WO2004112142A1 - リミッタ回路及びその半導体集積回路 - Google Patents
リミッタ回路及びその半導体集積回路 Download PDFInfo
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- WO2004112142A1 WO2004112142A1 PCT/JP2004/008219 JP2004008219W WO2004112142A1 WO 2004112142 A1 WO2004112142 A1 WO 2004112142A1 JP 2004008219 W JP2004008219 W JP 2004008219W WO 2004112142 A1 WO2004112142 A1 WO 2004112142A1
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- effect transistor
- mis field
- channel
- gate
- limiter circuit
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- 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
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
- H10D84/0167—Manufacturing their channels
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements in emitter-coupled or cascode amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
- H03G1/0029—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements using field-effect transistors [FET]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
-
- 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
- H03K5/01—Shaping pulses
- H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/024—Manufacture or treatment of FETs having insulated gates [IGFET] of fin field-effect transistors [FinFET]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/62—Fin field-effect transistors [FinFET]
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- 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
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
- H10D84/0172—Manufacturing their gate conductors
- H10D84/0179—Manufacturing their gate conductors the gate conductors having different shapes or dimensions
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- 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
- H10D84/01—Manufacture or treatment
- H10D84/02—Manufacture or treatment characterised by using material-based technologies
- H10D84/03—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology
- H10D84/038—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology using silicon technology, e.g. SiGe
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- 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
- H10D84/80—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs
- H10D84/82—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components
- H10D84/83—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components of only insulated-gate FETs [IGFET]
- H10D84/85—Complementary IGFETs, e.g. CMOS
-
- 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
- H10D84/80—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs
- H10D84/82—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components
- H10D84/83—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components of only insulated-gate FETs [IGFET]
- H10D84/85—Complementary IGFETs, e.g. CMOS
- H10D84/853—Complementary IGFETs, e.g. CMOS comprising FinFETs
Definitions
- the present invention relates to a limiter circuit formed on a semiconductor integrated circuit substrate and the semiconductor integrated circuit.
- a MOS transistor has been manufactured by forming a thermal oxide film on a silicon surface in a high temperature atmosphere of about 800 ° C. and using the thermal oxide film as a gate insulating film.
- Patent Document 1 discloses a technique for forming an insulating film in a low-temperature plasma atmosphere in order to fulfill such a demand.
- a limiter circuit is used to keep the amplitude of an FM-modulated signal constant.
- Patent Document 2 discloses that a gate having a three-dimensional structure is formed on a silicon substrate.
- Patent Document 1 JP-A-2002-261091
- Patent Document 2 JP 2002-110963 (Fig. 1)
- An object of the present invention is to increase the gain of a limiter circuit. Another object is to reduce signal distortion in a limiter circuit.
- a limiter circuit according to the present invention is a limiter circuit formed on a semiconductor integrated circuit substrate.
- the MIS field-effect transistor has a drain and a source formed on both sides of the gate insulating film.
- the inert gas is made of, for example, argon, krypton, xenon, or the like.
- the flatness of the silicon surface can be increased, and variations in characteristics (for example, threshold voltage) of the MIS field-effect transistor can be reduced.
- the DC offset and 1 / f noise generated in the limiter circuit can be reduced, so that the gain of the limiter circuit can be designed to be large. Further, it is not necessary to provide a capacitor for cutting the DC component in the limiter circuit.
- the gate in a three-dimensional structure and forming the gate insulating film in a low-temperature plasma atmosphere, the effect of the channel length modulation effect is reduced, and the signal distortion in the limiter circuit is reduced.
- the MIS field effect transistor current drive capability can be improved, and the MIS field effect transistor on the main surface of the silicon substrate can be improved.
- the element area can be reduced.
- a channel is formed on the first crystal face on the top face of the protrusion and on the second crystal face on the side wall face, and a channel width force of the MIS field-effect transistor is at least as large as that of the top face. It consists of the sum of the channel width and the channel width of the side wall surface.
- the protruding portion has a top surface made of silicon (100) surface, a side wall surface made of silicon (110), and the source and the drain are formed of the protruding portion and the silicon substrate sandwiching the gate. It is formed in the left and right regions of the protrusion.
