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IsoLoop隔离芯片的应用图例
具有共模抗干扰性和磁场抗干扰性，促进了产品的可靠性，具有不会退化的无限寿命。减小板面尺寸到每个MSOP是双通道的，直到在0.15英寸的窄体SOIC中具有5通道。通用的IsoLoop隔离芯片的应用包括在PLC产品中，RS-485，PROFIBUS，CAN，I2C，SPI，高保真度音频设备，以及电源接口。
PLCs
- IL600-Series Isolators for True Channel-to-Channel Isolation
- IL600系列隔离芯片，实现真实的通道到通道隔离
RS-422/RS-485/PROFIBUS
- Single-Chip RS-485/PROFIBUS Isolated Transceivers
- 单芯片RS-485/PROFIBUS隔离收发器
- Single-Component RS-485 Receiver Using IL610
- 用IL610实现单元件隔离RS-485接收端
- Single-Chip RS-422 Isolated Transceivers
- 单芯片RS-422隔离收发器
- RS-422 Network with Two IL610 Receivers
- 用两个IL610接收器实现隔离RS-422网络
- RS-485 Repeater Using IL610
- 用IL610实现隔离RS-485的转发器
- Isolated Fractional Load RS-485 Using IL614
- 用IL614实现隔离部分负载的RS-485
- PROFIBUS Using IL3685 Single-Chip Transceiver
- 用IL3685实现单芯片的PROFIBUS隔离收发器
- Isolated PROFIBUS Using IL710 and IL711
- 用IL710和IL711实现隔离PROFIBUS
Controller Area Network (CAN) Bus
- Simple Isolated CAN Bus Using IL612
- 用IL612实现简易隔离CAN总线
- High-Temperature Isolated CAN Bus Using IL712T
- 用IL712T实现高温隔离CAN总线
- Isolated CAN Using IL712
- 用IL712隔离CAN总线
Other Serial Interfaces
- Differential Signal Isolation Using an IL611
- 用一个IL611实现差分信号隔离
- Isolated RS-232 Using IL712s
- 用IL712实现隔离RS-232
- Isolated I²C Using IL612A
- 用IL612A实现隔离I2C
- Isolated USB Using IL710s
- 用IL710实现隔离USB
- Isolated Inter-IC Sound (I²S) Using IL710/IL711
- 用IL710/IL711实现隔离高速音频信号I²S
Isolated ADCs, DACs and Serial Peripheral Interface (SPI)
- Single-Channel Isolated SPI Delta-Sigma A/D Converter Using IL717
- 用IL717实现单通道隔离SPI Delta-Sigma A/D转换器
- Multi-Channel Isolated Sampling A/D Converter Using IL261
- 用IL261实现多通道隔离采样A/D转换器
- Multi-Channel Isolated SPI Delta-Sigma A/D Converter Using IL261
- 用IL261实现多通道隔离SPI Delta-Sigma A/D转换器
- Isolated Multi-Channel SPI Sampling With IL262
- 用IL262实现隔离多通道的SPI采样信号
- Isolated 12-Bit DAC Using Three IL515s
- 用三个IL515实现隔离12通道的DAC转换器
- Isolated Audio DAC Using Two IL260s
- 用两个IL260实现隔离音频DAC转换器
High-Fidelity Audio
- SIsolated Inter-IC Sound (I²S) Using IL710/IL711
- 用IL710/IL711实现隔离高速音频信号
- Isolated Audio DAC Using Two IL260s
- 用两个IL260实现隔离音频DAC转换
Power Interfaces
- Intelligent DC-DC Converter With Synchronous Rectification
- 具有同步整流的智能DC-DC转换器
- Isolated Power Control Using IL610s
- 用IL610实现隔离电源控制
- Isolated 120 VAC Line Monitor Using IL610A
- 用IL610A实现隔离120V AC线控
- Multi-Channel Isolated Alarm Monitor Using IL610As
- 用IL610A实现多通道隔离报警监控
IL600-Series Isolators for True Channel-to-Channel Isolation
IL600系列隔离芯片，实现真实的通道到通道隔离
In addition to 2,500 Vrms input-to-output withstand voltage, the IL600 series of IsoLoop isolators provide outstanding isolation of 400 Vrms between adjacent channels. These unique devices allow very simple channel separation in industrial process control applications, especially PLCs, where the reference ground of each channel may be different. The data line is powered by the signal, so no input power supply is required. With two channels available in the tiny MSOP footprint, more functionality can be crammed into a smaller space without sacrificing channel-to-channel or ground-to-ground isolation.
