Intersil has introduced four new triple analogue delay lines for video signals that reportedly provide images for keyboard-video-mouse (KVM) applications or any video carried over long distances of twisted-pair cable.
The ISL59920, ISL59921, ISL59922, and ISL59923 are triple analogue delay lines that are said to provide skew compensation between three high-speed signals. According to the company, these parts are suitable for compensating for the skew introduced by a CAT-5, CAT-6 or CAT-7 cable (with differing electrical lengths on each twisted pair) when transmitting analogue video.
The company said that its triple analogue video delay lines enable users to meet different bandwidth and transmission-length requirements, using a single design product.
According to Intersil, the whole family is footprint-compatible with the company’s EL9115, a silicon delay line product. The bandwidths range from 150MHz to 230MHz, and reportedly increase the range of video resolutions that can be handled up to UXGA and 1080p.
The ISL59920 features up to 62ns of delay compensation in 2ns steps, with a bandwidth of 153 MHz. This is expected to be sufficient to compensate for the skew encountered in 1000 feet (300m) of CAT 5/6/7 cable.
The ISL59921 and ISL59922, feature 200MHz or 230MHz -3dB bandwidth respectevely and are said to be suitable for users who need higher-bandwidth products over shorter distances. The ISL59923 has bandwidth of 153MHz and with 30ns of total delay and is claimed to be suitable for shorter reach, lower resolution installations.
Using a serial interface, the new offerings are programmable in steps of 2, 1.5, 1, or 2ns for up to a total delay of 62, 46.5, 31, or 30ns on each channel. The gain of the video amplifiers can be set to x1 (0dB) or x2 (6dB) for back-termination.
