Overview
The ADM202EARW-REEL, produced by Analog Devices Inc., is a 2-channel RS-232 line driver/receiver pair designed to operate from a single 5 V power supply. This device is part of the ADM202 series and is known for its high efficiency and robust performance. It integrates step-up voltage converters and level shifting transmitters and receivers on the same chip, making it an ideal solution for various serial communication applications. The ADM202EARW-REEL meets or exceeds the TIA/EIA-232-E and V.28 specifications, ensuring reliable and high-speed data transmission.
Key Specifications
| Parameter | Rating/Value |
|---|---|
| Power Supply | 5 V ± 10% |
| RS-232 Output Levels | ±10 V |
| Baud Rate | Up to 120 kB |
| Output Resistance | 300 Ω |
| Short-Circuit Current | ±60 mA |
| Input Voltage Range | −0.3 V to (VCC + 0.3 V) |
| Output Voltage Range | (V+ + 0.3 V) to (V− − 0.3 V) |
| ESD Protection | Greater than 2 kV |
| Package Types | 16-lead PDIP, 16-lead SOIC (narrow and wide) |
| Power Dissipation | 10 mW |
Key Features
- Highly efficient on-chip charge pump design allowing for small external capacitors (as small as 0.1 µF).
- Fast driver slew rates enabling operation up to 120 kB.
- High drive currents for extended cable lengths.
- Epitaxial BiCMOS construction minimizing power consumption.
- Overvoltage protection for receiver inputs up to ±30 V.
- ESD protection greater than 2 kV on all pins.
- Compliance with TIA/EIA-232-E and V.28 specifications.
Applications
The ADM202EARW-REEL is suitable for a variety of applications requiring reliable RS-232 serial communication. These include:
- Industrial automation and control systems.
- Point-of-sale terminals and other retail equipment.
- Medical devices requiring serial communication.
- Automotive systems needing robust serial interfaces.
- General-purpose serial communication in embedded systems.
Q & A
- What is the power supply requirement for the ADM202EARW-REEL?
The device operates from a single 5 V power supply ± 10%. - What are the RS-232 output levels generated by the ADM202EARW-REEL?
The device generates ±10 V RS-232 output levels. - What is the maximum baud rate supported by the ADM202EARW-REEL?
The device supports baud rates up to 120 kB. - What kind of ESD protection does the ADM202EARW-REEL have?
The device has ESD protection greater than 2 kV on all pins. - What types of packages are available for the ADM202EARW-REEL?
The device is available in 16-lead PDIP and both narrow and wide 16-lead SOIC packages. - Does the ADM202EARW-REEL meet any specific industry standards?
Yes, it meets or exceeds the TIA/EIA-232-E and V.28 specifications. - What is the power dissipation of the ADM202EARW-REEL?
The power dissipation is 10 mW. - Can the ADM202EARW-REEL handle overvoltage on the receiver inputs?
Yes, the receiver inputs can withstand continuous voltages in excess of ±30 V. - What is the purpose of the on-chip charge pump in the ADM202EARW-REEL?
The on-chip charge pump generates the necessary ±10 V RS-232 levels from the 5 V power supply. - Are there any specific capacitors required for the ADM202EARW-REEL?
Yes, external 0.1 µF capacitors are required for the internal voltage converter.
