CXA3250N Datasheet, PDF (1/35 Pages) Sony Corporation – All Band TV Tuner IC with On-chip PLL

CXA3250N
All Band TV Tuner IC with On-chip PLL
Description
The CXA3250N 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.
30 pin SSOP (Plastic)
Features
• Low power consumption (5 V, 69 mA typ.)
• Superior cross modulation
• Balanced UHF oscillator (4 pins) with excellent
oscillation stability
• Supports both I²C and 3-wire bus modes
• Automatic identification of 18, 19 or 27-bit control
(during 3-wire bus mode)
• On-chip A/D converter (during I²C bus mode)
• On-chip high voltage drive transistor for charge
pump
• Reference frequency selectable from 31.25, 50 or
62.5 kHz (when using a 4 MHz crystal)
• Low-phase noise synthesizer
• On-chip 4-output band switch (supports output
voltages from 5 to 9 V)
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC1, VCC2 –0.3 to +5.5 V
VCC3 –0.3 to +10.0 V
• Storage temperature Tstg –55 to +150 °C
• Allowable power dissipation
PD
580 mW
(when mounted on a printed circuit board)
Operating Conditions
• Supply voltage
VCC1, VCC2 4.75 to 5.30 V
VCC3 4.75 to 9.45 V
• Operating temperature Topr –25 to +75 °C
Applications
• TV tuners
• VCR tuners
• CATV tuners
Structure
Bipolar silicon monolithic IC
This IC has the pins whose electrostatic discharge strength is weak as the operating frequency is high and the high-frequency
process is used for this IC.
Take care of handling the IC.
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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E98X34-TE