
AN7273, AN7273S
ICs for FM/AMTuner
Pin No.
1
2
3
4
5
6
7
8
9
Pin Name
FM IF Input
AM Supply/Mute Adjustment
AM RF Input
AM Mixer Output
AGC Output (2)
AGC Output (1)
AM IF Input
IF By-pass
IF By-pass
I
Pin Descriptions
Pin No.
10
11
12
13
14
15
16
17
18
Pin Name
AM Detection Output
GND
FM Detection Coil
AF Output
V
CC
Level Meter Output
AFC Output
Reference Voltage
Local Oscillation Coil
Parameter
Symbol
V
CC
I
CC
Rating
14.4
30
317 *
1
210 *
2
–20 ~ + 75
–20 ~ + 75
–55 ~ + 150
–55 ~ + 125
Unit
P
D
T
opr
T
csg
AN7273
AN7273S
AN7273
AN7273S
AN7273
AN7273S
Power Dissipation
Operating Ambient Temperature
Storage Temperature
Supply Voltage
Supply Current
mW
C
C
V
mA
*1 Ta = 25C, *2 Ta = 75C
I
Absolute Maximum Ratings
(Ta=25C)
DC measurement
V
i
=80dB
μ
Input at V
O
= –3dB
Input at V
O
=more than –20dB
V
i
=70dB
μ
V
i
=100dB
μ
DC measurement
V
i
=80dB
μ
Input at V
O
=10mV
V
i
= –10dB
μ
V
i
=80dB
μ
Parameter
Symbol
Condition
min.
typ.
max.
Unit
I
Electrical Characteristics
(V
CC
= 5V, Ta= 25C)
I
tot
V
O
V
i (lim)
V
i (Mute)
V
15–11
V
15–11
I
tot
V
O
S
max.
V
15–11
V
15–11
9
75
43.5
55
0.61
1.14
8
60
4
0
1.12
14
100
46
64
0.8
1.26
13
80
9.5
1.25
20
125
49.5
73
1.1
1.42
19
100
15
130
1.38
mA
mV
dB
μ
dB
μ
V
V
mA
mA
dB
μ
mV
V
Total Circuit Current
Demodulation Output Level
Limiting Sensitivity
Muting Sensitivity
Level Meter Driving Output (1)
Level Meter Driving Output (2)
Total Circuit Current
Detection Output Level
Max. Sensitivity
Level Meter Driving Output (1)
Level Meter Driving Output (2)
Note) Unless otherwise specified, f
i
=10.7MHz, Mod.
= 22.5kHz, f
= 400Hz (FM)
f
i
=1MHz, Mod.
= 30%, f
m
= 400Hz (AM)
FM
AM
Parameter
Symbol
V
CC (opr)
Range
3 ~ 12V
I
Recommended Operating Range
(Ta = 25C)
Operating Supply Voltage Range