除了2500Vrms输入到输出的抵挡电压之外， IsoLoop隔离芯片的IL600系列提供了杰出的400Vrms相邻通道间的隔离。这些特别的功能允许在工业过程控制应用中的非常简易的通道隔离，特别是PLCs，每个通道的参考地都可能不一样。数据线由信号提供能量，所以没有需要提供输入功率。在微小的MSOP封装下具有两个通道，在不牺牲通道到通道的隔离或者地道地的隔离时，如此小的空间中能够塞进更多的功能。
Single-Chip RS-485/PROFIBUS Isolated Transceivers
单芯片实现RS-485/PROFIBUS隔离收发器
NVE offers the industry's broadest line of single-chip isolated RS-485 transceivers, including digital- and passive-input versions, fractional-load versions, and PROFIBUS-compliant versions. Termination resistors can be added to maximize speed and transmission length. Fail-safe resistors guarantee a known state on a terminated bus with no active transceivers. NVE transceivers are available with data rates are up to 40 Mbps. Parts are available in 0.3" and 0.15" 16-pin SOIC packages.
IsoLoop logic isolators can also be used as part of multi-chip designs to isolate signals using particular non-isolated transceivers (see examples below).
NVE提供了工业板级的单芯片隔离RS-485收发器，包括数字和线圈输入版本，部分负载版本，PROFIBUS兼容的版本。终端电阻RT的使用可以使传输速度最大，传输距离更长。失效保护电阻RFS确保在总线的收发端没有动作时得到一个已知状态。NVE收发器的数据率可以达到40Mbps。部分产品是0.3inch和0.15inch 16pin的SOIC封装方式。
IsoLoop逻辑隔离芯片可以多个芯片组合完成隔离信号的作用，一般用在特殊的非隔离收发器的场所（见下面的案例）。
Single-Component RS-485 Receiver Using IL610
使用IL610实现隔离单端元的RS-485接收端
An IL610 can be used as a simple isolated RS-485/RS-422 receiver. No external resistors are required, and cabling is greatly simplified by eliminating the need to power the input side of the receiving board. The circuit is failsafe because the IL610 is guaranteed to switch to the high state when the coil input current is less than 500 µA. No current-limiting resistor is needed for a single receiver because it will draw less current than the driver maximum. There is also no need for line termination resistors in most IL610 line receiver applications below a data rate of about 10 Mbps because the IL610 coil resistance of approximately 70 Ohms is close to the characteristic impedance of most cables.
The IL610 provides 2.5 kVrms isolation (one minute), and 20 kV/µs transient immunity. The IL610-1 is a unique MSOP isolator for space-critical boards.
For more information on using IL600-Series Isolators as differential receivers, see Application Bulletin No. 10 (.pdf).
一个IL610用来简单的隔离RS-485/RS-422接收端。不需要外部电阻，因为传输电缆会明显削弱接收端所需的能量。电路在发生故障时可用确保安全的，因为IL610能确保在线圈输入电流低于500µA时开关到高状态。在单个的输入端不需要电流限制型电阻因为相对于驱动需要的大电流而言，它只引起很少的电流。在大多少数据率低于10Mbps的IL610接收端应用中也不需要终端电阻（匹配电阻）因为IL610的线圈阻值大约是70Ohms，正好接近于大多数电缆的特征阻抗。
IL610提供2.5kVrms隔离（1分钟）和20kV/μs 抗瞬变能力。独特的IL610MSOP一般应用在严格要求尺寸的板上。
关于使用IL600系列隔离芯片的更多信息，请看差分接受，查看应用报告No.10(.pdf)
Single-Chip RS-422 Isolated Transceivers
单芯片RS-422隔离收发器
NVE’s single-chip isolated RS-422 transceivers include digital- and passive-input versions, and fractional-load versions. Termination resistors can be added to maximize speed and transmission length. Fail-safe resistors guarantee a known state on a terminated bus with no active transceivers. NVE transceivers are available with data rates are up to 40 Mbps. Parts are available in 0.3" and 0.15" 16-pin SOIC packages.
