Isolated RS-232

Isolated RS-232

Analog Devices Inc. (ADI)

Analog Devices offers a wide range of RS-232 transceivers to suit many applications. As RS-232 cable networks and the systems to them can be vulnerable to voltage spikes and ground loops, we have developed a number of innovations that protect against these issues and create an isolated RS-232 environment. We accomplish this through our isoPower® integrated dc-to-dc converters, as well as our iCoupler® technology, which enable the power isolation and signal isolation required for system reliability in a noisy environment.

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Interface and Isolation

Analog Devices Inc.

Analog Devices offers a wide range of digital interface and digital isolators with iCoupler® technology covering the industry’s field bus and peripheral communications standards. Digital isolators, isolated transceivers, isolated A/D converters and isolated gate drivers utilize the award winning iCoupler® and isoPower® technologies for isolation solutions without many of the constraints found in optocouplers. Find design solutions for interface devices including keypad controllers, level translators, and high voltage protection products (channel protection, fault protection, overvoltage protection), and latch-up proof switches and multiplexers.

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4-20mA Input A/D Converters

Analog Devices Inc.

Analog Devices range of 4-20mA Input A/D Converters deliver accuracy, robustness and flexibility for Industrial Control applications. As the world’s leading supplier of data converters, Analog Devices is constantly introducing new A/D converters (ADCs) that drive system level architectures. Our portfolio of leading industrial 4-20mA Input A/D Converters offer considerable integration including, sense resistor, signal conditioning circuitry and advanced on-chip diagnostics to maximize performance and provide an integrated system level solution, all based upon robust silicon processes.

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Industrial 4-20mA Driver

Analog Devices Inc.

Analog Devices portfolio of leading industrial d/a converters and drivers addresses the challenges of enhancing system accuracy, reliability, and overall functionality while reducing form factor and power dissipation. The products provide a range of programmable output ranges from standard 4–20 mA for current loop communication to ±10 V for actuator control. They simplify industrial system design by offering considerable control functionality and advanced on-chip diagnostics to maximize system up time. ADI industrial converters also eliminate the need for costly calibration routines needed by some traditional discrete architectures.

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Isolated Controller Area Network (CAN)

Analog Devices Inc.

ADI isolated controller area network (CAN) transceivers provide the differential physical layer interface between the data layer link, hardware protocol (for example, embedded in some of ADI's Blackfin® processors), and the physical wiring of the CAN bus. ADI's portfolio includes transceivers with integrated iCoupler® and isoPower® isolation, providing, fully isolated off-the-shelf CAN PHY's.

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Non-Isolated Controller Area Network (CAN)

Analog Devices Inc.

ADI nonisolated controller area network (CAN) transceivers provide the differential physical layer interface between the data layer link, hardware protocol (for example, embedded in some of ADI's Blackfin® processors), and the physical wiring of the CAN bus. ADI's portfolio includes transceivers with integrated iCoupler® and isoPower® isolation, providing, fully isolated off-the-shelf CAN PHY's.

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µModule Isolated Transceivers

Analog Devices Inc.

Analog Devices µModule (micromodule) isolated transceivers provide robust galvanic isolation for digital serial communication interfaces, including SPI, I2C, RS-485/RS-422, RS-232, and USB. Isolation barriers are implemented using Ethernet transformers, coupling capacitors, or embedded inductors. All devices are simple to configure, have very low EMI susceptibility and emissions, and feature high noise immunity to preserve signal integrity.

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I2C Isolators

Analog Devices Inc.

Analog Devices’ family of isolated I2C isolators support a complete isolated I2C interface. This portfolio is based on our iCoupler® chip scale transformer technology. iCoupler is a magnetic isolation technology with functional, performance, size, and power consumption advantages compared to optocouplers. By integrating iCoupler channels with semiconductor circuitry, our technology enables a complete, isolated I2C interface with a small form factor. Our I2C isolators covers applications such as central office switching, networking, and power over Ethernet.

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Isolated Gate Drivers

Analog Devices Inc.

Analog Devices’ isolated gate driver portfolio offers designers performance and reliability advantages over designs utilizing optocouplers or pulse transformers. Utilizing ADI’s proven iCoupler® technology, the isolated gate driver family offers the advantage of a maximum propagation delay of 50 ns, less than 5 ns channel-to-channel matching, a 50-year lifetime for 400 V rms working voltage and galvanic isolation in a single package.

