Description

The CXA3555N is a monolithic TV tuner IC which integrates local oscillator and mixer circuits for VHF band, local oscillator and mixer circuits for UHF band, an IF amplifier and a tuning PLL onto a single chip, enabling further miniaturization of the tuner.

Features

• Low power consumption (5V, 63mA typ.)

• Low noise figure, low distortion characteristics

• High gain/low gain selectable

• Supports IF double-tuned/adjacent channel trap

• Balanced oscillator circuits (3 sets) with excellent oscillation stability

• On-chip PLL supports I2C bus

• On-chip high voltage drive transistor for charge pump

• Frequency step selectable from 31.25, 50 or 62.5kHz (when using a 4MHz crystal)

• Low-phase noise synthesizer

• On-chip 4-output band switch (output voltage: 5V, current capacity: 5mA)

• 30-pin SSOP small package

Applications

• TV tuners

• VCR tuners

• CATV tuners