CN102331980A - USB device isolator - Google Patents

USB device isolator Download PDF

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Publication number
CN102331980A
CN102331980A CN2010102270295A CN201010227029A CN102331980A CN 102331980 A CN102331980 A CN 102331980A CN 2010102270295 A CN2010102270295 A CN 2010102270295A CN 201010227029 A CN201010227029 A CN 201010227029A CN 102331980 A CN102331980 A CN 102331980A
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CN
China
Prior art keywords
port
isolator
capacitor
usb interface
usb
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CN2010102270295A
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Chinese (zh)
Inventor
谢剑
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上海仁爱生物科技有限公司
上海联易医疗器械技术有限公司
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Priority to CN2010102270295A priority Critical patent/CN102331980A/en
Publication of CN102331980A publication Critical patent/CN102331980A/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/10Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply
    • Y02D10/14Interconnection, or transfer of information or other signals between, memories, peripherals or central processing units
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/10Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply
    • Y02D10/15Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply acting upon peripherals
    • Y02D10/151Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply acting upon peripherals the peripheral being a bus

Abstract

The invention discloses a USB (universal serial bus) device isolator. The isolator comprises an A type USB interface, a B type USB interface and an isolating unit; the isolating unit comprises a signal isolating unit and a power isolating unit, and an input interface of the signal isolating unit is electrically connected with a signal transmission port of the A type USB interface, and an output interface of the signal isolating unit is electrically connected with a signal transmission port of the B type USB interface, a power source signal of the A type USB interface is electrically connected with a power source signal of the B type USB interface through the power isolating unit. The power consumption of the USB device isolator provided by the invention is only 1/6-1/10 of that of the existing photon coupled isolator, the transmission speed is greatly improved; meanwhile, the withstand voltage capability of the USB isolating device is improved.

Description

一种USB设备隔离器 One kind of USB device isolator

技术领域 FIELD

[0001] 本发明涉及信号隔离器技术领域,尤其是一种USB设备隔离器。 [0001] Technical Field The present invention relates to a signal separator, in particular a USB device isolator. 背景技术 Background technique

[0002] USB接口由于其可以热插拔、标准统一、可以连接多台设备等诸多优点,已经成为计算机及其他设备的的标准接口。 [0002] USB interfaces because of its hot-swappable, unified standard, you can connect multiple devices and many other advantages, it has become the computers and other equipment of a standard interface. 然而现有的利用USB接口连接的设备之间,基本都是通过A型USB接口(公口)与B型USB接口(母口)直接相连,而没有进行信号隔离,当两台或多台设备之间由于外界雷击、强电干扰、电源电压波动等原因产生电位差时,容易烧坏接口芯片,造成通信中断,给用户带来经济损失。 However, among the conventional devices with the USB interface, basically using a type A USB interface (public interface) directly connected to the USB type B connector (female port), no signal isolation and, when two or more devices due to the potential difference between the external lightning, strong electrical interference, supply voltage fluctuations and other causes, easy to burn out interface chip, resulting in interruption of communication, giving users economic losses.

[0003] 现在的一些医疗仪器、高电压数据采集设备和人机接口设备上也有使用USB接口,但是这些设备对USB接口的耐压提出了更高的要求,目前的USB接口一般还不能承受这些设备对高压要求。 [0003] also use the USB interface, but these devices to withstand the USB interface of a higher demand on the current number of medical devices, high-voltage data acquisition devices and human interface devices, the current USB interface generally can not withstand these high-pressure equipment requirements.

[0004] CN200720305047. 4 的专利公开了一种USB 与RS_232、RS_485 或RS-422 等标准串行通信接口的接口隔离转换器,其采用光耦隔离器和TTL电路实现两种不同结构接口间电压的隔离与转换。 [0004] Patent No. CN200720305047. 4 discloses an interface standard isolating converter serial communication interface with a USB RS_232, RS_485 RS-422 or the like, employing optocouplers and TTL circuits implement the interface voltage between two different configurations the isolation and conversion. 由于其采用的光耦隔离器的功耗较高,而且存在不稳定的电流传输率和电流的非线性传输性,因此传输速率较低,其使用的温度范围较窄,使用寿命也比较短。 Used because of its high power optical isolators, and nonlinear current transmission rate and the transmission of the current unstable, and therefore lower transmission rate, the use of a narrow temperature range, the service life is relatively short.