- the limiter circuit includes a p-channel MIS field-effect transistor and an n-channel MIS field-effect transistor, and has a gate width of a top surface and a side wall surface of a protruding portion of the p-channel MIS field-effect transistor. Is set so that the current driving capabilities of the p-channel MIS field-effect transistor and the n-channel MIS field-effect transistor are substantially equal.
- the parasitic capacitance of the p-channel MIS field-effect transistor and the parasitic capacitance of the n-channel MIS field-effect transistor can be made substantially equal. Thereby, the characteristics of the amplifier circuit can be improved. Further, noise at the time of switching can be reduced.
- the limiter circuit includes first and second MIS field-effect transistors forming a differential amplifier circuit, to which a signal subjected to FM modulation is input to a gate; and the first and second MIS field-effect transistors. And a third MIS field effect transistor forming a constant current circuit commonly connected to a source or a drain of the MIS field effect transistor.
- a protrusion having a second crystal plane as a side wall is formed on a silicon substrate having a first crystal plane as a main surface, and the protrusion is formed in an inert gas plasma atmosphere.
- a gate insulating film is formed on the top surface and at least a part of the side wall surface of the protruding portion at a temperature of about 550 ° C. or lower in a plasma atmosphere, and the gate insulating film is formed.
- a circuit comprising a p-channel MIS field-effect transistor and an n-channel MIS field-effect transistor having a gate formed on a film, and a drain and a source formed on both sides of the gate insulating film of the protrusion, and A limiter circuit having a differential amplifier circuit composed of a p-channel MIS field-effect transistor or an n-channel MIS field-effect transistor is formed on the same semiconductor substrate.
- DC offset and 1 / f noise of a limiter circuit can be reduced. Therefore, the gain of the limiter circuit can be designed to be large. Further, it is not necessary to provide a capacitor for cutting the DC component in the limiter circuit.
- the gate in a three-dimensional structure and forming the gate insulating film in a low-temperature plasma atmosphere, the influence of the channel length modulation effect can be reduced, and the distortion of signals in other circuits and limiter circuits can be reduced.
- the current driving capability of the MIS field-effect transistor is improved, and the element area of the MIS field-effect transistor on the main surface of the silicon substrate is reduced. Can be smaller.
- the gate width of the top surface and the side wall surface of the p-channel MIS field-effect transistor and the n-channel MIS field-effect transistor is determined by changing the current driving capability of the p-channel MIS field-effect transistor to the n-channel MIS field effect transistor. It is set to be almost equal to the current drive capability of the effect transistor.
- the limiter circuit is configured by a CMOS circuit including the p-channel MIS field-effect transistor and the n-channel MIS field-effect transistor.
- the parasitic capacitances of the p-channel MIS field-effect transistor and the n-channel MIS field-effect transistor can be made substantially equal.
- the noise at the time of switching can be made symmetrical between the positive and negative sides to reduce the noise.
- FIG. 1 is a cross-sectional view of a plasma device using a radial line slot antenna.
- FIG. 2 is a comparison diagram of interface state density.
- FIG. 3 is a diagram showing a structure of a silicon substrate manufactured by the semiconductor manufacturing process of the embodiment.
- FIG. 4 is a diagram showing a structure of a MOS transistor manufactured by the semiconductor manufacturing process of the embodiment.
- FIG. 5 is a diagram showing a limiter circuit. BEST MODE FOR CARRYING OUT THE INVENTION
- a gate insulating film for example, an oxide film
- MIS metal insulator semiconductor
- FIG. 1 is a cross-sectional view of a plasma processing apparatus using a radial line slot antenna used in a semiconductor manufacturing process.
- the Ar gas After evacuating the inside of the vacuum chamber (processing chamber) 11, and then introducing argon (Ar) gas from the shower plate 12, the Ar gas is discharged to the outlet 11 A, and switched to krypton (Kr) gas.
- the pressure in the processing chamber 11 is set to about 133 Pa (lTorr).
- the silicon substrate 14 is placed on the sample stage 13 having a heating mechanism, and the temperature of the sample is set to 40 °.
- the silicon substrate 14 is subjected to dilute hydrofluoric acid cleaning in the immediately preceding pretreatment step, and as a result, silicon dangling bonds on the surface are terminated with hydrogen.
- a microwave having a frequency of 2.45 GHz is supplied from the coaxial waveguide 15 to the radial line slot antenna 16, and the microwave is supplied from the radial line slot antenna 16 to a dielectric provided on a part of the wall surface of the processing chamber 11. It is introduced into the processing chamber 11 through the body plate 17.
