CXA3275Q Overview
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.
CXA3275Q Key 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