发明内容 SUMMARY

[0005] 本发明的目的是提供一种功耗小、传输率高、耐高压的一种USB设备隔离器。 [0005] The object of the present invention is to provide a small one of the power, transmission rate, a high pressure separator USB device.

[0006] 本发明采用的技术方案是这样的:一种USB设备隔离器,包括A型USB接口、B型USB接口和隔离单元,所述隔离单元包括信号隔离单元和电源隔离单元,所述信号隔离单元的输入接口与A型USB接口的信号传输口电连接,信号隔离单元的输出接口与B型USB接口的信号传输口电连接,所述A型USB接口的电源信号与所述B型USB接口的电源信号通过所述电源隔离单元电连接。 [0006] aspect of the present invention is employed: one isolator USB device comprising a USB interface type A, B and USB interface isolation unit, said isolation unit includes a signal isolation unit and a power supply unit isolated from the signal an input interface with the a-type USB interface of a signal transmission port isolation unit is electrically connected to an output interface signal isolation unit B the signal transmission port is electrically connected to USB interface, the USB interface a power signal and the USB type B a signal interface connected to the power supply through the power unit is electrically isolating.

[0007] 上述隔离单元的信号隔离单元包括ADUM4160隔离器,电源隔离单元包括H0505s-lff隔离器。 Signal isolation unit [0007] The isolation unit comprises ADUM4160 isolators, power isolation unit comprises H0505s-lff isolator. A型USB接口的1号端口与电源电连接,2号端口和3号端口分别通过第一电阻Rl和第二电阻R2与ADuM4160隔离器的6号端口和7号端口电连接,4号端口接地;B型USB接口的1号端口与H05(^s-lW隔离器的4号端口电连接,2号端口和3号端口分别通过第三电阻R3和第四电阻R4与ADuM4160隔离器的11号端口和10号端口电连接, 4号端口接地;H050k-lW隔离器的1号端口与A型USB接口的1号端口电连接,2号端口和3号端口均接地;ADuM4160隔离器的1号端口与A型USB接口的1号端口电连接,2号端口、8号端口、9号端口和15好端口均接地,3号端口、4号端口和5号端口并联后通过第二电容C2接地,12号端口、13号端口和14号端口并联后通过第四电容C4接地,16端口与H0505s-lff隔离器的4号端口电连接。 Type A USB port number 1 is connected to a power supply interface, port 2 and port 3 is connected through port 6 and port 7 of the first resistor Rl and a second electrical resistor R2 ADuM4160 isolator, port 4, Ground ; H05 B port 1 and USB interface (port 4 ^ s-lW electrically connected to the isolator, port 2 and port 3 respectively through a No. third resistor R3 and the fourth resistor R4 and ADuM4160 isolator 11 port and port 10 is electrically connected to the port grounding 4; port 1 and port 1 of the electrically H050k-lW isolator a USB interface is connected to port 2 and port 3 are grounded; 1 the ADuM4160 isolator port 1 and port a is electrically connected to USB interface, port 2, port 8, port numbers 9 and 15 are grounded good port, port 3, port 4, the parallel port 5 and the second capacitor C2 is grounded by , port number 12, number 13, port 4, port 16 is electrically H0505s-lff isolator capacitor C4 is grounded via a fourth port and the ports 14 in parallel.

