WO2005015636A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- WO2005015636A1 WO2005015636A1 PCT/JP2004/011670 JP2004011670W WO2005015636A1 WO 2005015636 A1 WO2005015636 A1 WO 2005015636A1 JP 2004011670 W JP2004011670 W JP 2004011670W WO 2005015636 A1 WO2005015636 A1 WO 2005015636A1
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- semiconductor device
- semiconductor
- semiconductor substrate
- circuit
- field effect
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W44/00—Electrical arrangements for controlling or matching impedance
- H10W44/20—Electrical arrangements for controlling or matching impedance at high-frequency [HF] or radio frequency [RF]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/111—Indexing scheme relating to amplifiers the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/68—Shapes or dispositions thereof
- H10W70/682—Shapes or dispositions thereof comprising holes having chips therein
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/68—Shapes or dispositions thereof
- H10W70/685—Shapes or dispositions thereof comprising multiple insulating layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/541—Dispositions of bond wires
- H10W72/5449—Dispositions of bond wires not being orthogonal to a side surface of the chip, e.g. fan-out arrangements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/731—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors
- H10W90/734—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked insulating package substrate, interposer or RDL
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/754—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked insulating package substrate, interposer or RDL
Definitions
- the present invention relates to a semiconductor device technology, and more particularly to a technology effective when applied to an RF (Radio Frequency) power module.
- RF Radio Frequency
- the RF power module studied by the present inventor is a document such as a mobile phone.
- It is an electronic component for signal amplification used in communication equipment, and is assembled by mounting a plurality of semiconductor chips, chip components, etc., having signal amplification transistors on a module substrate. Each semiconductor chip and the module substrate are electrically connected through a bonding wire. The chip component is also electrically connected to the module board by connecting its terminals to the pads of the module board by soldering.
- Japanese Patent Laid-Open No. 2000-332551 discloses a configuration in which a bias circuit and a bias switch circuit of a high frequency power amplifier for a dual-pound system are formed by HBT (Heterojunction Bipolar Transistor) (see Patent Document 1). )
- HBT Heterojunction Bipolar Transistor
- JP 2001-141756 A discloses a configuration in which a plurality of GND lines are provided between output microstrip lines in a high frequency component for a dual-pound system in order to prevent interference between two outputs. (See Patent Document 2).
- a ground pad is provided between the output pads of both the semiconductor chip and the wiring board in order to prevent interference between two outputs in a dual-panned power module.
- a technique for wire bonding is disclosed (see Patent Document 3).
- Patent Document 1 Japanese Unexamined Patent Publication No. 2000-332551
- An object of the present invention is to provide a technique capable of reducing the size of a semiconductor device.
- all stages of a plurality of amplifier circuits of a high-frequency power amplifier circuit are formed of horizontal field effect transistors and provided on the same semiconductor chip having a silicon-based semiconductor substrate.
- FIG. 1 is a circuit block diagram of a semiconductor device according to an embodiment of the present invention.
- FIG. 2 is a principal circuit diagram of the semiconductor device of FIG.
- FIG. 3 is an overall plan view of a semiconductor chip showing an example of circuit arrangement of the semiconductor device of FIG.
- Fig. 4 is a graph showing the relationship between distance and leakage power.
- FIG. 5 is a plan view of the main part of the semiconductor chip of the semiconductor device of FIG.
- FIG. 6 is a cross-sectional view of the main part of the semiconductor chip of FIG.
- FIG. 7 is a circuit diagram of an equivalent circuit of the amplification stage of the semiconductor chip of FIG.
- FIG. 8 is an overall plan view of an example of an RF power module in which the semiconductor chip of FIG. 5 is mounted on a module substrate.
- FIG. 9 is a cross-sectional view of the RF power module of FIG.
- FIG. 10 is a circuit diagram of an equivalent circuit of the RF power module of FIG.
- FIG. 11 is an explanatory diagram of an example of a digital cellular phone system using the RF power module of FIG.
- Fig. 12 is a side view of the main part of an implementation example of the RF power module of the digital mobile phone system in Fig. 11.
- FIG. 13 is an overall plan view of a semiconductor chip showing an example of circuit arrangement of a semiconductor device according to another embodiment of the present invention.
- FIG. 14 is an overall plan view of an example of an RF power module in which the semiconductor chip of FIG. 13 is mounted on a module substrate.
- FIG. 15 is an overall plan view of a semiconductor chip showing an example of circuit arrangement of a semiconductor device according to still another embodiment of the present invention.
- FIG. 16 is an overall plan view of an example of an RF power module in which the semiconductor chip of FIG. 15 is mounted on a module substrate.
