Product category:
Optical Fibres, Cables and Connectors
News Release from: Avago Technologies | Subject: AFBR-1010 and AFBR-2010
Edited by the Electronicstalk Editorial
Team on 01 February 2005
Optical link extends to handle
automotive extremes
Agilent Technologies is claiming the world's first optical transmitter and receiver to offer an extended operating temperature range of -40 to +95C for use in automobile multimedia networks.
Agilent Technologies is claiming the world's first optical transmitter and receiver to offer an extended operating temperature range of -40 to +95C for use in automobile multimedia networks The devices also provide the highest optical link budget of 14.5dB, surpassing the 13dB limit of competing products, thereby increasing the distance and reliability of the communication link
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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The devices are compliant with the MOST (Media Oriented Systems Transport) specification, the automotive industry's multimedia, fibre-optic networking standard.
MOST networking technology permits car manufacturers and suppliers to easily add a host of multimedia devices such as CD players, radios, TVs, DVD players, navigation systems, cellphones, and in-car PCs as modular functions within a car.
Performance of the MOST network hinges on the ability of the optical transmitter and receiver (which transfer data to operate the infotainment systems) to function correctly at varying temperatures.
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By extending the temperature range, Agilent's devices offer better performance in hot weather and allow automobile manufacturers to place the devices almost anywhere in the car, except the engine compartment, without cooling concerns.
MOST fibre-optic networking provides the infrastructure for exchanging audio, video, data and control information between entertainment and information devices within a car without the need for bulky copper wiring harnesses.
MOST serves as the backbone technology of in-car infotainment systems.
Automobiles incorporating MOST networking were first introduced in the 2001 model year, and today more than 10 million nodes are installed in 23 car models.
The AFBR-1010 fibre-optic transmitter and AFBR-2010 receiver operate at speeds of up to 50Mbaud.
They are both supplied in low-cost, four-pin moulded packages ready for assembly into MOST-compliant, plastic fibre-optic connector receptacles.
The transmitter uses a low-current, high-efficiency 650nm LED source with integrated optics for efficient coupling into 1mm polymer optical fibre; the receiver contains a large-area PIN diode to receive this light.
Input and output data is TTL (transistor-transistor logic), compatible with MOST network interface controller ICs.
In the absence of data activity, the receiver switches to a very low power-consumption mode.
In this mode, the PIN diode senses new data activity and switches the receiver back to full operation.
Both the transmitter and receiver feature high tolerance to voltage transients, since both the LED driver and receiver IC are fabricated using a robust and automotive-proven BiCMOS process.
Sophisticated temperature compensation circuitry ensures stable operation over the extended temperature range.
Samples of the AFBR-1010 fibre-optic transmitter and AFBR-2010 receiver are available now through Agilent's direct sales channel. Request a free brochure from Avago Technologies ...
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