NVE的单芯片RS-422隔离收发器包括CMOS输入型、线圈输入型和小负载型。如果设计中使用终端电阻的话，可以使数据速率最大化和延长传输距离。失效保护电阻确保在没有有效传输时，总线的终端提供一个已知的状态。NVE的隔离收发器能够做到最高有效数据率达到40 Mbps。部分产品有0.15”和0.3”的16-pin SOIC封装方式。
RS-422 Network with Two IL610 Receivers
用两个IL610接收器实现RS-422网络
This circuit shows a two-receiver RS-422 network using IL610s. Two 17 Ohm current-limiting resistors prevent two IL610 coils from exceeding the maximum load of the transceiver chip. Placement of the current-limiting resistors on both lines provides better dynamic signal balance.
此电路是使用两个IL610实现的两个RS-422网络的接收部分的隔离。两个17Ω限流电阻阻止了进入两个IL610线圈的电流不能超过它的最大负载。在两根线上都设置了限流电阻能够提供更好的动态信号平衡。
RS-485 Repeater Using IL610
用IL610完成隔离RS-485转发器
Simple, low cost, isolated repeater systems can be made with an RS-422 transmitter/receiver pair (or an RS-485 transceiver in drive mode) and an IL610. Repeaters can extend the useful cable length and node count indefinitely, provided the network controller can tolerate the additional propagation delays.
简易的，低成本的隔离转发器系统作为参考，此系统由IL610和RS-422接收器/发射器对（或者驱动模式下的RS-485收发器）组成。转发器可以延伸有用的电缆长度和增加不确定的节点数，转发器可作为提供网络控制器可以接受额外的传输延迟。
Isolated Fractional Load RS-485 Using IL614
用IL614实现隔离部分负载的RS-485
NVE offers a broad line of single-chip isolated RS-485 transceivers, but the unique IL614 three-channel isolator can also be used as part of a multi-chip design with non-isolated transceivers. The IL614 provides 2.5 kVrms isolation (1 minute) and 20 kV/µs transient immunity. The IL614-3 is in a narrow-body (0.15"-wide) package when board space is critical.
使用IL614隔离部分负载的RS-485。NVE提供单芯片隔离RS-485收发器，但是独特的IL614三通道隔离芯片件也能在多芯片非隔离收发器中使用。IL614提供2.5kVRMS隔离电压（一分钟），20kV/µs的抗瞬变能力。IL614-3是一款窄体（0.15inch宽度）封装器件，可以在板面空间要求严格时考虑使用。
Isolated PROFIBUS Using IL3685 Single-Chip Transceiver
用IL3685实现单芯片的PROFIBUS隔离收发器
The 220 ohm termination resistor, along with another 220 ohm resistor and the other end of the bus, matches the bus impedance to minimize reflections. The 390 ohm "fail-safe" resistors guarantee a known state with no active transceivers. Bypass capacitors should be placed as close as possible to the appropriate IC.
使用两个220Ω的终端电阻和总线收发端所组成的总线匹配阻抗能够尽量的使反射最小化。390Ω的失效保护电阻确保在没有有效传输提供一个已知信号。旁路电容应放置在尽可能靠近IC的地方。
Isolated PROFIBUS Using IL710 and IL711
使用IL710和IL711隔离PROFIBUS
NVE offers the unique IL3685 single-chip isolated PROFIBUS transceiver, but IL700 high-speed digital signal isolators can also be used as part of multi-chip designs using non-isolated PROFIBUS transceivers. Circuits can be configured with three IL710s (circuit above) or one IL710 and one IL711 (circuit below). The IL710 and IL711 provide 2.5 kVrms isolation (1 minute) and 30 kV/µs typical common-mode transient immunity. The IL710-1 and IL711-1 are unique MSOP one- and two-channel isolators to minimize board space.
NVE提供了独特的IL3585单芯片隔离PROFIBUS收发器，但是IL700高速数字信号隔离芯片也可以用于多芯片设计的一部分，非隔离型PROFIBUS收发器。此电路可配置成3个IL710s（参照上面电路结构）或者一个IL710和一个IL711（参照下面的电路结构）。IL710和IL711提供了2.5kVrms的隔离电压（一分钟内）和30kV/μs典型的共模传输抑制。IL710-1和IL711-1是独特的MSOP单通道或双通道隔离芯片，板面使用尺寸达到最小。
Simple Isolated Controller Area Network (CAN) Bus Using IL612
使用IL612实现简单的隔离CAN总线
Low pulse width distortion is critical for CAN bus, and IL600 Isolators are specified for just 3 ns typical pulse width distortion. Their fail-safe output (logic high output for zero coil current) ensures ensures recessive bus state on power-up with no additional circuitry. The speed of IL600 Isolators easily supports the maximum CAN bus transfer speed of 1 Mbps. The IL612 provides 2.5 kVrms isolation (1 minute) and 20 kV/µs transient immunity.