- the introduced microwave excites the Kr gas introduced into the processing chamber 11 from the shower plate 12, and as a result, a high-density Kr plasma is formed immediately below the shower plate 12. If the frequency of the supplied microphone mouthwave is in the range of about 900 MHz or more and about 10 GHz or less, the results described below will be almost the same.
- the distance between shower plate 12 and silicon substrate 14 is set to about 6 cm. The shorter the distance, the faster the film formation.
- the present invention is not limited to the plasma device using the radial line slot antenna, and the microwave may be introduced into the processing chamber using another method to excite the plasma.
- the silicon substrate 14 By exposing the silicon substrate 13 to plasma excited by Kr gas, the silicon substrate 14 The surface is exposed to low-energy Kr ions and its terminal hydrogen is removed.
- the pressure in the processing chamber is maintained at about 133 Pa (lTorr). Kr gas and ⁇ gas are mixed
- the surface of the silicon substrate 14 is oxidized by the atomic oxygen ⁇ *.
- oxidation is carried out by O molecules and H ⁇ molecules.
- the oxidation treatment with atomic oxygen performed in this embodiment can oxidize at a very low temperature of about 400 ° C.
- the processing chamber pressure should be high,
- an electrode forming step, a protective film forming step, a hydrogen sintering process, and the like are performed to manufacture a semiconductor integrated circuit including a transistor and a capacitor.
- the hydrogen content in the silicon oxide film formed by the above procedure was measured by heating and releasing, and was found to be about 10 12 / cm 2 or less in terms of surface density in a silicon oxide film having a thickness of 3 nm. Especially hydrogen content in the silicon oxide film in the oxide film the leakage current is small, and not more than about 10 u / C m 2 in areal density conversion. On the other hand, the oxide film that was not exposed to Kr plasma before the oxide film formation contained hydrogen in excess of 10 12 / cm 2 in terms of surface density.
- the terminal Kr / O gas is introduced by removing the terminal hydrogen by Kr plasma irradiation.
- the leakage current at the same voltage is reduced by two to three orders of magnitude compared to the silicon oxide film formed by conventional microwave plasma oxidation, and very good low leakage characteristics are obtained.
- Improvement of the leakage current characteristics is achieved by a thinner film with a thickness of about 1.7 nm. It was confirmed that an integrated circuit can be manufactured even with a silicon oxide film.
- FIG. 2 shows an interface between a KrZ ⁇ film formed on the (100), (110), and (111) surfaces of the silicon substrate by the above-described semiconductor manufacturing process and a conventional thermal oxide film. It is a figure showing a measurement result of a potential density.
- the interface state density of silicon is about lC ⁇ on any of the (100), (110), and (111) planes. cm ⁇ eV—less than 1 .
- the interface state density of the conventional thermal oxide film formed in an atmosphere of 800 ° C or higher is 1.1 times or more even on the (100) plane, It can be seen that a high-quality insulating film having a low interface state density can be formed.
- the first implementation The oxide film formed by the semiconductor manufacturing process of the embodiment showed good characteristics equal to or better than the conventional thermal oxide film.
- the hydrogen concentration is reduced to 10 12 / cm 2 in terms of surface density.
- a silicon nitride film or a silicon oxynitride film may be formed by using a mixed gas of an inert gas and an NH gas, or a mixed gas of an inert gas and ⁇ and NH. good.
- One important requirement of the effect obtained by forming a nitride film is that hydrogen is present in plasma even after surface-terminated hydrogen is removed. It is considered that the presence of hydrogen in the plasma terminates dangling bonds in the silicon nitride film and at the interface by forming Si_H and N_H bonds, thereby eliminating electron traps at the silicon nitride film and the interface. .
- the effect obtained by forming the oxynitride film is not only that the hydrogen content in the oxynitride film is reduced by the removal of the terminal hydrogen, but also that several percent or less of nitrogen is contained in the oxynitride film. It is also thought that it is caused by the inclusion.
- the Kr content of the oxynitride film is less than 1/10 of that of the oxide film, and contains a large amount of nitrogen instead of Kr.
