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Everlight Electronics has launched an IR product range designated the IRM series, designed for applications in multimedia such as TFT screens, DVD players and home theatre systems.

The M series consists of three types – M, M2 and M3 – to match different customer and application requirements.

The IRM is said to meet many requirements for the multimedia segment, such high immunity against TFT screen backlight noise, high immunity against artificial light, low current consumption, low operating voltage and compatibility to all protocols used in the market.

All three types fulfil these requirements.

The main difference between M, M2 and M3 is the protocol compatibility.

M is specially designed for high-data-rate and short-burst protocols.

It can match all fast multimedia protocols in the market that are used for STB and keyboard applications.

M2 is specially designed for protocols using normal burst length but fast repetition times.

Both M and M2 can handle continuous data transmission.

M3 is designed to support the most common IR protocols combined with high immunity against any kind of optical noise, including plasma TVs.

The main difference to previous products is the improved bandpass filter of the M series.

Due to a narrower bandwidth, the noise rejection could be improved.

This is an important factor in multimedia applications because the frequency of optical noise from TFT backlight and lamps is often very close to the carrier frequency of the IR protocol.

Additionally, the M series is equipped with enhanced AGC algorithms to further improve the TFT noise immunity.

Everlight said a further benefit of the M, M2 and M3 series is the improved output pulse stability.

All IR receivers have output pulse variations depending on transmission distance and noise.

If this variation is too big, the decoding IC will no longer be able to detect the signal correctly.

As a result, the end device (TV, STB, and so on) either does not react on the command of the remote control or in the worst case it interprets the command wrong.

Due to the improved output pulse stability of M series, this scenario can be avoided.

The M series is available in the standard DIP package with two different pin-out constellations (IRM-36xxMx pin-out Out-Gnd-Vcc, IRM-37xxMx pin-out Out-Vcc-Gnd).

Everlight Electronics

Everlight Electronics Co., Ltd. was founded in 1983 in Taiwan. Playing a critical role in the formation of the global LED industry, the company is rapidly ascending to become a leading supplier due to its dedication to certification, R&D, production, quality, marketing and global customer service.

Today, Everlight is a global company with over 6,400 employees, with bases located around the world to provide immediate service and prompt delivery to its customers. Sales offices are based in China, Hong Kong, Japan, Korea, Singapore, Malaysia, India, Germany, Sweden, U.S., and Canada and manufacturing facilities are located in China and Taiwan.

Although facing different marketing challenges from numerous worldwide Optoelectronic suppliers, Everlight Electronics’ excellent performance is convincing in the global market. In addition to having a diverse product portfolio consisting of High Power LEDs, Lamps, SMD LEDs, Lighting Modules, Digital Displays, Optocouplers and Infrared Components, Everlight Electronics’ ability to integrate both downstream and upstream development enables them to lead the market.

Everlight is one of the few global optoelectronics suppliers with complete control over its production facilities. This in-house capability enables Everlight to have full manufacturing and quality control, ensuring quick reaction to market shifts with short lead time responses.

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