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Optoelectronics/Displays??

Tiny IR receivers come in 3 versions

Posted: 26 Jan 2009 ?? ?Print Version ?Bookmark and Share

Keywords:IR receiver? LCD? optoelectronics?

TSOP75xxx series

Vishay Intertechnology has expanded up its optoelectronics portfolio with a new series of ultra-miniature SMD IR receivers for remote control systems. With a typical irradiance of 0.15mW/sqm, an ultralow supply current of 0.35mA typical at 3.3V, and a tiny 3mm profile in side view, the TSOP75xxx series devices offer what it claims to be the best sensitivity-to-size ratio.

Based on two-lens concept, the TSOP75xxx series utilizes two photodiodes to completely offset the loss of light-gathering capability, which occurs when a lens is shrunk to a smaller size. This design makes it possible to shrink the IR receivers up to 66 percent by volume compared to other SMD devices, while at the same time increasing the sensitivity and offering a wide receiving angle.

The devices are offered in three AGC versions. The TSOP752xx is compatible with all common IR remote control data formats. The TSOP753xx and TSOP754xx suppress almost all spurious pulses from energy-saving fluorescent lamps, including dimmed LCD backlighting, and are compatible with short-burst or long-burst codes, respectively.

To further simplify designs, the receivers offer two photo detectors and a preamplifier in one package, with two epoxy lenses designed as an IR filter. The filter features a frequency range optimized for reducing emissions from plasma displays. Compatible with top or side view use, the devices are insensitive to supply voltage and ripple noise and offer an improved immunity against ambient light.

The TSOP75xxx series was designed to fulfill the needs of current and future consumer and laptop designs, where small space and re-flow solder technology are required. The devices are optimized for remote control and data transmission applications in small handheld electronics, such as notebook computers, digicams, and portable music and video players, as well as STBs, thin LCD TVs, game controllers, navigation systems and USB TV.

In addition, the receivers offer a supply voltage range of 2.5V to 5.5V and operate over a carrier frequency of 30kHz to 56kHz. All devices are in accordance with RoHS 2002/95/EC and WEEE 2002/96/EC.

Samples and production quantities of the TSOP75xxx receivers are available now, with lead times of six weeks for large orders.





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