TFBS4711-TT1 Description

A compact infrared data transceiver module is the TFBS4711-TT1. IrDA® data rates of up to 115.2 kbit/s are supported (SIR). The transceiver module offers a complete front-end solution in a single package by combining a PIN photodiode, an infrared emitter (IRED), and a low-power CMOS control IC.

The system is built for the low power IrDA standard and has an increased on-axis range of up to 1 m. The RXD output pulse width is independent of the optical input pulse width and remains constant at a set pulse width, making the device ideal for conventional endecs. The tri-state output of the floating, shut-down TFBS4711-TT1 exhibits a weak pull-up. Current consumption is typically reduced to 10 nA using the shut down (SD) feature.

TFBS4711-TT1 Features

• Tri-state receiver output, floating in shutdown with a weak pull-up

• Constant RXD output pulse width (2.2 μs typical)

• Meets IrFM fast connection requirements

• Split power supply, an independent, unregulated supply for IRED anode and a well regulated supply for VCC

• Directly interfaces with various super I/O and encoder / decoder devices

• Qualified for lead (Pb)-free and Sn/Pb processing (MSL4)

• Compliant with the latest IrDA physical layer low power specification (9.6 kbit/s to 115.2 kbit/s)

• Small package (H x L x W in mm): 1.9 x 6 x 3

• Typical link distance on-axis up to 1 m

• Battery and power management features:

> Idle current -70 μA typical

> Shutdown current -10 nA typical

> Operates from 2.4 V to 5.5 V within specification over full temperature range from -30 °C to +85 °C

• Remote control - transmit distance up to 8 m

TFBS4711-TT1 Applications

• Data loggers

• External infrared adapters (dongles)

• Diagnostics systems

• Medical and industrial data collection devices

• Kiosks, POS, point and pay devices

• GPS

• Access control

• Field programming devices

• Ideal for battery operated devices

• PDAs

• Mobile phones

• Electronic wallet (IrFM)

• Notebook computers

• Digital still and video cameras

• Printers, fax machines, photocopiers, screen projectors