- FIG. 17 is an overall plan view of a semiconductor chip showing an example of circuit arrangement of a semiconductor device according to still another embodiment of the present invention.
- GSM Global System for Mobile Communication
- GSM Global System for Mobile Communication
- GSM Global System for Mobile Communication
- GSM has three radio frequency bands to use: GSM900 or simply GSM for 9 ⁇ 0MHz band, GSM180 or DCS (Digital Cellular System) 1800 or PCN for 1800MHz band, GSMl 900 or DCS for 1900MHz band 190 0 or PCS (Personal Communication Services).
- GSM1 900 is mainly used in North America. In North America, other 850MHz GSM 8 5 0 may be used.
- the GMSK modulation method is a method used for audio signal communication and shifts the phase of a carrier wave according to transmission data.
- the EDGE modulation method is a method used for data communication and is a method in which an amplitude shift is added to the phase shift of GMSK modulation.
- MOS Metal Oxide Semiconductor ⁇ Field Effect Transistor
- nMOS n-channel type MOS
- the semiconductor device of the first embodiment for example, a case where the semiconductor device of the first embodiment is applied to an RF (Radio Frequency) power module used in a digital mobile phone that transmits information using a GSM network will be described.
- RF Radio Frequency
- Figure 1 shows the IC for the amplifier circuit that constitutes the RF power module of the first embodiment.
- (Integrated circuit) chip semiconductor chip
- a circuit block diagram of 1 C is shown.
- two frequency bands GSM900 and DCS 1800, can be used (dual-pand system).
- GMSK Gausian filtered Minimum Shift Keying
- EDGE Enhanced Data GSM Environment
- This IC chip 1C is a power amplifier circuit 2A for GSM900, a power amplifier circuit 2B for DCS 1800, and a side circuit for controlling and correcting the amplification operation of these power amplifier circuits 2A and 2B. And 3.
- Each power amplifier circuit 2A, 2B has three amplifier stages 2A1-2A3, 2B1-2B3, and three matching circuits 2 AMI-2AM3, 2BM1-2BM3 ing.
- the input terminals 4a and 4b of the IC chip 1C are electrically connected to the inputs of the first amplification stages 2A1 and 2B1 via the input matching circuits 2AMI and 2BM1.
- the output of the first amplification stage 2 A 1, 2B 1 is electrically connected to the input of the second amplification stage 2 A2, 2 B 2 via the interstage matching circuit 2 AM 2, 2BM2.
- the output of the second amplification stage 2 A 2, 2 B 2 is electrically connected to the input of the final amplification stage 2 A 3, 2 B 3 via the interstage matching circuit 2 AM 3, 2 BM 3
- the outputs of the final amplification stages 2A3 and 2B3 are electrically connected to the output terminals 5a and 5b.
- all the amplification stages 2A1 to 2A3 and 2B1 to 2B3 of the power amplification circuits 2A and 2B are provided in one IC chip 1C.
- all the amplification stages 2 A 1 to 2 A 3 and 2 B 1 to 2 B 3 of the power amplification circuits 2 A and 2 B are included in one IC chip 1 C.
- the peripheral circuit 3 includes a control circuit 3A, a bias circuit 3B for applying a bias voltage to the amplification stages 2A1-2A3, 2B1-2B3, and the like.
- the control circuit 3 A is a circuit that generates a desired voltage to be applied to the power amplification circuits 2 A and 2 B, and includes a power supply control circuit 3 A 1 and a bias voltage generation circuit 3 A 2.
- the power supply control circuit 3 A 1 generates the first power supply voltage applied to the drain terminal of the output power MOS of each of the amplification stages 2 A 1 to 2 A 3 and 2 B 1 to 2 B 3 Circuit.
- the bias voltage generation circuit 3A2 is a circuit that generates a first control voltage for controlling the bias circuit 3B.
- the bias voltage generation circuit 3 A 2 when the power supply control circuit 3 A 1 generates the first power supply voltage based on the output level designation signal supplied from the baseband circuit outside the IC chip 1 C, the bias voltage generation circuit 3 A 2 generates the first control voltage based on the first power supply voltage generated by the power supply control circuit 3 A 1.
- the base panda circuit is a circuit that generates the output level designation signal.
- This output level designation signal is a signal that designates the output level of the power amplification circuits 2 A and 2 B, and is based on the distance between the mobile phone and the base station, that is, the output level according to the strength of the electric wave. Has been generated.
- the elements constituting the peripheral circuit 3 are also provided in one IC chip 1 C.
