Overview
The ADM561JRZ-REEL, produced by Analog Devices Inc., is an ultralow power RS-232 transceiver designed for use in notebook PCs and other power-sensitive applications. This device is part of the ADM560/ADM561 family, which operates from a single +3.3 V power supply, eliminating the need for dual ±5 V power supplies. It integrates step-up voltage converters and level shifting transmitters and receivers onto the same chip, utilizing CMOS technology to minimize power dissipation.
Key Specifications
| Parameter | Description |
|---|---|
| Type | Transceiver |
| Protocol | RS-232 |
| Number of Drivers/Receivers | 4/5 |
| Duplex | Full |
| Receiver Hysteresis | 300 mV |
| Data Rate | 116 kbps |
| Voltage - Supply | 3 V to 3.6 V |
| Operating Temperature | 0°C to 70°C |
| Mounting Type | Surface Mount |
| Package | 28-SOIC (0.295", 7.50mm Width) |
Key Features
- RS-232 compatible
- Operates with a single +3.3 V power supply
- Ultralow power CMOS: 1.3 mA operation
- Low power shutdown: 0.2 μA
- Suitable for serial port mice and other low-power applications
- Internal voltage doubler and voltage inverter generating ±6.6 V from the +3.3 V input
- Requires four external 1 μF capacitors for internal voltage converters
- Active low shutdown and active high receiver enable signal (ADM560)
- Two receivers remain active in shutdown mode for peripheral monitoring
Applications
- Notebook PCs and other portable devices
- Serial port mice and other peripheral devices
- Battery-powered and power-sensitive applications
- Industrial automation and control systems
- Medical devices requiring low power consumption
Q & A
- What is the primary function of the ADM561JRZ-REEL?
The ADM561JRZ-REEL is an RS-232 transceiver that provides four drivers and five receivers, designed to meet the EIA-232 standard.
- What is the power supply requirement for the ADM561JRZ-REEL?
The device operates from a single +3.3 V power supply.
- What is the data rate capability of the ADM561JRZ-REEL?
The device supports a data rate of up to 116 kbps.
- What is the operating temperature range of the ADM561JRZ-REEL?
The operating temperature range is from 0°C to 70°C.
- What package type is the ADM561JRZ-REEL available in?
The device is available in a 28-SOIC package.
- How does the ADM561JRZ-REEL manage to generate the required RS-232 voltage levels?
The device uses an internal voltage doubler and voltage inverter to generate ±6.6 V from the +3.3 V input.
- What are the power consumption characteristics of the ADM561JRZ-REEL?
The device consumes 1.3 mA in normal operation and 0.2 μA in low power shutdown mode.
- Are there any specific capacitors required for the ADM561JRZ-REEL?
Yes, four external 1 μF capacitors are required for the internal voltage converters.
- What is the significance of the shutdown mode in the ADM561JRZ-REEL?
In shutdown mode, the power consumption is significantly reduced, and two receivers remain active to monitor peripheral devices.
- Is the ADM561JRZ-REEL suitable for battery-powered devices?
Yes, the device is highly suitable for battery-powered and other power-sensitive applications due to its ultralow power consumption.