[0008] 具体的,还包括第一电容Cl、第三电容C3、第五电容C5和第六电容C6,第一电容Cl的一端接ADuM4160隔离器的1号端口,另一端接地;第三电容C3的一端接ADuM4160隔 [0008] Specifically, further comprising a first capacitor Cl, the third capacitor C3, a fifth capacitor C5, and sixth capacitor C6, one end of the first capacitor Cl ADuM4160 isolator port 1, the other end grounded; third capacitance C3 is a spacer terminating ADuM4160

3离器的16号端口,另一端接地;第五电容C5的一端接H050k-lW隔离器的1号端口,另一端接地;第六电容C6的一端接H050k-lW隔离器的4号端口,另一端接地。 3 from the port 16, the other end of the device; one end of the fifth capacitor C5 H050k-lW port isolator 1, the other end grounded; sixth capacitor one end of the isolator H050k-lW-C6 port 4, other end. 第一电容Cl和第三电容C3均为0. 1 μ F电容,第五电容C5和第六电容C6均为0. 47 μ F电容。 A first capacitor Cl and the third capacitor C3 are 0. 1 μ F capacitor, the fifth capacitor C5, and sixth capacitor C6 are 0. 47 μ F capacitor.

[0009] 具体的,第一电阻R1、第二电阻R2、第三电阻R3和第四电阻R4均为M Ω电阻。 [0009] Specifically, the first resistor R1, second resistor R2, third resistor R3 and the fourth resistor R4 are M Ω resistor.

[0010] 具体的,第二电容C2和第四电容C4均为0. IyF电容。 [0010] Specifically, the second capacitor C2 and the fourth capacitor C4 are 0. IyF capacitance.

[0011] 综上所述,由于采用了上述技术方案,本发明的有益效果是: [0011] In summary, the use of the above technical solutions, advantageous effects of the present invention are:

[0012] 1、信号隔离采用磁耦的ADUM4160隔离器,使USB设备隔离器的功耗仅为光耦隔离器的1/6-1/10,传输速率大大提高。 [0012] 1, using the magnetic coupling of the signal isolation ADUM4160 isolators, isolator USB device power consumption optocouplers only 1 / 6-1 / 10, greatly improve the transfer rate.

[0013] 2、电源隔离采用H05(^s_lW隔离器,可以高USB隔离设备的耐压能力。 [0013] 2, using the power isolation H05 (^ s_lW separator, high pressure capacity can be isolated USB device.

[0014] 3、集成化程度高,相对其他同类型产品成本更低、尺寸更小。 [0014] 3, a high degree of integration, other similar products a relatively lower cost, smaller size.

附图说明 BRIEF DESCRIPTION

[0015] 本发明将通过例子并参照附图的方式说明,其中: [0015] The embodiment of the present invention and will be described by way of example with reference to the accompanying drawings, wherein:

[0016] 图1是本发明USB设备隔离器的原理框图。 [0016] FIG. 1 is a block diagram of a USB device of the present invention isolator.

[0017] 图2是ADUM4160隔离器的封装引脚图。 [0017] FIG. 2 is a package pin ADUM4160 isolator FIG.

[0018] 图3是本发明USB设备隔离器的电路原理图。 [0018] FIG. 3 is a schematic circuit diagram of the isolator of the USB device of the present invention.

具体实施方式 Detailed ways

[0019] 本说明书中公开的所有特征,或公开的所有方法或过程中的步骤,除了互相排斥的特征和/或步骤以外,均可以以任何方式组合。 [0019] All of the features disclosed in this specification, or all of the methods disclosed processes or steps, except the mutually exclusive features and / or steps, can be combined in any manner.

[0020] 本说明书(包括任何附加权利要求、摘要和附图)中公开的任一特征,除非特别叙述,均可被其他等效或具有类似目的的替代特征加以替换。 [0020] in this specification (including any accompanying claims, abstract and drawings) disclosed in any of the features, unless specifically described, can be replaced by other equivalent or alternative features having similar purpose. 即,除非特别叙述,每个特征只是一系列等效或类似特征中的一个例子而已。 That is, unless specifically described, each feature is only one example of a series of equivalent or similar features only.