- the interface part (the interface part between the IC chip 1 C and the module board (wiring board) and the interface part necessary for each of the IC chip 1 C and the module board) can be greatly reduced. Since the area of the IC chip 1C and the module substrate can be reduced, it is possible to realize a significantly smaller RF power module.
- FIG. 2 shows an example of the circuit configuration of the power amplifier circuit 2 A and the bias circuit 3 B. Since the power amplifier circuits 2 A and 2 B and their respective bias circuits 3 B have the same circuit configuration, an example of the circuit configuration for the power amplifier circuit 2 A and the power amplifier circuit 2 A is shown here. Shown as a representative.
- the power amplifier circuit 2A of the first embodiment three nMO SQ n (Q nl, Q n 2, Q n 3) are sequentially connected in cascade as the above three amplifier stages 2 A 1 to 2 A 3 It has a circuit configuration.
- the output level of this power amplifier circuit 2A is And the first power supply voltage V dd 1 supplied from the power supply control circuit 3 A 1.
- the first power supply voltage Vd d 1 is supplied to the drain electrodes of the three nMOS Qn 1, Qn 2, and Qn 3.
- the matching circuit 2 AMI to 2 AM 3 has an inductor (passive element) and a capacitor (passive element).
- the inductor is formed of wiring, and has a function of matching the impedance of the input of the first amplification stage 2A1 (nMOSQn 1) and each stage.
- the capacitor is connected between the inductor and the input of the nMOSQn at each stage, and in addition to the impedance matching function, in addition to the DC voltage between the first power supply voltage Vd d 1 and the gate bias voltage. It has a function to shut off.
- the bias circuit 3 B has a plurality of voltage dividing circuits. Each voltage dividing circuit is composed of a pair of resistors Rl and R2. Each pair of resistors Rl and R2 is connected in series between the input terminal 4c of the bias circuit 3B and a reference potential (for example, ground potential of 0V). The wiring part connecting each pair of resistors Rl and R2 is electrically connected to the inputs (gate electrodes) of nMOSQnl to Qn3 in each stage. When the first control voltage or the output level control voltage is input to the input terminal 4c of the bias circuit 3B, the voltage is divided by the pair of resistors R1 and R2 to obtain a desired goat bias voltage. The gate bias voltage is input to the gate electrodes of the respective nMOS Qn 1 to Qn 3.
- FIG. 3 shows an example of the circuit arrangement of the IC chip 1 C for the amplifier circuit of FIG. 1
- FIG. 4 is a graph showing the relationship between distance and leakage power.
- power amplifying circuits 2 A and 2 B are arranged around one main chip 1 (: main surface (device forming surface), and each power amplifying circuit Peripheral circuit 3 is arranged between 2 A and 2 B.
- main chip 1 main surface (device forming surface)
- each power amplifying circuit Peripheral circuit 3 is arranged between 2 A and 2 B.
- the final amplification stages 2 A 3 and 2 B 3 of power amplification circuits 2 A and 2 B operate with high power.
- the heat generation is high and the signal interference to other amplification stages is large (especially the high-frequency signals handled here are 900 MHz and 1800 MHz, respectively.
- It is placed in the vicinity of the opposite sides of the IC chip 1 C so that the distance between each other is long.
- the amount of signal propagation of is roughly inversely proportional to the square of the distance.
- a and 2 B apart from each other for example, crosstalk (radiation or interference) from a power amplifier circuit that is operating to a power amplifier circuit that is not operating can be suppressed. Even if power amplifier circuits 2 A and 2B of different systems are installed on the same IC chip 1 C, such as the generation of unnecessary output from power amplifier circuits that are not connected can be suppressed, the power amplifier circuits 2 A and 2 B It is possible to improve the cross-pand isolation characteristics. Therefore, it is possible to improve the reliability and stability of the operation of the RF power module.
- P i n indicates an input bonding pad
- P o u t indicates an output bonding pad.
- Bonding pads Pi 11 of each amplification stage 2 A 1 to 2 A 3 and amplification stage 2 B 1 to 2 B 3 are arranged on the center side of the IC chip 1 C, and each amplification stage 2 A1 to 2 A3 and increased width stage 2 B
- the bonding pads P out of 1 to 2 B 3 are arranged on the side of the IC chip 1 C.
- the symbol M indicates wiring for input, output, and amplification stages.
- the wiring M between the amplification stages is connected between the bonding pads Pin and Pout in a bent state.
- the symbol Mc indicates the wiring connecting the amplification stages 2 A 1 to 2 A 3 and 2 B 1 to 2 B 3 and the peripheral circuit 3.
- FIG. 5 shows a plan view of a main part of the I C chip 1 C
- FIG. 6 shows a cross-sectional view of a main part taken along the left-right direction of the I C chip 1 C of FIG.
