AN7280S データシートの表示（PDF） - Panasonic Corporation
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AN7280S Datasheet PDF : 7 Pages
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ICs for FM/AM Tuner
IF-Amp. Gain Adjustment
Input IF Amp.
13
f=10.7MHz
40
Output
330Ω
30
20
10
00
1k
10K
∞
Pin13 Adjusting Resistance (Ω)
AGC ON Level
VCC= 8V
110
fin = 18MHz
Radj. is Piny external resistance
(AGC Start Point Variable)
100
90
Radj.= 0Ω
80
27dB
70
60
Radj.= ∞
50
0
01
1.4 1.8 2.2
4
Pin7 Vcont in (V)
AN7280S
Amp. Gain Adjustment
with AGC
110
VCC = 8V
fin = 98MHz No Adjustment
Pin7 = HIGH
100
90
80
Pin9 =
High
70
60
Pin9 = Low
50
0
1k
10K
∞
Pin6 Adjusting Resistance (Ω)
Supply Voltage Change
110
100
Local Oscillation Level
60
AGC ON Level
50
20
Practical Sensitivity
10
Limiting Sensitivity
06
7
8
9
10
VCC (V)
Temperature Characteristics
80
IC for IF/DET
is normal temperature
70
60
50
AGC ON Level (max. Gain)
40
30
20
Practical Sensitivity (S/N=30dB)
10
Limiting Sensitivity
0
–60 –40 –20 0 20 40 60 80 100
Ta (˚C)
Supply Voltage Dependence
No Input
35
30
25
5
20
4
Vref
Itot
15
3
10
2
5
1
0
0
0 2 4 6 8 10 12
VCC (V)
Total Gain
Temperature Characteristics
10
Mixer+IF–Amp.
8
VCC= 8V
6
4
2
0 0dB= 43.5dB
–2
–4
–6
–8
–10 –40 –20 0 20 40 60 80 100
Ta (˚C)
Supply Voltage Dependence
No Input
11
10
9
5
Vt
8
4
7
3
6
SSC ON Level
2
5
1
4
0
5 6 7 8 9 10 11 12
VCC (V)
AGC Start Point
Temperature Characteristics
105
100
Pin7=1V
95
Pin6=GND
Pin9=OPEN
90
85
Pin7=HIGH
80
Pin6=GND
Pin9=OPEN
75
Pin7=HIGH
70
Pin6=OPEN
Pin9=5V
65 Pin7=HIGH
60
Pin6=OPEN
Pin9=OPEN
55 –40 –20 0 20 40 60 80 100
Ta (˚C)
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