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Isolated LVDS

Analog Devices Inc.

Isolated LVDS (low voltage differential signaling) devices couple differential signals applied to the LVDS receiver inputs across the isolation barrier to the outputs on the other side and re-transmits the bit stream or clock as LVDS. Analog Devices' drop-in LVDS isolators offer designers robust, high speed differential signaling for point-to-point and multidrop applications. Extending iCoupler® chip scale transformer technology for ultrahigh speed data encoding, these LVDS isolators support a a data rate of up to 2.5 Gigabits per channel for a total bandwidth of 10 Gbps. In contrast to expensive fiber implementations, deserialized links over standard digital isolators or optocouplers, and design-intensive bespoke solutions using transformers or high voltage capacitors, ADI Gigabit Digital LVDS isolators offer the only integrated comprehensive, high performance isolation at 10 Gbps. High performance galvanic isolation for applications include analog front-end (AFE), processor to processor serial communication, or video and imaging data (such as HDMI isolators) as well as isolation between boards, or at a cable interface for LVDS or CML signal chains.

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Isolated RS-485

Analog Devices Inc.

Analog Devices offers a wide range of standard RS-485/RS-422 transceivers and iCoupler® isolated RS-485/RS-422 transceivers to suit many applications. The RS-485 specification meets the requirements for a truly multipoint communications network, and the standard specifies up to 32 drivers and 32 receivers on a single (2-wire) bus. Some RS-485 transceivers modify the input impedance to allow up to 8× more nodes to be connected to the same bus.

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isoPower

Analog Devices Inc.

Analog Devices isoPower® technology utilizes proprietary iCoupler® chip scale transformers to integrate isolated dc-to-dc converts with data isolation into a single package. This enables designers to implement isolation in designs without the cost, size, power, performance, and reliability constraints found with optocouplers. With more than one billion channels shipped into the field, these magnetically isolated products are a safe, reliable and easy-to-use alternative to optocouplers.

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SPI Isolators

Analog Devices Inc.

SPI (Serial peripheral interface) is one of the most widely used interfaces between microcontrollers and peripheral ICs such as sensors, ADCs, DACs, shift registers, SRAM, and others. Analog Devices has your isolated SPI bus covered with our dedicated SPI digital isolators which support this synchronous, full duplex master-slave-based interface. Options include devices built with ADI's proven iCoupler® technology and offering a small footprint, simple design-in, fast speeds, and high data integrity, as well as integrated µModules which require no external components. Our SPI isolator solutions increase performance and reduce board space. This simple, compact solution is ideal for isolated SPI data requiring communication across different ground potentials or through large common mode transients often found in Industrial PLCs (programmable logic controllers) and Instrumentation and data acquisition systems.

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Standard Digital Isolators

Analog Devices Inc.

Analog Devices’ digital isolators enable designers to implement robust solutions with our magnetically isolated iCoupler products with the flexibility of up to 6 channels. Products meet stringent safety standards including the ability to isolate IS-IS with our intrinsically safe certified digital isolators which enable designs in hazardous areas. And automotive certified versions are also available. Utilizing the iCoupler® and isoPower® technologies, these isolation solutions enable designs without the constraints found in optocouplers.

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USB Isolators

Analog Devices Inc.

USB isolators protect the communication interface between the host, such as a PC, and its peripheral. Utilizing iCoupler® digital isolation technology, Analog Devices offers USB 2.0 compliant SOIC components with data rates up to 12 Mbps that provide EMC protection and safety isolation, reduce design size and time, and lower system cost. Galvanically isolated USB μModule® (micromodule) transceivers integrate the USB interface with an isolated dc-to-dc converter for up to 2.5 W of isolated power and provide ±15 kV ESD. Whether for host, hub, bus splitter, or peripheral device, these transparent USB digital isolators are easy to use—they just work—all while meeting the demanding standards required for medical and industrial applications.

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IO-Link

Analog Devices Inc.