- the amount of hydrogen in the oxynitride film is small, the ratio of weak bonds in the silicon nitride film is reduced, and the presence of vaginal elements causes stress in the film, Si / Si ⁇ , and at the interface. It is thought that as a result, the charge in the film and the interface state density were reduced, and the electrical characteristics of the oxynitride film were greatly improved.
- a preferable result obtained by forming an oxide film or an oxynitride film in a plasma atmosphere is that Ar or Ar in a nitride film or an oxynitride film is not caused only by removal of terminal hydrogen. It is thought to be related to the inclusion of Kr. That is, in the nitride film obtained by the above-described semiconductor manufacturing process, stress in the nitride film or at the silicon / nitride film interface is relaxed by Ar or Kr contained in the nitride film, and as a result, the stress in the silicon nitride film is fixed. It is thought that the charge and the interface state density were reduced, and the electrical characteristics, especially the 1 / f noise, and the reliability were greatly improved.
- the inert gas used in the above semiconductor manufacturing process is not limited to Ar gas and Kr gas, but xenon Xe gas can also be used. Furthermore, after forming a silicon oxide film and a silicon oxynitride film, a Kr / NH mixture having a partial pressure ratio of 98/2 was supplied from the shower plate 12 while maintaining the pressure in the vacuum vessel 1 at about 133 Pa (lTorr).
- a mixed gas may be introduced to form a silicon nitride film having a thickness of about 0.7 nm on the surface of the silicon oxide film or the silicon oxynitride film.
- a silicon oxide film having a silicon nitride film formed on the surface or a silicon oxynitride film can be obtained, so that an insulating film having a higher relative dielectric constant can be formed.
- another apparatus for plasma processing that can form a low-temperature oxide film using plasma may be used.
- a first gas release structure for releasing Ar or Kr gas for exciting plasma by microwaves and a first gas release structure for releasing ⁇ , NH, or N / H gas,
- the gate insulating film of the MIS field-effect transistor is formed on the (100) and (110) planes of the silicon substrate.
- the current driving capability is approximately 1.8 times that of the (100) plane.
- FIG. 3 shows (100) and (110) on silicon substrate 22 by the semiconductor manufacturing process of the embodiment.
- FIG. 4 shows an n-channel MOS transistor 20 manufactured by the semiconductor manufacturing process of the embodiment and a p-channel MOS transistor 20.
- FIG. 2 is a diagram showing a structure of a MOS transistor 21.
- a channel formed below the gate oxide film is indicated by oblique lines.
- a silicon substrate 22 having a (100) plane as a main surface is separated into a P-type region A and an n-type region B by an element isolation region 22c.
- a rectangular parallelepiped protrusion 23 having a height H and a width W with respect to the (100) plane is formed.
- a protrusion 24 having a length H and a width W is formed.
- a silicon oxide oxidized film is formed by the manufacturing process of the semiconductor device described above. .
- the polyelectrolyte silicon electrode electrodes 2255 and 2266 are formed on the silicon oxide oxidized film, and the gate electrode is formed.
- the silicon oxide oxidized film is also patterned, and the gate electrodes 2255 and 2266 are placed under the gate electrodes 2255 and 2266.
- gate insulating dielectric films 2277 and 2288 are selectively formed. .
- nn-type impurities are ion-injected into the region on both sides of the gate electrode 2255 of the pp-type region AA.
- the nn-type diffused diffusion regions 2299 and 3300 including the protruding portions 2233 are formed.
- the nn-type diffused diffusion regions 2299 and 3300 here constitute the source and the drain of the nn channeler MMOOSS totraranjidisutata 2200.
- pp-type impurity impurities are poured into the region on both sides of the gate electrode 2266.
- pp-type diffused and diffused regions 3311 and 3322 including the protrusions 2244.
- the pp-type diffused diffusion regions 3311 and 3322 here constitute the source and the drain of the pp-type MMOOSS totralange disistata 2211. .
- a predetermined voltage is applied to the gate electrode electrodes 2266 and 2255 of the pp channel MM ⁇ SS totralange resistor 2211 and the nn channel MMOOSS totrarange resistor 2200.
- the gate oxide film 2288 and the lower portion of the gate oxide film 2277 form the channel shown by oblique lines in FIG. 44. . .
- the gate width of the ((110000)) face of the nn channel MMOOSS totralangi-disistor 2200 is determined by the top surface of the protruding part 2233 ((the protruding part 2233).
