Overview
The ADM202JN, produced by Analog Devices Inc., is a high-speed, 2-channel RS-232 line driver/receiver pair designed to operate from a single 5 V power supply. This integrated circuit is optimized for efficient operation, meeting or exceeding 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 0.1 µF charge pump capacitors. The ADM202JN is constructed using epitaxial BiCMOS technology, which minimizes power consumption and provides robust protection against overvoltage and ESD.
Key Specifications
| Parameter | Value |
|---|---|
| Power Supply | 5 V ± 10% |
| Transmission Rate | Up to 120 kB/s |
| Charge Pump Capacitors | 0.1 µF |
| RS-232 Output Levels | ±10 V |
| Receiver Input Levels | ±3 V to ±30 V |
| Transmitter Input Levels | TTL/CMOS compatible |
| Power Consumption | 10 mW |
| Operating Temperature | 0°C to +70°C |
| Package Types | 16-lead PDIP, 16-lead SOIC (narrow and wide) |
| ESD Protection | Greater than 2 kV |
Key Features
- Highly efficient on-chip charge pump design for generating ±10 V RS-232 levels from a single 5 V supply.
- Small 0.1 µF charge pump capacitors required.
- Fast driver slew rates supporting up to 120 kB operation.
- High drive currents for extended cable lengths.
- Low power consumption of 10 mW.
- Overvoltage protection allowing receiver inputs to withstand continuous voltages in excess of ±30 V.
- ESD protection greater than 2 kV on all pins.
- Epitaxial BiCMOS construction to minimize power consumption and prevent latch-up.
Applications
- Industrial control systems.
- Point-of-sale terminals.
- Medical equipment.
- Automotive systems.
- Remote data acquisition systems.
- Any application requiring RS-232 communication over extended cable lengths.
Q & A
- What is the power supply requirement for the ADM202JN?
The ADM202JN operates from a single 5 V power supply ± 10%. - What is the maximum transmission rate supported by the ADM202JN?
The ADM202JN supports transmission rates up to 120 kB/s. - What are the RS-232 output levels generated by the ADM202JN?
The ADM202JN generates ±10 V RS-232 output levels. - What type of capacitors are required for the charge pump in the ADM202JN?
The charge pump requires small 0.1 µF capacitors. - Does the ADM202JN have overvoltage protection?
Yes, the receiver inputs can withstand continuous voltages in excess of ±30 V. - What is the power consumption of the ADM202JN?
The power consumption is 10 mW. - What types of packages are available for the ADM202JN?
The ADM202JN is available in 16-lead PDIP and both narrow and wide 16-lead SOIC packages. - Does the ADM202JN have ESD protection?
Yes, all pins have ESD protection greater than 2 kV. - What is the operating temperature range for the ADM202JN?
The operating temperature range is 0°C to +70°C. - Is the ADM202JN compliant with RS-232 standards?
Yes, it meets or exceeds the TIA/EIA-232-E and V.28 specifications.
