated in. However, analog circuits are integrated in analog circuit area 1 and digital circuits are integrated in digital circuit area 2.
- a first analog circuit 21, a first switching circuit 22, a second analog circuit 24, and a third analog circuit 25 are integrated in the analog circuit area 1.
- the first analog circuit 21 and the third analog circuit 25 which integrate the second switching circuit 23 and the clock generation circuit 26 are analog circuits.
- the second clock signal CK2 is a signal having a higher frequency and higher energy than the first clock signal CK1. Therefore, if the second clock line 29 through which the second clock signal CK2 flows is drawn long into the analog circuit area 1, large digital noise may jump into the analog circuit. More.
- the second switching circuit 23 since the second switching circuit 23 is arranged in the digital circuit area 2, the second clock line 29 does not enter the analog circuit area 1. As a result, the inconvenience of digital noise caused by the second clock signal CK2 jumping into the analog circuit can be suppressed.
- the guard 7 since the guard 7 is provided between the analog circuit area 1 and the digital circuit area 2, it is possible to more surely prevent digital noise from being mixed.
- the second switching circuit 23 in the digital circuit area 2 is preferably arranged near the clock generation circuit 26 in order to shorten the wiring length of the second clock line 29 as much as possible.
- the first switching circuit 22 which is a processing circuit between the first analog circuit 21 and the second analog circuit 24, the first and second analog circuits 21 1 and 2 2 It is located in the same analog circuit area 1 as 4.
- the first clock signal CK1 supplied to the first switching circuit 22 has a lower frequency than the second clock signal CK2, and the influence of digital noise due to the first clock signal CK1 is not so large. Not big is there.
- the wiring length of the first clock line 28 that is drawn from the clock generation circuit 6 to the first switching circuit 22 is reduced.
- a signal line 30 between the first analog circuit 21 and the first switching circuit 22 and a signal line 30 between the first switching circuit 22 and the second analog circuit 24 is provided. The wiring length can be reduced.
- the feature of the present embodiment is that, when there are a plurality of switching circuits that operate according to clock signals of different frequencies, at least the switching circuit in which the frequency of the clock signal is high and the influence of digital noise is large is used in the digital circuit area. 2 to be placed. By doing so, it is possible to suppress the inconvenience of digital noise caused by a clock signal having large energy jumping into the analog circuit and deteriorating the characteristics of the analog signal.
- the present invention it is possible to reduce the wiring length of a clock line extending from a clock generation circuit provided in a digital circuit area of a semiconductor chip to a switching circuit that operates based on a clock signal. And the distance from the clock line to the analog circuit in the analog circuit area can be kept as long as possible. This suppresses the inconvenience of digital noise caused by the clock signal flowing on the clock line jumping into the analog circuit, The coupling noise between the digital circuit and the digital circuit can be reduced.
- the present invention is useful for suppressing the inconvenience that an analog circuit receives digital noise due to a clock signal flowing on a clock line and the quality of the analog signal is degraded.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Semiconductor Integrated Circuits (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020037004043A KR100815533B1 (ko) | 2001-07-23 | 2002-07-10 | 아날로그ㆍ디지털 혼재 집적 회로 |
| US10/707,547 US6836152B2 (en) | 2001-07-23 | 2003-12-20 | Analog/digital mixed integrated circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-220879 | 2001-07-23 | ||