- FIG. 5 is a plan view
- the same hatching is given to the same layer in order to make the drawing easy to see.
- the semiconductor substrate (hereinafter simply referred to as the substrate) that constitutes the IC chip 1 C 1 S is made of, for example, P + type silicon (Si) single crystal, and its resistivity is low, for example, about 1 to 10 m ⁇ ⁇ cm. It is a resistive substrate.
- an epitaxial layer 1 EP made of, for example, p-type silicon single crystal is formed on the substrate 1 S. The resistivity of the epitaxial layer 1 EP is higher than the resistivity of the substrate 1 S.
- the main surface of this epitaxial layer 1 EP includes the nMO SQ n for the amplification stages 2 A 1 to 2 A3, 2 B 1 to 2 B 3 and the matching circuit 2 AMI to 2 AM 3, 2 BM 1 to 2 Inductor L1 for BM3, capacitor Q1 with high Q (Quality factor) value and stripline are formed.
- nMOSQn 1 and Qn 2 of two amplification stages are shown.
- all of the two stages 1 to 3 of the amplification stages 2A1 to 2A3 and 2B1 to 2B3 are formed on the same substrate 1S.
- the nMOSQ n shown here represents the unit MOS.
- nMOSQn is formed of a horizontal type MOS such as LDMOS (Laterally Diffused M0S).
- a p-type well PWL is formed in the epitaxial layer 1 EP in the formation region of nMO SQ n.
- This p-type well PWL is formed, for example, by ion-implanting impurities such as boron (B) into the epitaxial layer 1 EP.
- An nMOSQn gate insulating film 7 is formed on the p-type well PWL of the epitaxial layer 1 EP.
- An nMOSQn gate electrode (input) 8 is formed on the gate insulating film 7.
- the gate electrode 8 is composed of a laminated conductor film of, for example, polycrystalline silicon and a metal silicide layer (for example, a titanium silicide layer or a cobalt silicide layer) formed thereon.
- the nMOSQn channel is formed on the p-type well PWL below the gate electrode 8.
- n + type semiconductor region 9 is formed in the p-type well PWL region near one end of the gate electrode 8.
- This n + -type semiconductor region 9 is a region that functions as a source of nMOSQ n, and is formed, for example, by implanting impurities such as phosphorus (P) into p-type well PWL.
- an n-type semiconductor region 10 a is formed in the epitaxial layer 1 EP near the other end of the gate electrode 8.
- the n + type semiconductor region 10b is electrically connected to the n ⁇ type semiconductor region 10a at a location separated from the other end of the gate electrode 8 by the n ⁇ type semiconductor region 10a. (LDD (Lightly Doped Drain) structure).
- LDD Lightly Doped Drain
- the n-type semiconductor region 10 a and the n + -type semiconductor region 10 b function as the drain (output) of n M OSQn.
- impurities such as phosphorus (P) are transferred to the p-type well PWL. It is formed by ion injection.
- the p ++ type semiconductor region 11a is in contact with the n + type semiconductor regions 9 and 10b on the epitaxial layer 1EP in each nMOSQn formation region. It is formed to do.
- boron (B) is introduced into the P ++ type semiconductor region 11a.
- the P ++ type semiconductor region 11a is formed to surround the nMOSQn. It is shaped to reach S.
- the semiconductor region 9 of the n + -type for the source of each nMOSQn is, p ++ type semiconductor region 11 a and is electrically connected through the plug PL 1, the p ++ type It is electrically connected to the low resistance p + type substrate 1 S through the semiconductor region 11.
- the substrate 1 S is electrically connected to the wiring of the module substrate on which the IC chip 1 C is mounted via the electrode 12 formed of metal on the entire back surface of the substrate 1 S. It is electrically connected to a reference potential (for example, about 0V at ground potential GND: fixed potential) through wiring.
- the substrate 1 S is a common ground portion for a plurality of nMO S Qn formed on the IC chip 1 C.
- Figure 7 shows an equivalent circuit for this situation.
- This figure shows nMOSQn 1 and Q 2 of two amplification stages 2 A 1 and 2A2 (or amplification stages 2B 1 and 2 B 2) of the same power amplification circuit 2 A (or power amplification circuit 2 B). Illustrated.
- the symbols Gl and G2 indicate the gate electrodes 8 of MOSQnl and Qn2.
- the sources S 1 and S 2 of the nMOSQn 1 and Qn 2 (the n + type semiconductor region 9) are electrically connected to the ground potential GND via the p ++ type semiconductor region 11a and the p + type substrate 1S.
