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The SL1711 is a quadrature downconverter, intended primarily for application in professional and consumer digital satellite tuners.

The device contains all elements necessary, with the exception of external local oscillator tank to form a complete system operating at standard satellite receiver intermediate frequencies. It is intended for use with external carrier recovery.

The device includes a low noise RF input amplifier, a reference VCO with prescaler output buffer and In-phase and Quadrature mixers with baseband buffer amplifiers containing AGC gain control.

FEATURES

■ Single chip system for wideband quadrature downconversion

■ Compatible with all standard high IF frequencies

■ Excellent gain and phase match up to 30MHz baseband

■ High output referred linearity for low distortion and multi channel application

■ Simple low component application

■ Fully balanced low radiation design with fully integrated quadrature generation

■ High operating input sensitivity

■ On-board AGC facility

■ On chip oscillator for varactor tuning or SAW resonator operation

■ ESD protection (Normal ESD handling procedures should be observed)

APPLICATIONS

■ Satellite receiver systems

■ Data communications systems

■ Cable systems