| JP2001220879A JP2003037172A (ja) | 2001-07-23 | 2001-07-23 | アナログ・デジタル混載集積回路 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/707,547 Continuation US6836152B2 (en) | 2001-07-23 | 2003-12-20 | Analog/digital mixed integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003010819A1 true WO2003010819A1 (en) | 2003-02-06 |
Family
ID=19054636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/006973 Ceased WO2003010819A1 (en) | 2001-07-23 | 2002-07-10 | Analog/digital mixed integrated circuit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6836152B2 (ja) |
| JP (1) | JP2003037172A (ja) |
| KR (1) | KR100815533B1 (ja) |
| CN (1) | CN100481453C (ja) |
| TW (1) | TW591359B (ja) |
| WO (1) | WO2003010819A1 (ja) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4742543B2 (ja) * | 2004-09-08 | 2011-08-10 | 凸版印刷株式会社 | Dnaチップ装置 |
| US20090028224A1 (en) * | 2005-03-10 | 2009-01-29 | Niigata Seimitsu Co., Ltd. | Semiconductor device |
| KR100853193B1 (ko) | 2007-01-08 | 2008-08-21 | 삼성전자주식회사 | 반도체 소자 및 그 형성방법 |
| US7937683B1 (en) | 2007-04-30 | 2011-05-03 | Innovations Holdings, L.L.C. | Method and apparatus for configurable systems |
| GB2452567A (en) * | 2007-09-10 | 2009-03-11 | Texas Instruments Ltd | A track and hold circuit using output transistor capacitance as the hold capacitor |
| US7940202B1 (en) | 2008-07-31 | 2011-05-10 | Cypress Semiconductor Corporation | Clocking analog components operating in a digital system |
| JP2010114483A (ja) * | 2008-11-04 | 2010-05-20 | Renesas Technology Corp | 通信装置及び通信システム |
| JP2010181313A (ja) * | 2009-02-06 | 2010-08-19 | Panasonic Corp | 角速度センサ |
| KR101390877B1 (ko) * | 2009-07-15 | 2014-04-30 | 한국과학기술원 | 가드링을 통과하는 저잡음 관통실리콘비아를 갖는 반도체칩 및 그를 이용한 적층 패키지 |
| US8698539B1 (en) * | 2013-01-11 | 2014-04-15 | Texas Instruments Incorporated | Interference mitigation in mixed signal integrated circuits (ICs) |
| JP6323643B2 (ja) | 2013-11-07 | 2018-05-16 | セイコーエプソン株式会社 | 半導体回路装置、発振器、電子機器及び移動体 |
| JP6661396B2 (ja) * | 2016-01-29 | 2020-03-11 | キヤノン株式会社 | 半導体装置および電子機器 |
| US12417401B2 (en) * | 2018-03-15 | 2025-09-16 | Arm Ltd. | Systems, devices, and/or processes for behavioral content processing |
| CN114389607B (zh) * | 2021-12-24 | 2024-06-04 | 莱弗利科技(苏州)有限公司 | 一种低噪声干扰的数模混合芯片 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05308122A (ja) * | 1992-01-22 | 1993-11-19 | Nec Corp | 半導体集積回路 |
| JP2001024156A (ja) * | 1999-07-08 | 2001-01-26 | Fuji Electric Co Ltd | 半導体集積回路 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2777291B2 (ja) | 1991-04-30 | 1998-07-16 | 株式会社東芝 | アナログ・ディジタル混在集積回路 |
| JP2629611B2 (ja) | 1994-08-31 | 1997-07-09 | 日本電気株式会社 | アナログ/ディジタル混載集積回路およびそのテスト方法 |
| US6121827A (en) | 1999-04-15 | 2000-09-19 | Lucent Technologies, Inc. | Digital noise reduction in integrated circuits and circuit assemblies |
| JP2001024165A (ja) * | 1999-07-06 | 2001-01-26 | Hitachi Ltd | 半導体装置およびその製造方法ならびに半導体製造装置 |
| US6556046B1 (en) | 2001-07-17 | 2003-04-29 | Microchip Technology Incorporated | Functional pathway configuration at a system/IC interface |
-
2001
- 2001-07-23 JP JP2001220879A patent/JP2003037172A/ja not_active Ceased
-
2002
- 2002-07-10 KR KR1020037004043A patent/KR100815533B1/ko not_active Expired - Fee Related
- 2002-07-10 CN CNB02802480XA patent/CN100481453C/zh not_active Expired - Fee Related
- 2002-07-10 WO PCT/JP2002/006973 patent/WO2003010819A1/ja not_active Ceased
- 2002-07-22 TW TW091116269A patent/TW591359B/zh not_active IP Right Cessation
-
2003
- 2003-12-20 US US10/707,547 patent/US6836152B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05308122A (ja) * | 1992-01-22 | 1993-11-19 | Nec Corp | 半導体集積回路 |
| JP2001024156A (ja) * | 1999-07-08 | 2001-01-26 | Fuji Electric Co Ltd | 半導体集積回路 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003037172A (ja) | 2003-02-07 |
| TW591359B (en) | 2004-06-11 |
| CN100481453C (zh) | 2009-04-22 |
| KR100815533B1 (ko) | 2008-03-20 |
| KR20040023787A (ko) | 2004-03-18 |
| US6836152B2 (en) | 2004-12-28 |
| CN1465103A (zh) | 2003-12-31 |
| US20040113660A1 (en) | 2004-06-17 |
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