- the resistivity is as high as several tens of ohms cm. Therefore, when the configuration as in the first embodiment is adopted, the resistance component R 11, Since R21, R12, R22, and R3 are high and nMOSQn 1 source S 1 has signal gain from nMO SQ n 2 source S 2, interference between nMOSQn 1 and Qn 2 occurs. As a result of oscillation and gain reduction, I / O isolation is degraded.
- the resistance components R 12, R 22, and R 3 can be made as close to zero as possible.
- the sources S 1 and S 2 of the two nMOS Qn 1 and Q 2 are both directly connected to a stable ground.
- final stage amplification Crosstalk from nMOSQn3 in stages 2A3 and 2B3 to the first and second amplification stages 2A1, 2A2, 2B1, 2B2 and peripheral circuit 3 can be reduced.
- isolation characteristics between nMOSQn 1 to Qn3 in each amplification stage 2 A 1 to 2 A3, 2B 1 to 2B 3 can be improved, oscillation can be suppressed, and each nMOSQn 1 to The stability of the amplification characteristics of Qn 3 can be improved. This is because the same isolation characteristics can be obtained not only between the amplification stages 2A1 to 2A3 and 2B1 to 2B3, but also between other circuit elements, and crosstalk between the circuit elements is reduced. can do.
- the plug PL 1 connected to the n + -type semiconductor region 9 for the source of the preceding nMOSQn 1 is electrically connected to the first layer wiring Ml 1.
- the gate electrode 8 of the nMOSQn 1 is electrically connected to the second layer wiring M21 (M) through the plug PL 2 and the first layer wiring M 12 (M).
- the second layer wiring M21 is a wiring for nMI SQn 1 input.
- the n + type semiconductor region 11 for the drain of the nMO SQn 1 is electrically connected to the first layer wiring M 13 (M) through the plug PL 3.
- the first layer wiring Ml 3 is electrically connected to one end of the inductor L 1.
- the inductor L 1 is formed of, for example, a spiral second layer wiring M22.
- the outer periphery of the inductor L 1 is surrounded by the first layer wiring Ml 4 for shielding, the second layer wiring M 23, the plug PL 4, and the p ++ type semiconductor region 1 lb.
- Shield first layer wiring Ml 4, second layer wiring M23, plug PL4 and p ++ type semiconductor region 1 1 b are electrically connected to each other (insulated from inductor L 1) It is electrically connected to the low resistance substrate 1 S through the P ++ type semiconductor region 11 b and set to the ground potential GND.
- the magnetic field generated by the inductor L 1 can be suppressed or prevented from leaking outside.
- the coupling between the inductor L 1 and the nMO SQn outside the inductor L 1 can be suppressed or prevented, the influence of external crosstalk can be suppressed or prevented.
- the other end of the inductor L 1 is electrically connected to the upper electrode C 1 a of the capacitor C 1 through the second layer wiring M24 (M). Connected with care.
- a lower electrode C 1 b is provided in the wiring layer below the upper electrode C 1 a of the capacitor C 1 so as to face the upper electrode C 1 a with an insulating film therebetween.
- the lower electrode C 1 b is electrically connected to the P ++ type semiconductor region 11 c through the plug PL 5 and further electrically connected to the low resistance p + type substrate 1 S through the p ++ type semiconductor region 11 c. It is connected to the.
- the outer periphery of the capacitor C 1 is also surrounded by the first layer wiring Ml 5 for shielding, the second layer wiring M 25, the plug PL 6 and the p ++ type semiconductor region lid.
- the shielding first layer wiring Ml 5, second layer wiring M25, plug PL 6 and P ++ type semiconductor region 11 d are electrically connected to each other (insulated from capacitor C 1), It is electrically connected to the low resistance substrate 1 S through the P ++ type semiconductor region 11 d and set to the ground potential GND.
- the upper electrode CIa of the capacitor C1 is electrically connected to the gate electrode 8 of the nMOSQn 2 through the second layer wiring M26 (M). Plug? 1 ⁇ 1 ⁇ ?
- the first layer wirings Ml 1 to Ml 5 and the second layer wirings M21 to M26 are formed of metal using, for example, aluminum (AI) or copper (Cu) as a main wiring material.
- the P ++ type semiconductor regions 11 b to 11 d are formed at the same time when the p ++ type semiconductor region 11 a is formed.
- FIG. 8 shows an overall plan view of an example of an RF power module PM in which the IC chip 1 C is mounted on the module board MCB
- FIG. 9 is a cross-sectional view of the power module PM in FIG.
- FIG. 10 shows a circuit diagram of the power module shown in FIGS.