- the gate width of the ((111100)) plane that is, the gate width of the side wall surface of the left, right, left and right sides of the projecting portion 2233, Since each is HH, the total is 22HH. .
- the gate width width here corresponds to the channel width width. . nn channel
- the gate length of the MMOOSS Totralangidisista 2200 is LLggAA. .
- the current-current driving capability of the nn channeler MMOOSS totralangidisistata 2200 is ⁇ ((WW ++ WW)) ++ ⁇
- ⁇ is the electron transfer mobility on the ((110000)) plane, // // is ((1111 nn22 AA nnll nn22
- the gate width of the ((110000)) plane of the pp channel MMOOSS totralangidististata 2211 is the top surface of the protruding portion 2244 and WW WW ZZ22, respectively, at the flat and flat portions of the left and right and right silicon substrate base plate 2222 at the lower and lower portions of the lower and upper portions of the protruding portion 2244.
- the gate width which is the width of the gate, which can be placed on the left, right, left, and right side wall surfaces of the protruding portion 2244, is HH, respectively.
- the gate width width here corresponds to the channel width width. . pp chichi
- ⁇ is the hole mobility in the (100) plane, ⁇ is (110)
- the current driving capability of the transistor 21 and the current driving capability of the n-channel MOS transistor 20 can be balanced.
- the channel width on the main surface (for example, the (100) plane) of the p-channel M ⁇ S transistor 21 needs to be significantly wider than the channel width on the (100) of the n-channel M ⁇ S transistor 20. Therefore, the difference in parasitic capacitance between the two gate insulating films can be reduced.
- the height H of the gate of the n-channel MOS transistor 20 is set to “0”,
- the gate height H of the p-channel MOS transistor 21 may be set so that the current driving capability is substantially equal to that of the MOS transistor 20.
- the gate insulating film on the main surface (for example, the (100) plane) of the silicon substrate of the P-channel or n-channel MOS transistor Since the area can be made smaller than in the case of the conventional semiconductor manufacturing process, the area occupied by the p-channel MS transistor and the n-channel MS transistor in the main surface of the silicon substrate can be reduced. Thereby, the degree of integration of the semiconductor circuit can be increased. Furthermore, since the parasitic capacitance of the p-channel or n-channel MOS transistor can be reduced, the operation speed is increased and the power consumption during switching can be reduced.
- the insulating film formed on the silicon surface is not limited to an oxide film, and may be a silicon nitride film, a silicon oxynitride film, or the like.
- FIG. 5 is a diagram illustrating an example of a limiter circuit.
- the voltage (voltage at point A in FIG. 5) obtained by dividing the power supply voltage VDC by the resistor R1, the resistor R2, the diode D1 and the resistor R3 is applied to the gate of the n-channel MOS transistor 61 via the resistor R4. I have.
- a voltage obtained by dividing the power supply voltage VDC by the resistor R1, the resistor R2, the diode D1, and the resistor R3 is also supplied to the gate of the n-channel MS transistor 62 via the resistor R5. .
- One end of a capacitor C1 is connected to the gate of the MS transistor 62, and the other end of the capacitor C1 is grounded.
- the input voltage Vin is input to the gate of the MOS transistor 61, and the input voltage Vin is input to the gate of the MOS transistor 62 via the resistors R4 and R5 connected in series.
- These MOS transistors 61 and 62 constitute a differential amplifier circuit.
- the drain and gate of the p-channel MOS transistor 64 are connected to the drain of the MOS transistor 61, and the source of the MOS transistor 64 is connected to the power supply VDC.
- the drain of the MOS transistor 62 is connected to the drain of a p-channel MOS transistor 65, and the gate of the MOS transistor 65 is connected to the gate of the MOS transistor 64.
- the source of the MOS transistor 65 is connected to the power supply voltage VDC.
- the OS transistors 64 and 65 form a constant current circuit that loads the MOS transistors 61 and 62.
- the voltage (voltage at point B in FIG. 5) obtained by dividing the power supply voltage VDC by the resistors R1 and R2 and the diode D1 and the resistor R3 is applied to the gate of the n-channel M ⁇ S transistor 63. .
- the source of the MOS transistor 63 is grounded. This MOS transistor 63 functions as a constant current source.