The IO-Link® interface simplifies communication to smart sensors and actuators, combining signaling with power-over-cable technology. It has become one of the key devices as industrial automation systems are growing more interconnected and intelligent to accommodate demands for centralized control and optimized production. Analog Devices implements both device PHY and master PHY interfaces (COM1/COM2/COM3). Designing with harsh industrial environments in mind, the master 4-port IO-Link power and communications interface, as well as the IO-Link transceivers featuring Integrated Step-Down Regulators and LDO with ±60V cable interface protection provide the required ruggedness. Optimum EMC performance is achieved with adjustable current limit and slew rate transmitters. Automatic wake-up request (WURQ) generation and an output supply current boosting capability for device startup are also available. Additional components integrate a 300 mA step-down (buck) regulator and a 150 mA LDO to supply all the power required for internal electronics in an connected sensor or actuator.

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IOS Subsystems

Analog Devices Inc.

Analog Devices has been the leader in isolated signal conditioning for more than 20 years. ADI IOS products feature complete modular solutions for industrial signal conditioning. These products are the benchmark for isolated signal conditioners, with price and performance unmatched in the industry.

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LVDS (Low Voltage Differential Signaling) Drivers and Receivers

Analog Devices Inc.

LVDS (Low Voltage Differential Signaling) Drivers and Receivers from Analog Devices offers designers robust, high speed signaling for single-ended to differential solutions for point-to-point applications. Our selection of products conform to the TIA/EIA-644 LVDS standard and contain the first LVDS transceivers to meet 8 kV IEC ESD performance standards - important for robust, interboard applications where the connectors can be exposed to more harsh electrostatic environments. Companion differential line receivers and differential line drivers support up to 600Mbps. LVDS greatly improves noise immunity and minimizes emissions for high speed point-to-point data transmission and is a low power alternative to emitter-coupled logic (ECL) or positive emitter-coupled logic (PECL) signaling.

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M-LVDS (Multi-Point Low Voltage Differential Signaling)

Analog Devices Inc.

M-LVDS (multipoint low voltage differential signaling) is a multipoint high speed differential electrical interface with support for up to 32 nodes. Analog Devices M-LVDS products offer the industry’s highest ESD performance transceivers with high noise immunity receivers and extended common-mode range. These products are ideal for applications where designers need to transmit at data rates up to 100 Mbps or 250 Mbps to multiple nodes.

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Multiprotocol Transceivers

Analog Devices Inc.

Analog Devices’ RS-232/RS-485 multiprotocol transceivers are the only parts in the market that allow protocol switching and allow for switching between half-/full-duplex operation and switching on/off termination resistors, both of which minimize physical user intervention when reconfiguring networks. Features include 3.3 V to 5 V operation, up to ±26 kV ESD, a logic supply pin, and small LFCSP packages. As large-scale computing applications typically require more protocols than the RS-232 and RS-485 protocols found in everyday applications, we support legacy protocols. These include V.28 (RS-232), V.35, RS-449, RS-530, RS-530-A, V.36, or X.21. Software-selectable protocol, cable termination, and data terminal equipment (DTE) or data communications equipment (DCE) configurations all provide convenient flexibility.

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RS-485 and RS-422 Transceivers

Analog Devices Inc.

The RS-485 specification meets the requirements for a truly multipoint communications network, and the standard specifies up to 32 drivers and 32 receivers on a single (2-wire) bus. Some RS-485 transceivers modify the input impedance to allow up to 8× more nodes to be connected to the same bus. Analog Devices offers a wide range of standard RS-485/RS-422 transceivers and iCoupler® isolated RS-485/RS-422 transceivers to suit many applications.

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Serial Bus Buffers, Extenders, and Accelerators

Analog Devices Inc.

The Analog Devices family of I2C solutions support hot swappable, 2-wire bidirectional bus buffers to allow I/O card insertion into a live backplane without corruption of the data and clock busses. Additional supported 2-wire buses include SMBus, PMBus, the ATCA intelligent platform management bus (IPMB), and the HDMI DDC bus. I2C/SMBus Accelerators improve bus transitions to allows multiple device connections or a longer, more capacitive interconnect, without compromising slew rates or bus performance. ADI's software-programmable and pin-selectable I2C multiplexers help resolve I2C address limitations, increase fan-in or fan-out, and integrate bus buffers and rise time accelerators for an all-in-one solution. Resistor configurable I2C address translators can be configured with over 100 unique slave addresses to allow multiple slave devices with the same address to coexist on the same bus.

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SIM Interface

Analog Devices Inc.

Analog Devices’ line of SIM interface parts provide power conversion and level shifting for GSM SIM modules and smart cards.

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