Overview
The ADM202EARU-REEL, produced by Analog Devices Inc., is a robust and high-speed 2-channel RS-232/V.28 interface device. This component is designed to operate from a single 5 V power supply, making it highly efficient and suitable for various applications. The ADM202EARU-REEL integrates step-up voltage converters and level-shifting transmitters and receivers, enabling it to meet the TIA/EIA-232-E and V.28 specifications. It features a highly efficient on-chip charge pump design that generates ±10 V RS-232 output levels using small external capacitors as small as 0.1 µF.
Key Specifications
| Parameter | Rating/Value |
|---|---|
| VCC | 5 V ± 10% |
| Maximum Data Rate | 230 kbps |
| Receiver Propagation Delay | 0.1 µs to 1 µs |
| Transmitter Propagation Delay | 1.0 µs to 1.5 µs |
| Transition Region Slew Rate | 3 V/µs to 8 V/µs |
| ESD Protection (I/O Pins) | ±15 kV (Human body model), ±8 kV (IEC1000-4-2 contact discharge) |
| EFT Protection (I/O Pins) | ±2 kV (IEC1000-4-4) |
| Input Voltages (T1IN, T2IN) | −0.3 V to (VCC + 0.3 V) |
| Input Voltages (R1IN, R2IN) | ±30 V |
| Output Voltages (T1OUT, T2OUT) | ((V+) + 0.3 V) to ((V−) − 0.3 V) |
| Power Dissipation | 10 mW (typical), 470 mW (maximum for 16-Lead PDIP) |
Key Features
- Operates from a single 5 V power supply with an on-chip charge pump generating ±10 V RS-232 output levels.
- High-speed operation with data rates up to 230 kbps.
- Compliant with TIA/EIA-232-E and V.28 specifications.
- Low power consumption of 10 mW (typical).
- ESD protection in excess of ±15 kV on all I/O lines.
- Fast transient/burst immunity (IEC1000-4-4) and radiated immunity (IEC1000-4-3).
- Low EMI emissions (EN55022).
- Available in 16-lead PDIP, narrow and wide 16-lead SOIC, and TSSOP packages.
Applications
- General-purpose RS-232 data links.
- Portable instruments.
- PDAs and other handheld devices.
- Operation in harsh electrical environments where high levels of ESD and electrical fast transients are present.
Q & A
- What is the power supply requirement for the ADM202EARU-REEL?
The ADM202EARU-REEL operates from a single 5 V power supply.
- What are the maximum data rates supported by the ADM202EARU-REEL?
The device supports data rates up to 230 kbps.
- Does the ADM202EARU-REEL meet any specific industry standards?
Yes, it meets or exceeds the TIA/EIA-232-E and V.28 specifications.
- What kind of ESD protection does the ADM202EARU-REEL offer?
The device offers ESD protection in excess of ±15 kV on all I/O lines.
- What are the typical power consumption and maximum power dissipation of the ADM202EARU-REEL?
The typical power consumption is 10 mW, and the maximum power dissipation is 470 mW for the 16-Lead PDIP package).
- In what packages is the ADM202EARU-REEL available?
The device is available in 16-lead PDIP, narrow and wide 16-lead SOIC, and TSSOP packages).
- What are some common applications for the ADM202EARU-REEL?
Common applications include general-purpose RS-232 data links, portable instruments, PDAs, and operation in harsh electrical environments).
- Does the ADM202EARU-REEL have any special features for electromagnetic compatibility?
Yes, it has low EMI emissions (EN55022) and is compliant with the EU directive on EMC (89/336/EEC)).
- What is the slew rate of the transmitter outputs?
The slew rate of the transmitter outputs is between 3 V/µs and 8 V/µs).
- How does the ADM202EARU-REEL handle overvoltage protection?
The device provides overvoltage protection, allowing the receiver inputs to withstand continuous voltages in excess of ±30 V).