- the input voltage Vin is input to the gate of the M ⁇ S transistor 61, and the gates of the MOS transistor 62 are connected to the resistors R4 and R5 and the capacitor C1 with respect to the input voltage Vin. And a voltage having a phase difference determined by M ⁇ S transistor 62
- the amplitude of the input voltage Vin input to the gate of the MOS transistor 62 is equal to or more than a certain positive value
- the positive amplitude of the drain voltage is limited to a certain value and the amplitude of the input voltage Vin input to the gate is negative.
- the amplitude of the drain voltage is limited to a constant negative value.
- a voltage in which the amplitude of the input voltage Vin is limited is output from the drain of the MOS transistor 62.
- the channel length modulation of the differential amplifier circuit composed of the M ⁇ S transistors 61 and 62 is performed. Since the effect of the effect can be reduced, signal distortion in the limiter circuit can be reduced.
- the drain-side current mirror circuit (circuit consisting of M ⁇ S transistors 64 and 65) that functions as the load of the above-described differential amplifier circuit, and the channel of the source-side constant current circuit (circuit consisting of MOS transistor 64) Since the influence of the long modulation effect can be reduced, the fluctuation of the drain current with respect to the change of the drain voltage can be reduced.
- the limiter circuit is generally configured by cascade-connecting a plurality of stages of amplifier circuits.
- Each amplifier circuit includes a differential amplifier circuit, a constant current circuit functioning as a load, a constant current circuit commonly connected to the ground side of the differential amplifier circuit, and the like.
- the gate in a three-dimensional structure and forming a gate oxide film in a low-temperature plasma atmosphere, the influence of the channel length modulation effect of the amplifier circuit and the constant current circuit formed by MOS transistors can be reduced, and the limiter circuit Can be reduced.
- the current driving capability of the MOS transistor of the limiter circuit can be improved, and the element area of the transistor on the main surface of the silicon substrate can be reduced.
- the limiter circuit can be configured by a CMOS circuit including an n-channel MOS transistor and a p-channel MS transistor, for example.
- the parasitic capacitances of the p-channel MOS transistor and the n-channel MOS transistor can be set to almost the same value, so that noise due to current imbalance when the transistors are turned on and off can be reduced.
- Circuits other than the limiter circuit for example, p-channel MOS transistors and n-channel MOS transistors such as DC amplifiers, A / D conversion circuits, and digital circuits may be manufactured by the above-described semiconductor process.
- the characteristics of the p-channel M ⁇ S transistor and the n-channel MOS transistor of other circuits can be made uniform, so that the DC offset and 1 / f noise of the entire circuit can be reduced. .
- the influence of the channel length modulation effect in those circuits can be reduced, and signal distortion can be reduced.
- the channels of the p-channel MOS transistor and the n-channel MOS transistor of the limiter circuit or other circuits are formed on different crystal planes of silicon (eg, (100) plane and (110) plane).
- the channel widths may be designed so that the current drive capabilities of the ⁇ -channel MOS transistor and the n-channel M ⁇ S transistor are approximately equal.
- the parasitic capacitance and the like of the p-channel M ⁇ S transistor and the n-channel M ⁇ S transistor can be made substantially the same, so that the switching characteristics can be improved and the ON / OFF of the MOS transistor can be improved. Noise generated by a current flowing sometimes can be reduced.
- the limiter circuit is not limited to the circuit described in the embodiment, and may use another known circuit.
- the crystal plane of silicon is not limited to the combination of the (100) plane and the (110) plane, and may be combined with another crystal plane such as the (100) plane and the (111) plane.