对于CAN总线，低脉宽失真是它的关键。IL600隔离芯片被定义为只有3ns典型脉宽失真。故障保护输出（对于0线圈电流是逻辑高状态）确保逆行总线在电源上升时没有外加的电路。IL600隔离芯片的速度最大的CAN总线传输速度为1Mbps。IL612提供2.5kVRMS隔离电压（一分钟），20kV/µs的抗瞬变能力。
High-Temperature Isolated CAN Bus Using IL712T
用IL712T可以隔离高温下的CAN总线
With a maximum operating temperature of 125°C and no derating, the IL712T tolerates the harshest CAN bus environments. The IL712T also provides one-third to one-fourth the propagation delay of the fastest optocouplers. In this circuit, the SN74F02 provides fail-safe start-up.
最高操作温度可以达到125oC并且不会降低定额值。IL712T能够处理CAN总线在比较恶劣的环境下工作。IL712T同时能够提供最快光耦隔离芯片的1/3到1/4的传输延时。电路中，SN74F02能提供刚开始时的故障保护。
Isolated CAN Using IL712
用IL712隔离CAN总线
In today’s CAN networks, node-to-node isolation is increasingly recommended by designers to reduce EMI susceptibility, especially in highspeed applications and in hybrid and electrical vehicle networks, where the 12 V battery has been replaced with one of several hundred volts.
Operator and equipment safety becomes critical when a high voltage source, such as the battery, needs to be connected to diagnosis systems during routine maintenance procedures. In the application shown above, the microcontroller is isolated from the CAN transceiver by an IL712, allowing higher speed and more reliable bus operation by eliminating ground loops and reducing susceptibility to noise and EMI events.
The IL712’s best-in-class 10 ns typical propagation delay minimizes CAN loop delay and maximizes data rate over any given bus length.
The simple circuit works with any CAN transceiver with a TxD dominant timeout, which includes all of the current-generation transceivers.
在当今的CAN总线网络使用中，越来越多的设计者采用节点隔离技术来减少EMI影响，尤其在高速传输的总线，在混合动力汽车网络中都会应用到。12V的电池电压被几百伏电压取代。
当使用高电压源，比如电池，当运行主控程序时需要连接到监控系统中，这时，操作者和设备的安全问题就会显得更为重要。上面所示的应用案例中，主控芯片与CAN传输线之间用IL712进行隔离，通过降低地回路影响和减少噪声和EMI影响，这样可以提供更高速的和可靠性更高的总线传输。
IL712系列具有最佳的10ns典型传输延迟，在超过任何给定的总线长度的情况下，此功能能够最小化CAN回路的延迟，使得传输速率最大化。
很简单的电路就可以实现任何具有TxD明显超时的CAN总线传输，其包括了所有的当今所使用的CAN传输。
Differential Signal Isolation Using an IL611
用一个IL611对于差分信号的隔离
IL600-Series Isolators are ideal for isolating differential signals because you have access to the input coils and do not need input power to drive the signal across the barrier. When the voltage at node Y is greater than the voltage at node Z there is a logic high at the OUT+ node and a low on the OUT- node. Outputs are reversed when the voltage at node Z is higher than the voltage at node Y. Current-limiting resistors can be selected to ensure input coil currents are at least ±5 mA and no more than ±10 mA.
IL600系列隔离芯片是理想的用于差分信号的隔离，因为你可以使用输入线圈而不需要输入电源来驱动信号通过隔离区。当在节点Y上的电压大于节点Z上的电压时，在OUT+节点上输出高电平，在OUT-节点上输出低电平。当节点Z上的电压大于节点Y上的电压时，输出是相反的。在输入端加入限流电阻的作用是确保输入线圈电流不少于±5mA和不超过±10mA。
Isolated RS-232 Using IL712
用IL712来隔离RS-232串口总线
IL712 provide 2.5 kVrms isolation (1 minute) and 30 kV/µs typical common-mode transient immunity. The IL712-1 is a unique MSOP dual-channel isolator to minimize board space.
l712提供了2.5kVrms的隔离电压（一分钟）和30kV/µs的典型共模抗瞬变能力。IL712-1是一款独特的MSOP封装的双通道隔离产品，可以最小化需使用的板面空间。
Isolated I²C Using IL612A
用IL612A隔离I²C总线
This circuit provides bidirectional isolation of I²C bus signals with no restrictions on data rate and none of the I²C bus latch-up problems common with other isolation circuits.
