Overview
The ADM3222ARW-REEL, produced by Analog Devices Inc., is a high-speed, dual-channel RS-232/V.28 interface transceiver. This component is designed to operate from a single 3.3 V power supply, making it ideal for battery-powered portable instruments and other low-power applications. The ADM3222 features advanced power management with shutdown and enable capabilities, ensuring minimal power consumption when not in use.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 3 V to 5.5 V | V |
| Data Rate | Up to 460 kbps | kbps |
| Number of Drivers/Receivers | 2/2 | |
| Package Type | 18-SOIC | |
| Operating Temperature | -40°C to 85°C | °C |
| Receiver Hysteresis | 400 mV | mV |
| Transmitter Propagation Delay | 0.3 to 1.2 μs | μs |
| Receiver Propagation Delay | 0.4 to 1 μs | μs |
| Shutdown Current | < 0.5 μA | μA |
Key Features
- Low Power Consumption: The ADM3222 features low power consumption and a shutdown facility, making it suitable for battery-powered devices.
- High Data Rate: Supports data rates up to 460 kbps, meeting the requirements for high-speed data links and ISDN modem standards.
- Single Supply Operation: Operates from a single 3.3 V supply, using a charge pump voltage converter to generate the necessary RS-232 voltage levels.
- Enable and Shutdown Circuitry: Includes enable and shutdown inputs to control the receiver outputs and power down the device, respectively.
- Schmitt-Trigger Inputs: Receivers have Schmitt-trigger inputs with a hysteresis level of 0.4 V, ensuring error-free reception of noisy or slow-transition inputs.
- Protection Features: Protected against overvoltages up to ±30 V and includes internal 5 kΩ pull-down resistors on receiver inputs.
Applications
- Portable Instruments: Ideal for battery-powered portable instruments due to its low power consumption and shutdown facility.
- ISDN Modems: Suitable for ISDN modem standards that require high data rates.
- Industrial Automation: Used in industrial automation systems where reliable and high-speed serial communication is necessary.
- Embedded Systems: Commonly used in embedded systems requiring RS-232 communication interfaces.
Q & A
- What is the maximum data rate supported by the ADM3222?
The ADM3222 supports data rates up to 460 kbps.
- What is the operating voltage range of the ADM3222?
The ADM3222 operates from a single supply voltage of 3 V to 5.5 V.
- What type of package is the ADM3222ARW-REEL available in?
The ADM3222ARW-REEL is available in an 18-SOIC package.
- How does the shutdown feature work on the ADM3222?
The shutdown feature reduces the quiescent current to less than 0.5 μA when the SD input is set low, while the receivers remain enabled unless disabled using the EN input.
- What is the purpose of the charge pump voltage converter in the ADM3222?
The charge pump voltage converter generates the necessary RS-232 voltage levels from a single 3.3 V supply.
- What is the hysteresis level of the Schmitt-trigger inputs on the receivers?
The hysteresis level of the Schmitt-trigger inputs on the receivers is 0.4 V.
- Is the ADM3222 protected against overvoltages?
- What is the typical propagation delay for the transmitter and receiver?
The typical propagation delay for the transmitter is 0.3 to 1.2 μs, and for the receiver, it is 0.4 to 1 μs.
- Can the ADM3222 be used in industrial automation systems?
- Is the ADM3222 RoHS compliant?