- the sealing member is removed so that the chip mounting surface of the module substrate MC B can be seen.
- the IC chip 1 C is placed in a recess called a cavity CBT formed on the main surface of the module substrate MCB with the back surface of the substrate 1 S facing the main surface of the module substrate MCB. It is mounted on the main surface.
- IC 1 C is located slightly closer to the input (left side in Fig. 8) than the center of the main surface of the module board MCB.
- the area on the output side of the main surface of the module board MC B is the input side area. It's getting wider.
- the output matching circuit placed on the module board MC B of the RF power module PM can be designed with low loss, so the output loss of the RF power module PA can be reduced and high output can be obtained. It is possible.
- the bonding pads Pin and Pout of the IC chip 1C are connected to the transmission line 15a (15a 1-15a 5), 15b (15 bl to 15b 5) on the main surface of the module board MCB through the bonding wire BW. , 15c is electrically connected.
- Transmission lines 15 al and 15 bl connected to the gate electrodes (inputs) of the first amplification stage 2A1 and 2B 1 through bonding wires BW are connected to input terminals 17a and 15m via capacitors Cm1 and Cm2, respectively. It is electrically connected to 17b.
- the transmission lines 15 a 2 and 15 b 2 electrically connected to the drains (outputs) of the first amplification stage 2A1 and 2B 1 through the bonding wire BW are the power supply terminals on the high potential side 1 8 a 1 In addition to being electrically connected to 18 b 1, it is also electrically connected to the ground potential GND via capacitors Cm 3 and Cm 4 disposed in the vicinity of power supply terminals 18 a 1 and 18 b 1, respectively.
- the transmission lines 15 a 3 and 15 b 3 electrically connected to the drains (outputs) of the second amplification stage 2 A 2 and 2 B 2 through bonding wires BW are the power supply terminals 18 a 2 on the high potential side, respectively.
- the transmission lines 15a4 and 15b4 which are electrically connected to the drains (outputs) of the final amplification stages 2A3 and 2B3 through bonding wires BW, are the high-potential side power supply terminals 18a3 and 18b, respectively. 3 and is electrically connected to the ground potential GND via capacitors Cm7 and Cm8 arranged in the vicinity of the power supply terminals 18a3 and 18b3, respectively.
- the transmission lines 15 a 5 and 15 b 5 electrically connected to the drains (outputs) of the final amplification stages 2A3 and 2B3 through bonding wires BW are output via capacitors Cm 9 and Cm 10, respectively. It is electrically connected to terminals 19a and 19b and is placed in the middle of each line. It is electrically connected to ground potential GND via capacitors Cm11 and Cml2.
- the transmission line 15 c electrically connected to the control bonding pad Pin of the peripheral circuit 3 through a bonding wire is electrically connected to the control terminal 20.
- the bonding wire BW is made of a fine wire such as gold (Au), for example, and has a function as an inductor.
- the transmission lines 15a and 15b also function as inductors for impedance matching.
- the capacitors Cml to Cml2 have a function as impedance matching capacitors, and are composed of chip parts.
- the electrode 12 on the back surface of the IC chip 1 C is joined to the chip mounting electrode 21 on the bottom surface of the module CBT cavity CBT.
- the electrode 21 is electrically and thermally bonded to the electrode 23 G on the back surface of the module substrate MCB through conductors in the plurality of thermal vias 22.
- a reference potential (for example, about 0 V at the ground potential GND) is supplied to the electrode 23G. That is, the reference potential supplied to the electrode 23 G on the back surface of the module substrate MCB is supplied to the low resistance substrate 1 S through the thermal via 22 and the electrode 21.
- the module board MCB has a multi-layer arrangement II structure in which a plurality of insulator plates are laminated and integrated.
- glass epoxy resin or the like may be used, for example.
- FIG. 11 shows an example of a digital cellular phone system DPS using the RF power module PM of the first embodiment.
- Reference numeral ANT in FIG. 11 is an antenna for transmitting and receiving signal waves
- reference numeral 25 is a front-end module
- reference numeral 26 is a voice signal converted into a base panda signal
- a received signal is converted into a voice signal
- a modulation method is switched.
- symbol 27 is used to down-compress and demodulate the received signal to generate a base panda signal.
- Modulation / demodulation circuits FLT1 and FLT2 that modulate the transmission signal are filters that remove noise interference from the received signal.
- Filter FLT 1 is for GSM, and filter FLT 2 is for DCS.
- the basepand circuit 26 includes a plurality of semiconductor integrated circuits such as a DSP (Digital Signal Processor), a microprocessor, and a semiconductor memory.