此电路提供了双向隔离I²C总线信号，没有数据率的限制并且没有其他隔离电路中普遍的I²C总线闭锁问题。
Isolated USB Using IL710
用IL710隔离USB总线
In this illustrative circuit, power is supplied by USB bus power on one side of the isolation barrier, and the USB node’s external supply on the other side of the barrier. IL700-Series Isolators are specified at just 3 ns worst-case pulse width distortion. The IL700s provide 2.5 kVrms isolation (1 minute) and 30 kV/µs typical common-mode transient immunity.
在此例中，电源是由隔离芯片后端的USB总线电源提供，在隔离芯片前端是由USB节点的外部提供。IL700系列隔离芯片规格书定义为只有3ns的最坏脉冲宽度失真。IL700提供2.5kVrms隔离电压（一分钟）和30kV/µs的典型共模抗瞬变能力。
Isolated I²S Using IL710/IL711
用IL710/IL711隔离I²S总线线
Isolating a CD transport DAC with an isolated Inter-IC Sound (I²S) bus eliminates ground loops. The IL700-Series isolators' precision edge placement (only 50 ps typical jitter) all but eliminates noise-induced phase error and hum in the analog side of the audio system
隔离CD和DAC之间传输信息的内部IC总线（I²S），减少其地回路。IL700系列隔离产品的精确边缘处置（只有50ps的典型抖动）差不多能减少音频系统的模拟端中包含在噪声相位中的错误和吵杂声。
Single-Channel Isolated SPI Delta-Sigma A/D Converter Using IL717
IL717单通道隔离SPI Delta-Sigma A/D转换器
This circuit illustrates a typical single-channel delta-sigma isolated ADC SPI interface. The ADC is located on the bridge with no signal conditioning electronics between the bridge sensor and the ADC. The IL717 isolates the control bus from the microcontroller and the system clock is located on the isolated side of the system.
这个电路显示了一个典型的单通道的Delta-Sigma隔离A/D转换器的SPI接口电路。模数转换芯片的左边桥接电路，在桥接传感器与ADC之间没有信号环境。在这个案例中，IL717是最好隔离芯片的选择。它隔离了来自微控制器的控制总线。系统时钟也同时被隔离。
Multi-Channel Isolated Sampling A/D Converter Using IL261
用IL261隔离多通道的采样A/D转换器
The IL261 is ideal for isolating multi-channel sampling ADCs. Isolated channels A0 and A1 control the analog channel being sampled, while the three remaining I/O lines on the IL261 isolate the SPI interface.
IL261对于隔离多通道的采样ADCs是最理想的。隔离通道A0和A1控制被采样的模拟通道，同时在IL261有3个保留的I/O线隔离SPI接口。
Multi-Channel Isolated SPI Delta-Sigma A/D Converter Using IL261
用IL261隔离多个Delta-Sigma A/D转换器
This circuit illustrates multiple ADCs configured in a channel-to-channel isolation configuration. The problem for designers is how to control clock jitter and edge placement accuracy of the system clock for each ADC. The best solution is to use a single clock on the system side and distribute this to each ADC. The IL261 adds a fifth channel to the IL717. This fifth channel is used to distribute a single, isolated SPI clock to multiple ADCs.
此电路显示用通道到通道隔离配置出的多个ADCs隔离。对于设计者，最大的挑战是如何控制时钟抖动和对每个ADC的系统时钟的边缘精确性。最好的解决方案是在系统边使用同一个时钟，再分配给每个ADC。相对于IL717而言，IL261增加了第五通道。这个第五通道就是用来分配同一个隔离的时钟给多个ADC。
Isolated Multi-Channel SPI A/D Sampling With IL262
用IL262隔离多通道的SPI A/D采样系统
A multi-channel sampling system with separate A/D cells. The IL262 is used to control the SPI lines and send back ADC BUSY commands to the host, allowing efficient interrupt-driven sampling. The BUSY line may also be used as a frame synchronization signal in video applications.
具有独立的A/D单元的多通道采样系统。IL262能够用来控制SPI总线和发送反馈ADC BUSY命令给主机HOST，允许高效率的中断驱动采样。在视频应用中，BUSY线也可以用作帧同步信号。
Isolated 12-Bit DAC Using Three IL515
用3个IL515隔离12-bit DAC
The IL515 four-channel isolator is ideally suited for parallel bus isolation. The circuit above uses three IL515s to isolate a 12-bit DAC. The unique SYNC function allows the internal clock to be shut off, eliminating the small amount of noise associated with this clock. A reset pulse is applied at power-on to ensure correct data on the isolator outputs. After the reset pulse goes high, data transfer from input to output is initiated by the leading edge of each changing data bit.
