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New Sunk Mounting IrDA-Compatible Transceiver Enables Slimmer IR-Enabled Palmtops, PDAs, and Digital Cameras
MALVERN, PENNSYLVANIA - February 22, 2000 - The industry's first IrDA-compatible infrared transceiver in a sunk mounting package that can be affixed to the edge of a printed circuit board was released today by Vishay Intertechnology, Inc. With a 115.2 kbit/s maximum data rate, the new Vishay Telefunken TFDS4400 is offered in a notched surface-mount "Dracula" package measuring just 13 mm x 7.5 mm. Its height profile of just 1.8 mm over the pcb is a record for any infrared data communications transceiver and will dramatically enhance the ability of designers to slenderize IR-enabled palmtops and other mobile systems while providing IR connectivity at distances up to 1 meter.
"An IrDA transceiver that reaches just 1.8 mm over the pc board edge can make a real difference in the thickness of an IR-enabled PDA or palmtop," said Jan Nilsson, North American Director of Marketing at Vishay Intertechnology. "Doing this affordably, and with low power consumption, is the genius of the Dracula package and of the TFDS4400."
Integrated TFDS4400 components include a photo pin diode, a high-power emitter, and the low-power analog circuitry necessary for an optimized IrDA implementation. By integrating the preamplifier of the receiver and the driver stage of the transmitter, the TFDS4400 combines the functions of two ICs and eliminate a large number of external resistors and capacitors. Unlike many IrDA-compatible transceivers, the TFDS4400 requires no additional metal shielding to create a complete, surface-mount solution. Internal AGC circuitry ensures maximum sensitivity, even with a high level of optical interference.
Designed for power efficiency, the TFDS4400 operates from 2.7-V to 5.5-V supply voltages and consumes just 1 mA in 3-V systems. A power sleep mode through VCC1 reduces power consumption to just 5 nA when IR connectivity is not in use.
The TFDS4400 interfaces directly with various super I/O and IrDA controller devices or can be used with Vishay Telefunken TOIM3000 and TOIM3232 interface ICs, which provide the logic for encoding/decoding, as well as baud rate agility for external IrDA adapters. The TOIM3000 provides a direct interface between the TFDS4400 and a 16450 or 16550 UART, while the TOIM3232 allows a direct interface between the transceiver and an RS232 serial port for external plug-in applications.
The TFDS4400 will enable infrared connectivity among and between a wide range of electronic systems, including notebook computers, desktop PCs, palmtops, PDAs, digital still and video cameras, printers, fax machines, photocopiers, and computer projection systems.
Samples and production quantities of the TFDS4400 are available now. Production quantities will be available in December 1999 with lead times of 8 to 10 weeks for larger orders.
Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers
of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors,
and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial,
computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product
innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can
be found on the Internet at www.vishay.com.