- the front end module 25 includes impedance matching circuits MN 1 and MN 2, low-pass filters LPF 1 and LPF 2, switch circuits 28 a and 28 b, capacitors C 5 and C 6, and a duplexer 29. Impedance matching circuits MN1 and MN2 are connected to the transmission output terminal of the RF power module PM to perform impedance matching.
- Low-pass filters LPF 1 and LP F 2 are circuits that attenuate harmonics and switch circuits 28 a 28b is a switch circuit for switching between transmission and reception, capacitors C5 and C6 are elements that cut the DC component from the received signal, and demultiplexer 29 demultiplexes the signal in the GSM900 band and the signal in the DCS 1800 band These circuits and elements are mounted on a single wiring board to form a module.
- the switching signals CNT 1 and CNT 2 of the switch circuits 28 a and 28 b are supplied from the base panda circuit 26.
- FIG. 12 shows an implementation example of the RF power module PM in the digital cellular phone system DPS shown in FIG.
- the mother board 30 is composed of, for example, a printed wiring board having a multilayer wiring structure, and an RF power module PM and a plurality of chip components 31 are mounted on the main surface thereof.
- RF power module: PM is mounted on the motherboard 30 with the electrodes 23 G, 23 S, etc. on the back of the module board MCB facing the main surface of the motherboard 30.
- the electrodes 23 G, 23 S and the like of this RF power module PM are connected to the wiring pattern of the mother board 30 through a bonding material 32 such as solder.
- the main surface of the module substrate MCB of the RF power module PM is covered with a sealing member 33 made of, for example, silicone rubber, and the IC chip 1 C on the main surface of the module substrate MCB is thereby sealed. ing.
- FIG. 13 shows an example of an overall plan view of the I C chip 1 C according to the second embodiment.
- the bonding pad Pg for grounding is arranged between the bonding pads P 0 ut.
- the bonding pad Pg for grounding is a pad for supplying a tomb potential (for example, 0 V at the ground potential GND) to the IC chip 1C.
- FIG. 14 shows an overall plan view of an example in which the RF power module PM is configured by mounting the IC chip 1 C of FIG. 13 on the module board MC B. 14 also shows the module substrate MC B with the sealing member removed so that the chip mounting surface can be seen.
- the grounding bonding pad Pg is electrically connected to the ground terminal 35 of the module board MC B via a bonding wire BW.
- a ground potential (for example, 0 V at ground potential GND) is supplied to the ground terminal 35.
- FIG. 15 shows an example of an overall plan view of the IC chip 1 C according to the third embodiment.
- the output bonding pads Pin and Pout are arranged so that they are reversed 180 degrees.
- the output bonding pad P 0 ut of the second amplification stage 2 A 2 and 2 B 2 is placed from the center of the IC chip 1 C, and the input bonding pad The node Pin is arranged near the side of the IC chip 1C.
- the wiring M between the stages connecting the bonding pad Pin for input and the bonding pad P 0 ut for output of the adjacent amplification stages 2 A 1 to 2 A3, 2B 1 to 2B 3 Is extended substantially linearly without bending.
- the wiring M between the stages can be shortened, and the wiring M between the stages and the matching circuit 2 AM between the stages 2 AM 2 and 2 as compared with the first and second embodiments.
- AM 3, 2 BM2, 2BM3 can be moved away from the output bonding pad P 0 ut of the next amplification stage, so the wiring M between the next amplification stage and the matching circuit 2 AM 2, 2 Crosstalk to AM 3, 2 BM2, 2 BM3 can be reduced. Therefore, it is possible to suppress oscillation and stabilize the amplification characteristics.
- FIG. 16 shows an overall plan view of an example in which the power module PM is configured by mounting the IC chip 1 C of FIG. 15 on the module substrate MCB. Also in FIG. 16, the sealing member is removed so that the chip mounting surface of the module substrate MC B can be seen.
- the output bonding pad Pout of the second amplification stage 2A2, 2B2 is arranged from the center of the IC chip 1C.
- the bonding pad P 0 ut for the output of the second amplification stage 2 A2, 2 B 2 and the transmission line 15 a 3, 15 b 3 for power supply of the module board MC B are connected to the bonding wire BW for power supply
- the length is longer than other bonding wires BW.
- the inductance component of the power supply line to the second amplification stage 2A2 and 2B2 can be increased by the bonding wire BW, and accordingly, the power transmission line 15a 3 on the module board MC B 15 b 3 can be made shorter than those in the first and second embodiments. Therefore, it is possible to promote downsizing of the overall dimensions of the RF power module PM. Since other than this is the same as the first embodiment, the description is omitted.
