IrDA Transceiver Modules

IrDA transceiver modules are core electronic components for short-range wireless infrared communication. They adhere to the IrDA international standard and are widely used for data transmission and connectivity between devices.

 

1. What are the Technical Features of IrDA Transceiver Modules?

1) Working Principle

Transmitter: An infrared LED converts electrical signals into modulated infrared light signals in the 850nm-950nm band. The transmission range is typically less than 1 meter, requiring line-of-sight communication.

 

Receiver: A photodiode receives the optical signal and converts it into an electrical signal, which is then amplified, filtered, and decoded to restore the data.

 

Communication Mode: Half-duplex communication is supported, requiring devices to alternate between transmitting and receiving to avoid signal interference.

 

2) Protocol Stack Structure

The layered design includes the physical layer (PHY), data link layer (SLIP/PPP), and network layer (IP/IPX), ensuring cross-device compatibility.

 

The physical layer adopts the IrPHY standard, with a typical data rate of 115.2kbps (SIR mode).

 

3) Core Advantages

Low Cost: Simple hardware structure, eliminating the need for complex RF circuitry.

 

Security: Directional transmission (angle ≤ 30°) reduces the risk of data interception.

 

Low Power Consumption: Standby current can be as low as 75μA, making it suitable for portable devices.

 

2. What are the Typical Application Scenarios of IrDA Transceiver Modules?

Industrial Equipment: Wireless connectivity for peripherals such as printers and scanners.

 

Consumer Electronics: File transfer and synchronization for early mobile phones and PDAs.

 

IoT Nodes: Short-range sensor data collection (such as temperature and humidity monitoring).

 

3. Key Selection Parameters of IrDA Transceiver Modules

Parameter

Typical Value/Range

Description

Operating Voltage

2.4V–3.6V

Low-power design compatible with battery power

Communication Range

≤1m

Limited by the linear propagation characteristics of infrared

Data Rate

115.2kbps（SIR）

Supports the standard IrDA protocol

Package Dimensions

6.8mm×2.8mm×1.6mm

Suitable for high-density PCB layouts

 

IrDA transceiver modules, with their standardized protocol and low cost, remain competitive in specific short-range communication scenarios, particularly those requiring security and cost-consciousness without complex networking.