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.
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.
- 2.5 kV fully isolated (power and data) RS-232 transceiver
- 1 Tx and 1 Rx
- Isolation: 2.5 kV
- Integrated isolated dc-to-dc converter
- Meets EIA-232E specifications
- Charge pump capacitors: 0.1 µF
- ESD protection on RIN and TOUT pins
- Contact discharge: ±8 kV
- Air gap discharge: ±15 kV
- High common-mode transient immunity: >25 kV/µs
- Data rate: 460 kbps
- Safety and regulatory approvals
- UL recognition
- VDE certificate of conformity
- Package: 20-lead W_SOIC
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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