- FIG. 17 shows an example of an overall plan view of the IC chip 1 C according to the fourth embodiment.
- power amplifier circuits 2 A and 2 B of different systems in IC chip 1 C are used.
- the input / output direction is arranged in the opposite direction.
- near the end located on the diagonal of IC chip 1 C so that the final amplification stages 2 A 3 and 2 B 3 of power amplification circuits 2 A and 2 B of different systems are point-symmetric with each other Is arranged.
- the distance between the power amplification circuits 2 A and 2 B of different systems, in particular, the final amplification stages 2 A 3 and 2 B 3 can be increased.
- crosstalk radiation or interference
- generation of unnecessary output from a power amplifier circuit that is not operating can be suppressed.
- power amplifier circuits 2 A and 2 B of different systems are provided on the same IC chip 1 C, the cross-band isolation characteristics between the power amplifier circuits 2 A and 2 B can be improved.
- the description is omitted.
- GSM900, GSM1 800, and GSM 1900 may be applied to a triple panda system that can handle radio waves in three frequency bands. It can also support 800MHz and 850MHz bands.
- a PDA having a communication function It can also be applied to mobile information processing devices such as (Personal Digital Assistants) and information processing devices such as personal computers having communication functions.
- the semiconductor device of the present invention can be applied to a semiconductor device having a plurality of power amplifier circuits.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Amplifiers (AREA)
- Semiconductor Integrated Circuits (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005513029A JP4668791B2 (ja) | 2003-08-08 | 2004-08-06 | 半導体装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003290136 | 2003-08-08 | ||
| JP2003-290136 | 2003-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005015636A1 true WO2005015636A1 (ja) | 2005-02-17 |
Family
ID=34114116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/011670 Ceased WO2005015636A1 (ja) | 2003-08-08 | 2004-08-06 | 半導体装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (6) | US7116175B2 (ja) |
| JP (2) | JP4668791B2 (ja) |
| TW (1) | TW200518345A (ja) |
| WO (1) | WO2005015636A1 (ja) |
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| JP2009158508A (ja) * | 2007-12-25 | 2009-07-16 | Renesas Technology Corp | 半導体装置 |
| JP2020010242A (ja) * | 2018-07-11 | 2020-01-16 | 住友電工デバイス・イノベーション株式会社 | 半導体増幅器 |
| KR20220047540A (ko) * | 2019-05-17 | 2022-04-18 | 울프스피드, 인크. | Rf 전력 증폭기 패키징에서의 바이어스 전압 연결 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009158508A (ja) * | 2007-12-25 | 2009-07-16 | Renesas Technology Corp | 半導体装置 |
| US8669610B2 (en) | 2007-12-25 | 2014-03-11 | Renesas Electronics Corporation | Gate protection diode for high-frequency power amplifier |
| JP2020010242A (ja) * | 2018-07-11 | 2020-01-16 | 住友電工デバイス・イノベーション株式会社 | 半導体増幅器 |
| JP7136524B2 (ja) | 2018-07-11 | 2022-09-13 | 住友電工デバイス・イノベーション株式会社 | 半導体増幅器 |
| KR20220047540A (ko) * | 2019-05-17 | 2022-04-18 | 울프스피드, 인크. | Rf 전력 증폭기 패키징에서의 바이어스 전압 연결 |
| JP2022532679A (ja) * | 2019-05-17 | 2022-07-15 | ウルフスピード インコーポレイテッド | Rfパワー増幅器パッケージングにおけるバイアス電圧接続 |
| KR102736782B1 (ko) * | 2019-05-17 | 2024-12-03 | 메이콤 테크놀로지 솔루션즈 홀딩스, 인코퍼레이티드 | Rf 전력 증폭기 패키징에서의 바이어스 전압 연결 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090212873A1 (en) | 2009-08-27 |
| TW200518345A (en) | 2005-06-01 |
| JPWO2005015636A1 (ja) | 2006-10-05 |
| US20080164947A1 (en) | 2008-07-10 |
| US7952434B2 (en) | 2011-05-31 |
| US8339204B2 (en) | 2012-12-25 |
| JP4668791B2 (ja) | 2011-04-13 |
| US7348856B2 (en) | 2008-03-25 |
| US20060290431A1 (en) | 2006-12-28 |
| TWI373844B (ja) | 2012-10-01 |
| JP2010226120A (ja) | 2010-10-07 |
| US20050030107A1 (en) | 2005-02-10 |
| US20130082783A1 (en) | 2013-04-04 |
| JP5199307B2 (ja) | 2013-05-15 |
| US20110199158A1 (en) | 2011-08-18 |
| US7116175B2 (en) | 2006-10-03 |
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