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RF/Microwave??

Zarlink develops front-end subsystem for STBs

Posted: 25 Mar 2004 ?? ?Print Version ?Bookmark and Share

Keywords:zarlink semiconductor? zle10532? reference design? zl10036? tuner?

Zarlink Semiconductor Inc. has introduced a production-ready blueprint for a complete front-end subsystem used in digital satellite STBs.

Combining a new satellite tuner with a demodulator, the ZLE10532 reference design meets the growing need for highly integrated RF chips in advanced digital TV products.

"Manufacturers need proven, cost-effective RF front-ends that can be placed on the motherboard and require minimal system integration," said Bob Ferreira, product line director of Consumer Communications at Zarlink. "Our production-ready design is simple to implement, and by addressing cost, design and performance issues, makes it easy for manufacturers to design consumer-friendly STBs."

The ZLE10532 reference design combines the ZL10036 tuner and ZL10312 demodulator to provide a complete motherboard-based RF subsystem for tuning, scanning, decoding, and demodulating digital satellite TV signals. It can be used in many manufacturing processes, allowing consumer electronics companies to quickly produce compact, easy-to-use satellite STBs.

The ZL10036 single-chip wideband direct conversion tuner supports QPSK (quadrature phase shift keying) modulation schemes. With alignment-free performance, the device provides all the necessary RF-to-digital signal conversion required for DSS (Digital Satellite System) and 1MSPS to 45MSPS DVB-S (Digital Video Broadcast-Satellite) receiver systems. The tuner also features a 'power and forget' VCO, eliminating the need for time-consuming VCO calibration required by other products.

The ZL10312 demodulator supports QPSK and BPSK (bipolar phase shift keying) modulation schemes, using advanced filters to detect and decode satellite channels without external components. An on-chip hard-wired controller enables the ZL10312 to achieve ultra-fast channel scanning capability with little intervention from an external processor. On setup, the demodulator automatically scans the complete satellite broadcast band and locks onto TV channels in minutes.





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