- the DC offset and 1 / f noise generated inside the limiter circuit can be reduced, so that a capacitor or the like for cutting a DC component is not required. Further, the influence of the channel length modulation effect can be reduced, and the signal distortion in the limiter circuit can be reduced. Also, DC offset and 1 / f noise of other circuits connected to the limiter circuit can be reduced.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Formation Of Insulating Films (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04745813A EP1635392A1 (en) | 2003-06-13 | 2004-06-11 | Limiter circuit and semiconductor integrated circuit thereof |
| US10/560,646 US20060139821A1 (en) | 2003-06-13 | 2004-06-11 | Limiter circuit and semiconductor integrated circuit thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-170105 | 2003-06-13 | ||
| JP2003170105A JP2005005622A (ja) | 2003-06-13 | 2003-06-13 | リミッタ回路及びその半導体集積回路 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004112142A1 true WO2004112142A1 (ja) | 2004-12-23 |
Family
ID=33549408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/008219 Ceased WO2004112142A1 (ja) | 2003-06-13 | 2004-06-11 | リミッタ回路及びその半導体集積回路 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20060139821A1 (ja) |
| EP (1) | EP1635392A1 (ja) |
| JP (1) | JP2005005622A (ja) |
| KR (1) | KR100692945B1 (ja) |
| CN (1) | CN1806330A (ja) |
| TW (1) | TWI286414B (ja) |
| WO (1) | WO2004112142A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6996858B2 (ja) | 2017-03-29 | 2022-01-17 | 旭化成エレクトロニクス株式会社 | 半導体装置及びその製造方法 |
| KR102034371B1 (ko) * | 2018-02-12 | 2019-10-18 | 이태순 | 병원성 미생물에 대한 항균 활성을 갖는 신균주 락토바실러스 브레비스 bnt 11 및 이의 용도 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06303065A (ja) * | 1993-04-19 | 1994-10-28 | Nippon Telegr & Teleph Corp <Ntt> | リミッタ増幅器 |
| JP2002118255A (ja) * | 2000-07-31 | 2002-04-19 | Toshiba Corp | 半導体装置およびその製造方法 |
| JP2002261097A (ja) * | 2000-12-28 | 2002-09-13 | Tadahiro Omi | 誘電体膜およびその形成方法、半導体装置、不揮発性半導体メモリ装置、および半導体装置の製造方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5475342A (en) * | 1993-04-19 | 1995-12-12 | Nippon Telegraph And Telephone Corporation | Amplifier for stably maintaining a constant output |
| JP3173268B2 (ja) * | 1994-01-06 | 2001-06-04 | 富士電機株式会社 | Mis電界効果トランジスタを備えた半導体装置 |
| US5923203A (en) * | 1997-04-08 | 1999-07-13 | Exar Corporation | CMOS soft clipper |
| JP4017248B2 (ja) * | 1998-04-10 | 2007-12-05 | 株式会社日立製作所 | 半導体装置 |
| JP3802239B2 (ja) * | 1998-08-17 | 2006-07-26 | 株式会社東芝 | 半導体集積回路 |
| US20020011612A1 (en) * | 2000-07-31 | 2002-01-31 | Kabushiki Kaisha Toshiba | Semiconductor device and method for manufacturing the same |
| JP3993473B2 (ja) * | 2002-06-20 | 2007-10-17 | 株式会社ルネサステクノロジ | 半導体集積回路装置 |
| US6885055B2 (en) * | 2003-02-04 | 2005-04-26 | Lee Jong-Ho | Double-gate FinFET device and fabricating method thereof |
-
2003
- 2003-06-13 JP JP2003170105A patent/JP2005005622A/ja not_active Withdrawn
-
2004
- 2004-06-11 US US10/560,646 patent/US20060139821A1/en not_active Abandoned
- 2004-06-11 KR KR1020057023955A patent/KR100692945B1/ko not_active Expired - Fee Related
- 2004-06-11 WO PCT/JP2004/008219 patent/WO2004112142A1/ja not_active Ceased
- 2004-06-11 CN CN200480016259.XA patent/CN1806330A/zh active Pending
- 2004-06-11 TW TW093116777A patent/TWI286414B/zh not_active IP Right Cessation
- 2004-06-11 EP EP04745813A patent/EP1635392A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06303065A (ja) * | 1993-04-19 | 1994-10-28 | Nippon Telegr & Teleph Corp <Ntt> | リミッタ増幅器 |
| JP2002118255A (ja) * | 2000-07-31 | 2002-04-19 | Toshiba Corp | 半導体装置およびその製造方法 |
| JP2002261097A (ja) * | 2000-12-28 | 2002-09-13 | Tadahiro Omi | 誘電体膜およびその形成方法、半導体装置、不揮発性半導体メモリ装置、および半導体装置の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100692945B1 (ko) | 2007-03-12 |
| KR20060012029A (ko) | 2006-02-06 |
| US20060139821A1 (en) | 2006-06-29 |
| JP2005005622A (ja) | 2005-01-06 |
| TW200507448A (en) | 2005-02-16 |
| EP1635392A1 (en) | 2006-03-15 |
| TWI286414B (en) | 2007-09-01 |
| CN1806330A (zh) | 2006-07-19 |
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