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PDF CXA3225N Data sheet ( Hoja de datos )
| Número de pieza | CXA3225N | |
| Descripción | All Band TV Tuner IC (VHF-CATV-UHF) | |
| Fabricantes | Sony Corporation | |
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CXA3225N
All Band TV Tuner IC (VHF-CATV-UHF)
Description
The CXA3225N is a TV tuner monolithic IC which
integrates local oscillator and mixer circuits for VHF
band, local oscillator and mixer circuits for UHF
band, and an IF amplifier onto a single chip. This IC
adopts a 20-pin SSOP package and is suitable for
miniaturizing voltage synthesizer tuner.
20 pin SSOP (Plastic)
Features
• Low power consumption (5 V, 46 mA typ.)
• Single 5 V power supply
• Superior cross modulation
• Balance-type UHF oscillator with good oscillation
stability (4 pins)
• IF output can be selected from symmetrical or
asymmetrical
• Double-tuned filter can be connected to MIX output
• SSOP 20-pin package
Applications
• TV tuners
• VCR tuners
• CATV tuners
-Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC1 –0.3 to +5.5 V
• Storage temperature Tstg –55 to +150 °C
• Allowable power dissipation
PD 465 mW
(when mounted on a printed circuit board)
Operating Conditions
• Supply voltage
• Operating temperature
VCC1
Topr
4.75 to 5.30
–20 to +75
V
°C
Structure
Bipolar silicon monolithic 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.
—1—
E98950-TE
1 page  
Pin
Symbol
No.
Typical pin
voltage (V)
2.8 during
symmetrical
output
20 IFOUT1
2.8 during
asymmetrical
output
Equivalent circuit
3
VCC
15
20
CXA3225N
Description
IF output.
—5—
5 Page 
CXA3225N
Reception frequency vs. Noise figure
(untuned input, asymmetrical output, DSB display)
20
fIF=38MHz
15
VHF (High)
VHF (Low)
10
UHF
5
I/O characteristics (untuned input, asymmetrical output)
20
0
–20
fRF=100MHz (VHF)
fRF=500MHz (UHF)
fIF is both f=38MHz
–40
0
0 100 200 300 400 500 600 700 800 900
Reception frequency [MHz]
–60
–60
–40 –20
RF input level [dBm]
0
I/O characteristics (untuned input, symmetrical output)
40
20
0
fRF=100MHz (VHF)
fRF=500MHz (UHF)
fIF is both f=38MHz
–20
–40
–60
–40 –20
RF input level [dBm]
0
Supply voltage fluctuation of oscillation frequency
400
VCC+5%
300 VCC–5%
(VCC=5V)
200
VHF (Low) VHF (High)
100
0
UHF
–100
–200
–300
–400
0
100 200 300 400 500 600 700 800 900
Oscillation frequency [MHz]
—11—
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet CXA3225N.PDF ] | |
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