Description
The CXA3275Q is a monolithic tuner IC for single conversion system digital broadcast tuners. This IC integrates three sets of local oscillator and mixer circuits (VHF Low Band/ VHF High Band/UHF Band), an IF amplifier and a tuning PLL onto a single chip, enabling further miniaturization of the tuner.

Features
• Balanced oscillators with low-phase noise and excellent oscillation stability (UHF: 4 pins, VHF: 2 pins)
• High linearity mixer and IF amplifier
• IF output switchable between balanced and unbalanced
• Low-phase noise PLL synthesizer (3-wire bus format)
• Reference frequency programmable in 4 bits
• On-chip high voltage drive transistor for charge pump
• On-chip 4-output band switch (PNP transistor on/off)
• 40-pin QFP package

Applications
    Digital CATV tuners