The MAX3550/MAX3551/MAX3553 low-cost, broadband, dual-conversion tuner ICs are designed for use in analog and digital television receivers. Each IC integrates all necessary RF functions, including an integrated HI-IF filter, fully integrated VCOs, and an integrated IF VGA. The operating frequency range extends from 50MHz to 878MHz while providing over 60dB RF/IF gain-control range. The MAX3550/MAX3551 have an IF frequency centered at 44MHz, while the MAX3553 has an IF output centered at 36MHz. These devices include a variable-gain front end, achieving an overall 8dB noise figure. A dual synthesizer generates both local oscillator (LO) frequencies, providing superior phase noise performance of -86dBc/Hz at 10kHz. The integrated HI-IF filter achieves 68dBc of image rejection. Only an IF SAW filter, passive loop filters, and a crystal are needed to complete a single-chip tuner. Device programming and configuration are accomplished with a 3-wire serial interface for the MAX3550, and with a 2-wire serial interface for the MAX3551/MAX3553.