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Volume 8, Issue 10 | YOUR SEMICONDUCTOR SOLUTIONS RESOURCE |
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C o n t e n t s PulSAR ADC Delivers Breakthrough Performance >> DAC Enables Actuation and Communications in a Single Step >> SAR ADC Simplifies Motor Control >> Σ-Δ ADC for Faster Measurement >> Microcontrollers Deliver Unequaled Data Acquisition >> Amp with Overvoltage Protection >> PGIAs Ideal for Data Acquisition >> IMU Sensor for Motion Sensing >> Narrow-Band Communications >> RF Front End for RFID and Unlicensed UHF ISM >> Blackfin Processors for Precision Measurement . >> Digipots for Precision Calibration >> Digital Isolation Products Deliver 500 mW Isolated Power >> RRIO Amp for Portable Systems >> ±15 V Switches and Multiplexers Systems >> In-Amp Optimizes Precision Front Ends >> Low Power, High Voltage Op Amp >> Multivoltage Supervisory Solutions >> Power Distribution Solutions >> RS-232 and RS-485 Digitally Isolated ICs >> Voltage/Current Output Drivers >>
All prices in this bulletin are in USD in quantities greater than 1000 (unless otherwise noted), recommended lowest grade resale, FOB U.S.A.
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Protect Your Valuable Communication Networks with ADI's Family of RS-232 and RS-485 Digitally Isolated ICs
The RS-485 and RS-232 bus standards are the most widely used physical layer bus designs in industrial and instrumentation applications. To improve system reliability within a noisy environment and protect against voltage spikes and ground loops, isolation is required between the RS-485/RS-232 cable network and the systems connected to it. Power isolation is obtained through the use of an isolated dc-to-dc power supply or ADI isoPower integrated dc-to-dc converters. Signal isolation is implemented using iCoupler technology. ADI provides integrated isolated RS-485 and RS-232 transceivers to solve these problems. The ADM3251E transceiver incorporates ADI's iCoupler and isoPower isolation technologies and is the first surface-mount RS-232 transceiver to feature full isolation of both the data lines and power. With a 2.5 kV isolation rating, the new RS-232 transceiver complies with industry-standard isolation regulations (UL1577 and DIN VDE 0884-10), ensuring it will meet the robustness levels required in noisy operating environments such as isolated RS-232 diagnostic data ports in industrial automation and control applications. The SMT package reduces board space by 45% compared with traditional ICs and helps to accelerate the manufacturing process and lower system development costs.
ADM3251E Features
500 kbps/16 Mbps, Signal Isolated RS-485 Transceivers with Integrated Transformer Driver The ADM2487E and ADM2482E meet the isolation requirements of RS-485 based physical layer industrial fieldbus networks, such as Modbus and BACnet. These products offer designers a higher level of integration than competing discrete solutions, resulting in a savings of board space and accelerated design time. These devices employ ADI's iCoupler technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. An on-chip oscillator outputs a pair of square waveforms that drive an external transformer to provide isolated power with an external transformer. Visit www.analog.com/rs485 and www.analog.com/rs232 for more information. Please click here for the RS-485 Transceivers selection table.
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