[0021] 如图1所示,一种USB设备隔离器,包括A型USB接口(公口)、B型USB接口(母口)和隔离单元,所述隔离单元包括信号隔离单元和电源隔离单元,所述信号隔离单元的输入接口与A型USB接口的信号传输口电连接,信号隔离单元的输出接口与B型USB接口的信号传输口电连接,所述A型USB接口的电源信号与所述B型USB接口的电源信号通过所述电源隔离单元电连接。 [0021] As shown in FIG An isolator 1 USB device comprising a USB interface type A (male port), B type USB connector (female port) and an isolation unit, said isolation unit includes a signal isolation unit and the power supply isolation unit , the signal transmission port is electrically connected to the signal output interface type B communication port electrically connected to signal isolation unit is an input interface with the a-type signal isolation unit USB interface USB interface, the USB interface a power supply signal and the said power signal B USB interface connector via the electrical power supply isolation unit.

[0022] 在本发明中,所述隔离单元的信号隔离单元采用ADUM4160隔离器,也可以采用其他磁耦隔离器,ADuM4160隔离器的封装图如图2所示。 Signal isolation unit [0022] In the present invention, the isolation unit employed ADUM4160 separator, magnetic coupling may be employed other isolator, FIG ADuM4160 isolator package shown in FIG. 电源隔离单元包括H05(^s_lW隔离 Power supply isolation means comprises H05 (^ s_lW isolation

ο ο

[0023] 如图3所示,是本发明USB设备隔离器的电路原理图,A型USB接口的1号端口与电源电连接,2号端口和3号端口分别通过第一电阻Rl和第二电阻R2与ADuM4160隔离器的6号端口和7号端口电连接,4号端口接地;B型USB接口的1号端口与H05(^s-lW隔离器的4号端口电连接,2号端口和3号端口分别通过第三电阻R3和第四电阻R4与ADuM4160 隔离器的11号端口和10号端口电连接,4号端口接地;H050k-lW隔离器的1号端口与A 型USB接口的1号端口电连接,2号端口和3号端口均接地;ADuM4160隔离器的1号端口与A型USB接口的1号端口电连接,2号端口、8号端口、9号端口和15好端口均接地,3号端口、4号端口和5号端口并联后通过第二电容C2接地,12号端口、13号端口和14号端口并联后通过第四电容C4接地,16端口与H050k-lW隔离器的4号端口电连接。还包括第一电容Cl、第三电容C3、第五电容C5和第六电容C6 [0023] As shown in FIG 3, the USB device is a circuit diagram of the isolator of the present invention, port 1 with a power source A connected to USB interface, port 2 and port 3 respectively through first and second resistors Rl port 6 and port 7 is electrically connected to the resistor R2 and ADuM4160 isolator, port 4 is grounded; port 1 and H05 B USB interface (^ 4 port electrical connector s-lW isolator, port 2, and port 3 respectively and the third resistor R3 and the fourth resistor R4 ADuM4160 isolator port 11 and port 10 is electrically connected to a ground port 4; 1 1 a USB interface port of the isolator H050k-lW No. port electrical connector, port 2 and port 3 are grounded; 1-port electrical port 1 and type a USB interface ADuM4160 isolator is connected to port 2, port 8, port 9 and 15 good ports ground, port 3, port 4 and 5 the parallel port is grounded through the second capacitor C2, the port 12, the port 13 and the parallel port 14 is grounded through the fourth capacitor C4, 16 port isolator H050k-lW the port 4 is electrically connected to a first capacitor further comprises a Cl, the third capacitor C3, a fifth capacitor C5, and sixth capacitor C6 ,第一电容Cl的一端接ADuM4160隔离器的1号端口,另一端接地;第三电容C3的一端接ADUM4160隔离器的16号端口,另一端接地;第五电容C5的一端接H050k-lW隔离器的1号端口,另一端接地;第六电容C6的一端接H05(^s-lW隔离器的4号端口,另一端接地。第一电容Cl和第三电容C3均为0. 1 μ F电容,第五电容C5和第六电容C6均为0. 47 μ F电容。 , A first end of capacitor Cl ADuM4160 isolator port 1, the other end grounded; a third capacitor C3 of the end isolator 16 ADUM4160 port and the other end is grounded; H050k-lW one end of the fifth capacitor C5 isolation the port number is 1, the other end is grounded; sixth capacitor one end of H05 C6 (^ 4 s-lW-port isolator, the other end of the first capacitor Cl and the third capacitor C3 are 0. 1 μ F capacitor, a fifth capacitor C5, and sixth capacitor C6 are 0. 47 μ F capacitor.

