General Description
The MAX2165 direct-conversion tuner IC is designed for handheld digital video broadcast (DVB-H) applications. The tuner covers a 470MHz to 780MHz input frequency range and features an I/Q baseband interface. The MAX2165’s direct-conversion architecture eliminates the need for an IF-SAW filter, allowing for reduced bill of materials cost. The design integrates a variable-gain, low-noise amplifier (LNA); a notch filter; an RF tracking filter; a quadrature mixer; a power detector; programmable baseband lowpass channel selection filters; baseband variable-gain amplifiers (VGA); DC offset correction circuitry; and a complete fractional-N frequency synthesizer. The part is programmable through a 2-wire I2C-compatible serial interface.

Features
♦ 93mA (typ) Current Consumption from a Single +2.85V Supply Voltage
♦ 21mW (typ) Average Power Consumption at 8% Duty Cycle
♦ Direct-Conversion Architecture Eliminates IF SAW Filter
♦ Integrated RF Tuneable Notch Filter for Operation in the Presence of Cellular Blockers
♦ Integrated DC Offset Correction Circuitry
♦ Integrated RF Notch Filter for Operation in thePresence of Up to -7dBm Cellular Blockers
♦ Extended UHF Band Operation
♦ 5mm x 5mm x 0.8mm, 28-Pin Thin QFN Package

Applications
DVB-H Handheld Receivers
DVB-T Portable Devices
DMB-T/H Portable Devices
ISDB-T Receivers (13 Segment)