Overview
The ADM561JRZ from Analog Devices Inc. is a highly integrated RS-232 transceiver designed to operate with a single +3.3 V power supply. This device is part of the ADM560/ADM561 family, which features an on-board dc-to-dc converter that eliminates the need for dual ±5 V power supplies. The converter internally generates ±6.6 V from the +3.3 V input, making it ideal for power-sensitive applications such as battery-powered devices.
Key Specifications
| Specification | Value |
|---|---|
| Data Rate | 116 kbps |
| Interface | RS-232 |
| Logic Function | Receiver, Transceiver |
| Max Operating Temperature | 70 °C |
| Power Supply | Single +3.3 V to +3.6 V |
| Power Consumption | 1.3 mA (operating), 0.2 μA (shutdown) |
| ESD Protection | Yes |
| Package Type | 28-lead SOIC, 28-lead SSOP |
| Transmitter Inputs | 3 V or 5 V logic levels |
| Receiver Inputs | RS-232 signal levels, ±25 V tolerance |
Key Features
- RS-232 compatible
- Operates with 3 V or 5 V logic
- Ultralow power CMOS technology: 1.3 mA operation, 0.2 μA shutdown
- On-board dc-to-dc converter with voltage doubler and inverter
- High level of over-voltage protection and latch-up immunity
- Receiver inputs can withstand up to ±25 V levels
- Shutdown facility with active high/low receiver enable signals
- Suitable for mixed 3 V/5 V power supply systems
Applications
The ADM561JRZ is suitable for a variety of applications, including notebook PCs, serial port mice, and other battery-powered or power-sensitive devices. Its low power consumption and ability to operate with a single +3.3 V supply make it ideal for mobile and embedded systems. Additionally, it can be used in any system requiring RS-232 communication with minimal power usage.
Q & A
- What is the primary function of the ADM561JRZ?
The ADM561JRZ is an RS-232 transceiver that provides four drivers and five receivers, designed to meet the EIA-232 standard. - What power supply does the ADM561JRZ require?
The device operates with a single +3.3 V to +3.6 V power supply. - What is the maximum data rate of the ADM561JRZ?
The maximum data rate is 116 kbps. - Does the ADM561JRZ have ESD protection?
Yes, the device includes ESD protection. - What are the package types available for the ADM561JRZ?
The device is available in 28-lead SOIC and 28-lead SSOP packages. - How much power does the ADM561JRZ consume in shutdown mode?
The power consumption in shutdown mode is 0.2 μA. - Can the ADM561JRZ operate in mixed 3 V/5 V power supply systems?
Yes, the transmitter inputs can be driven from either 3 V or 5 V logic levels. - What is the maximum operating temperature of the ADM561JRZ?
The maximum operating temperature is 70 °C. - Does the ADM561JRZ have over-voltage protection?
Yes, the device features a high level of over-voltage protection and latch-up immunity. - How many external capacitors are required for the internal voltage converters?
Four external 1 μF capacitors are required.