[0024] 具体的,第一电阻R1、第二电阻R2、第三电阻R3和第四电阻R4均为M Ω电阻。 [0024] Specifically, the first resistor R1, second resistor R2, third resistor R3 and the fourth resistor R4 are M Ω resistor.

[0025] 具体的,第二电容C2和第四电容C4均为0. IyF电容。 [0025] Specifically, the second capacitor C2 and the fourth capacitor C4 are 0. IyF capacitance.

[0026] 本发明的USB设备隔离器与USB设备和计算机连接。 [0026] USB devices isolator of the present invention is connected to a computer and USB device. A型USB接口与计算机连接, 计算机的电源信号通过A型USB接口的1号端口传输至H050k-lW隔离器,经由H05(^s_lW 隔离器对电源信号进行隔离后的电源信号,再经由B型USB接口的1号端口传输至USB设备,给USB设备供电。 A USB interface connected to a computer, the power supply signal from the computer port transmission number. 1 A USB interface through to H050k-lW isolator, (^ s_lW isolator power supply signal for power signal isolation through H05, and then through the B-type 1 USB interface port to a USB device, power supply to the USB device.

[0027] 同时,本发明的计算机的数据信号经由A型USB接口的2、3号端口传输至ADuM4160隔离器,数据信号经过隔离器隔离后通过B型USB接口的2、3号端口传输至USB设备;USB设备的数据信号亦可通过反向的路径传输至计算机,数据交互传输通路形成,USB 设备与计算机进入正常通信状态。 [0027] Also, the present invention is a computer data signal transmission 2,3 port A via the USB interface to the ADuM4160 isolator, after the data signal separated by the isolator 2,3 port transmission type B USB interface to a USB apparatus; USB data signal may also be transferred to the computer device, the data transmission path formed by the interaction of a reverse path, the USB device and the computer enters the normal communication state.

[0028] 本发明并不局限于前述的具体实施方式。 [0028] The present invention is not limited to the foregoing specific embodiments. 本发明扩展到任何在本说明书中披露的新特征或任何新的组合,以及披露的任一新的方法或过程的步骤或任何新的组合。 The present invention extends to any novel features disclosed in this specification, or any novel combination, or any novel combination, and any steps disclosed a new method or process.

Claims (7)

