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CXA3275Q 데이터시트 PDF




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부품번호 CXA3275Q 기능
기능 PLL/OSC/MIX IC for Digital Tuner
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CXA3275Q 데이터시트, 핀배열, 회로
PLL/OSC/MIX IC for Digital Tuner
CXA3275Q
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.
40 pin QFP (Plastic)
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
Applications
Digital CATV tuners
Absolute Maximum Ratings (Ta = 25°C)
Supply voltage Vcc, PLLVcc –0.3 to +6.0 V
IFVcc
–0.3 to +6.0 V
Storage temperature
Tstg –55 to +150 °C
Allowable power dissipation
PD 1.58 W
(when mounted on a printed circuit board)
Operating Conditions
Supply voltage Vcc, PLLVcc
IFVcc
Operating temperature
Topr
4.5 to 5.5
4.5 to 5.5
–40 to +80
V
V
°C
Structure
Bipolar silicon monolithic IC
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.
–1–
E00461-PS




CXA3275Q pdf, 반도체, 판매, 대치품
CXA3275Q
Pin Symbol Pin voltage
No. [V]
14 IFIN2
2.7
3
14
15
15 IFIN1
2.7
Equivalent circuit
IFVcc
Description
5k 5k
IF inputs.
16 GND
0
17 MIXOUT2
18 MIXOUT1
18
20
17
20
GND
Mixer outputs.
19 Vcc
20 UIN2
VL/VH: 0
UHF: 1.9
19
21 UIN1
22 VHIN2
23 VHIN1
24 VLIN2
25 VLIN1
VL/VH: 0
UHF: 1.9
20 21
VH: 3
VL: 3.16
UHF: 3.24
VH: 3
VL: 3.16
UHF: 3.24
VH: 3.16
VL: 3
UHF: 3.24
VH: 3.16
VL: 3
UHF: 3.24
19
22 24
23 25
5k 5k
Band switch, mixer and local
oscillator circuit power supply.
Vcc
UHF inputs.
Vcc
VH and VL inputs.
4

4페이지










CXA3275Q 전자부품, 판매, 대치품
CXA3275Q
Electrical Characteristics (See the Electrical Characteristics Measurement Circuit.)
(Vcc = 5V, IFVcc = 5V, PLLVcc = 5V, Ta = 25°C)
Circuit Current
Item
Circuit current
Symbol
Measurement conditions
Iccv1
During VHF operation
Unbalanced output
Band switch output open
Iccu1
During UHF operation
Unbalanced output
Band switch output open
Iccv2
During VHF operation
Balanced output
Band switch output open
Iccu2
During UHF operation
Balanced output
Band switch output open
Min. Typ. Max. Unit
80 113 145 mA
85 120 151 mA
91 130 170 mA
100 137 177 mA
OSC/MIX/IF Amplifier Block
Item
Symbol
Measurement conditions
CG1-1 VL operation fRF = 50MHz, fIF = 39MHz
CG1-2 VL operation fRF = 150MHz, fIF = 39MHz
Conversion gain 1 1
(Unbalanced)
CG1-3 VH operation fRF = 150MHz, fIF = 39MHz
CG1-4 VH operation fRF = 450MHz, fIF = 39MHz
CG1-5 UHF operation fRF = 450MHz, fIF = 39MHz
CG1-6 UHF operation fRF = 850MHz, fIF = 39MHz
CG2-1 VL operation fRF = 50MHz, fIF = 39MHz
CG2-2 VL operation fRF = 150MHz, fIF = 39MHz
Conversion gain 2 1, 2 CG2-3 VH operation fRF = 150MHz, fIF = 39MHz
(Balanced)
CG2-4 VH operation fRF = 450MHz, fIF = 39MHz
CG2-5 UHF operation fRF = 450MHz, fIF = 39MHz
CG2-6 UHF operation fRF = 850MHz, fIF = 39MHz
NF1 VL operation fRF = 50MHz, fIF = 39MHz
NF2 VL operation fRF = 150MHz, fIF = 39MHz
Noise figure 1, 3
(Unbalanced)
NF3 VH operation fRF = 150MHz, fIF = 39MHz
NF4 VH operation fRF = 450MHz, fIF = 39MHz
NF5 UHF operation fRF = 450MHz, fIF = 39MHz
NF6 UHF operation fRF = 850MHz, fIF = 39MHz
Min.
18.5
19
19
19
23.5
24.5
25.5
26
26
26
30.5
31.5
Typ.
21.5
22
22
22
26.5
27.5
28.5
29
29
29
33.5
34.5
15.5
15
15
15
10.5
10.5
Max.
25
25.5
25.5
25.5
30
31
32
32.5
32.5
32.5
37
38
18.5
18
18
18
13.5
13.5
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
7

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부품번호상세설명 및 기능제조사
CXA3275Q

PLL/OSC/MIX IC for Digital Tuner

Sony Corporation
Sony Corporation

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