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CXA3275Q Datasheet

  • CXA3275Q

  • PLL/OSC/MIX IC for Digital Tuner

  • 22頁

  • SONY   SONY

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CXA3275Q
PLL/OSC/MIX IC for Digital Tuner
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
鈥?/div>
Balanced oscillators with low-phase noise and
excellent oscillation stability (UHF: 4 pins, VHF: 2 pins)
鈥?/div>
High linearity mixer and IF amplifier
鈥?/div>
IF output switchable between balanced and
unbalanced
鈥?/div>
Low-phase noise PLL synthesizer
(3-wire bus format)
鈥?/div>
Reference frequency programmable in 4 bits
鈥?/div>
On-chip high voltage drive transistor for charge
pump
鈥?/div>
On-chip 4-output band switch (PNP transistor
on/off)
鈥?/div>
40-pin QFP package
Applications
Digital CATV tuners
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
(Ta = 25擄C)
鈥?/div>
Supply voltage
Vcc, PLLVcc
鈥?.3 to +6.0
鈥?.3 to +6.0
鈥?5 to +150
V
V
擄C
IFVcc
鈥?/div>
Storage temperature
Tstg
鈥?/div>
Allowable power dissipation
40 pin QFP (Plastic)
P
D
1.58
W
(when mounted on a printed circuit board)
Operating Conditions
鈥?/div>
Supply voltage Vcc, PLLVcc
IFVcc
鈥?/div>
Operating temperature
Topr
4.5 to 5.5
4.5 to 5.5
鈥?0 to +80
V
V
擄C
This IC has pins whose electrostatic discharge strength is weak as a high-frequency process is used for this IC.
Take care when 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.
鈥?鈥?/div>
E00461-PS

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