1. 一种USB设备隔离器,包括A型USB接口、B型USB接口和隔离单元,其特征在于,所述隔离单元包括信号隔离单元和电源隔离单元,所述信号隔离单元的输入接口与A型USB 接口的信号传输口电连接,信号隔离单元的输出接口与B型USB接口的信号传输口电连接, 所述A型USB接口的电源信号与所述B型USB接口的电源信号通过所述电源隔离单元电连接。 An isolator USB device comprising a USB interface type A, B and isolation USB interface unit, wherein said isolation means comprises a power supply unit and a signal isolation isolation unit, and the input interface A signal isolation unit signal transmission port is electrically connected to USB interface, an output interface signal isolation unit B the signal transmission port is electrically connected to USB interface, the USB interface a power supply signal and the B signal by the USB interface power supply isolation unit is electrically connected.
2.根据权利要求1所述的一种USB设备隔离器,其特征在于,所述隔离单元的信号隔离单元包括ADuM4160隔离器,电源隔离单元包括H05(^s-lW隔离器。 2. The apparatus according to claim requires a USB isolator of claim 1, wherein said isolation means comprises signal isolation unit ADuM4160 isolator, the isolation unit comprises a power supply H05 (^ s-lW isolator.
3.根据权利要求2所述的一种USB设备隔离器,其特征在于,A型USB接口的1号端口与电源电连接,2号端口和3号端口分别通过第一电阻(Rl)和第二电阻(R2)与ADuM4160 隔离器的6号端口和7号端口电连接,4号端口接地;B型USB接口的1号端口与H05(^s-lW 隔离器的4号端口电连接,2号端口和3号端口分别通过第三电阻(R3)和第四电阻(R4)与ADuM4160隔离器的11号端口和10号端口电连接,4号端口接地;H05(^s_lW隔离器的1号端口与A型USB接口的1号端口电连接,2号端口和3号端口均接地;ADuM4160隔离器的1 号端口与A型USB接口的1号端口电连接,2号端口、8号端口、9号端口和15好端口均接地,3号端口、4号端口和5号端口并联后通过第二电容(C2)接地,12号端口、13号端口和14号端口并联后通过第四电容(C4)接地,16端口与H05(^s-lW隔离器的4号端口电连接。 3. The isolator according to one USB device according to claim 2, characterized in that the port 1 with a power source A connected to USB interface, port 2 and port 3, respectively, via a first resistor (Rl) and port 6 and port 7 is electrically second resistor (R2) and the ADuM4160 isolator connected to port 4 is grounded; port 1 and H05 B USB interface (^ 4-port electrical s-lW separator is connected, 2 and port number port 3 and port 11 respectively the port number 10 ADuM4160 isolator electrically connected, a ground port 4 through the third resistor (R3) and the fourth resistor (R4); No. 1 H05 (^ s_lW isolator port port 1 is electrically a USB interface is connected to port 2 and port 3 are grounded; port 1 and the a type 1 port electrical USB interface connector ADuM4160 isolator, port 2, port 8, port 9 and port well 15 are grounded, port 3, port 4 and 5 grounded through a second capacitor (C2) in parallel to the port, the port 12, the port 13 and parallel port 14 through a fourth capacitance ( 4-port electrical C4) to ground, and the port 16 H05 (^ s-lW separator is connected.
4.根据权利要求3所述的一种USB设备隔离器,其特征在于,还包括第一电容(Cl)、第三电容(C3)、第五电容(C5)和第六电容(C6),第一电容(Cl)的一端接ADuM4160隔离器的1号端口,另一端接地;第三电容(C3)的一端接ADUM4160隔离器的16号端口,另一端接地; 第五电容(C5)的一端接H050k-lW隔离器的1号端口,另一端接地;第六电容(C6)的一端接H050k-lW隔离器的4号端口,另一端接地。 4. The apparatus according to claim isolator requires a USB claim 3, characterized by further comprising a first capacitor (Cl), a third capacitor (C3), a fifth capacitor (C5) and the sixth capacitor (C6), No. 1 port of the first capacitor (Cl) connected at one end ADuM4160 isolator, the other end grounded; a third capacitor (C3) connected at one end ADUM4160 port isolator 16, the other end grounded; end of the fifth capacitor (C5) of H050k-lW access port 1 of the isolator, and the other end is grounded; port 4 a sixth capacitor (C6) connected at one end H050k-lW isolator ground.
5.根据权利要求4所述的一种USB设备隔离器,其特征在于,第一电容(Cl)和第三电容(C3)均为0. IyF电容,第五电容(C5)和第六电容(C6)均为0. 47 μ F电容。 5. The isolator according to one USB device according to claim 4, characterized in that the first capacitor (Cl) and the third capacitor (C3) are 0. IyF capacitor, a fifth capacitor (C5) and the sixth capacitor (C6) are all 0. 47 μ F capacitor.
6.根据权利要求3所述的一种USB设备隔离器,其特征在于,第一电阻(R1)、第二电阻(R2)、第三电阻(R3)和第四电阻(R4)均为ΜΩ电阻。 6. A separator according to one USB device according to claim 3, characterized in that the first resistor (Rl), a second resistor (R2), a third resistor (R3) and a fourth resistor (R4) are ΜΩ resistance.
7.根据权利要求3所述的一种USB设备隔离器,其特征在于,第二电容(C2)和第四电容(C4)均为0. IyF电容。 7. A separator according to one USB device according to claim 3, characterized in that the second capacitor (C2) and a fourth capacitor (C4) capacitors are 0. IyF.
CN2010102270295A 2010-07-14 2010-07-14 USB device isolator CN102331980A (en)

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CN103559163A (en) * 2013-11-11 2014-02-05 上海航天测控通信研究所 Signal isolating and conditioning device and method capable of configuring multiple functional modules
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