IL515四通道隔离芯片是理想的并口总线隔离芯片。上面的电路使用3个IL515隔离一个12-bit的DAC转换器。特别的SYNC性能允许关闭内部时钟，减少与此时钟相关的少量噪声。在上电时使用一个恢复脉冲可以确保在隔离芯片的输出端得到正确的数据。当恢复脉冲变为高电平时，从输入到输出的数据传输开始进行，由每次改变的数据位的首个边缘信号触发。
Isolated Audio DAC Using Two IL260
用两个IL260可以隔离音频信号DAC
Isolation ensures the best DAC performance by eliminating much of the digital noise that tends to find its way onto the analog output. The unique five-channel IL260 isolator series allows ten channels of isolation with just two narrow-body or wide-body ICs.
隔离通过减少大量的会传输到模拟输出端的数字噪声来确保更好的DAC性能。独特的5通道IL260隔离系列仅用两个窄体或宽体芯片能实现10通道的隔离。
Intelligent DC-DC Converter With Synchronous Rectification
智能的同步整流DC-DC转换器
A typical primary-side controller uses a IL511, IL611, or IL711 isolator to drive the synchronous rectification signals from primary side to secondary side. IsoLoop pulse-width distortion as low as 0.3 ns typical minimizes MOSFET dead time and maximizes system efficiency. Ultra-small isolator packages (including two-channel MSOP-8s), allow the designer to squeeze more into less board area.
典型的主控制端使用IL511，IL611，或者IL711来驱动同步整流信号从主端到负端。隔离脉冲宽度失真0.3ns，典型的最小的MOSFET死区时间和最大的系统效率。超小的隔离芯片封装（包括2通道MSOP-8s），让设计者压缩更多的东西到更小的版面。
Isolated Power Control Using IL610
用IL610隔离电源控制端
The fail-safe output (logic high output for zero coil current) of IL600 Isolators ensures the power FETs will be off on power-up. The IL600 inputs can be configured for inverting or non-inverting operation (see IL600 Product Data Sheet). The IL600 Isolators provide 2.5 kVrms isolation (1 minute), and 20 kV/µs transient immunity.
IL610的失效保护输出（当0线圈电流时输出高电平）确保当电源开启时功率FETs被关闭。IL610输入可以被配置成同向或反向操作（参考IL600产品手册）。IL600系列隔离芯片提供2500VRMS隔离电压（一分钟），20kV/µs的抗瞬变能力。
Isolated 120 V AC Line Monitor Using IL610A
用IL610A隔离120V交流电压的线性监控
The wide input voltage range of IL600 Isolators allow connection to line voltage through current-limiting resistors. In this illustrative circuit, "Monitor Out" goes low when line voltage exceeds approximately 100 V, and high when line voltage drops below approximately 10 V. This circuit provides 2.5 kVrms isolation and 20 kV/µs transient immunity.
IL600系列隔离芯片宽的电压输入范围允许通过限流电阻连接到线性电压。在此案例中，当线性电压超过大约100V时，“监控输出”为低电平；当线性电压低于大约10V时“监控输出”为高电平。此电路提供了2.5kVrms隔离电压（一分钟）和20kV/µs的抗瞬变能力。
Multi-Channel Isolated Alarm Monitor Using IL610A
用IL610A完成多通道隔离报警监控
IL600A Isolators' open-drain outputs can be wire-OR connected. A very wide input voltage range is possible, and inputs can be configured for inverting or non-inverting operation (see IL600A Product Data Sheet). This illustrative circuit provides fail-safe output (logic high output for zero coil current), 2.5 kVrms isolation, and 20 kV/µs transient immunity. Typical logic output sink current is 10 mA for each isolator. Unlike optocouplers, IsoLoop Isolators do not degrade over time and have unlimited life.
IL600A隔离芯片采用open-drain输出，能够被线或连接。输入能够被配置成反相或非反相操作，并有非常广的电压输入范围（参考IL600A产品手册）。此案例电路提供了失效保护输出（对于0线圈电流时逻辑高电平输出），2.5kVrms隔离电压，20kV/µs的抗瞬变能力。对于每个隔离芯片，典型的逻辑输出灌电流10mA。与光耦不同的是，IsoLoop隔离芯片随时间的推移性能不会退化并且具有无限的使用寿命。
