AN7273 View Datasheet(PDF) - Panasonic Corporation
Part Name
Description
Manufacturer
AN7273 Datasheet PDF : 5 Pages
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ICs for FM/AMTuner
AN7273, AN7273S
VO, Vno, THD –Vi (FM)
0
–10
VO
–20
–30
VCC = 5V
fi = 10.7MHz
fm = 22.5kHz,
400Hz
0dB = 108mV
5
Vno
–40
4
–50
3
–60
2
–70
–80
0
1
THD
0
20 40 60 80 100 120
Input Voltage Vi (dBµ)
VO, S/N, THD –Vi (AM)
10
0
S/N
–10
–20
VO
0dB = 81mV
VCC = 5V
fm = 400Hz
12
fi = 1MHz
10
–30
THD
8
–40
Mod. = 80%
6
–50
4
–60
–70
0
2
Mod. = 30%
0
20 40 60 80 100 120
Input Voltage Vi (dBµ)
V15 –Vi
1.6
VCC = 5V
(AM) fi = 1MHz
1.4
fm = 400Hz, 30%
(FM) fi = 10.7MHz
fm = 400Hz, 22.5kHz
1.2
AM
1.0
FM
0.8
0.6
0.4
0.2
0
0 20 40 60 80 100 120
Input Voltage Vi (dBµ)
Vi (lim), VO, Itot –VCC (FM)
140
50
14
Itot
(Mute ON)
Itot (Mute
OFF)
12
120
48
10
VO
8
100
46
6
Vi (lim)
4
80
44
2
VCC = 5V
fi = 10.7MHz
0
fm = 400Hz, 22.5kHz
60
0 2 4 6 8 10 12 14 16
Supply VoltageVCC (V)
VO, Vi, Itot –VCC (AM)
140
120
fm = 400Hz, 30%
fi = 1MHz
100
80
28
60
24
VO (Vi = 80dBµ)
14
13
40
20
16
12
12
Itot
11
Vi (at VO = 10mV )
10
0 2 4 6 8 10 12 14 16
Supply Voltage VCC (V)
VO –Vi
0
Mute OFF
Mute ON
–20
–40
–60
–80
0
20 40 60 80 100 120
Input Voltage Vi (dBµ)
VO –Df
10
Mute OFF
0
–10
–20
Mute ON
–30
–40
–50
–60
–70
–300 –200 –100 0 100 200 300
Input Frequency Change Df (kHz)
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