, AN7273 S, Książki, polskie, elektronika i elektrotechnika, Układy scalone - baza, Uklady scalone baza, Baza 

AN7273 S

AN7273 S, Książki, polskie, elektronika i elektrotechnika, Układy scalone - baza, Uklady scalone baza, Baza
[ Pobierz całość w formacie PDF ]
ICs for FM/AM Tuner
AN7273, AN7273S
AM Tuner, FM/AM IF Amplifier Circuit
AN7273
Unit : mm
Overview
The AN7273 and the AN7273S are the ICs designed
for Hi-Fi stereo tuner. They are functioned with stop signal
pin besides the AN7223S function.
1
2
3
4
5
6
7
8
18
17
16
15
14
13
12
11
Features
•
Level meter output (FM–AM common use)
•
Stop signal output (for synthesizer tuner)
•
AM : including RF amplifier and high sensitivity
•
Low power consumption
•
Low shock noise level from function switch operation
•
Fewer external parts
9
10
0.51min.
6.3±0.25
3.8±0.25
(3.45)
3 ~ 15˚
7.62±0.25
18-Lead DIP Package (DIP018-P-0300E)
AN7273S
Unit : mm
1
18
9
10
0.3
5.4±0.3
7.7±0.3
18-Lead SOP Package (SOP018-P-0300)
n
Block Diagram
8
9
12
14
V
CC
1
AM–FM
IF Amp.
FM IF
Amp.
FM
Quad. Det.
Mute Det.
17
V
REF
7
16
Level Meter
Mute or Shock
Noise Canceller
AF Amp.
13
4
15
3
AM RF
Amp.
AM
Mixer
AM
L. Osc.
AGC
AM Det.
5
18
6
2
10
11
V
CC (AM)
GND
n
n
  AN7273, AN7273S
ICs for FM/AMTuner
n
Pin Descriptions
Pin No.
Pin Name
Pin No.
Pin Name
1
2
3
4
5
6
7
8
9
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
10
11
12
13
14
15
16
17
18
AM Detection Output
GND
FM Detection Coil
AF Output
V
CC
Level Meter Output
AFC Output
Reference Voltage
Local Oscillation Coil
n
Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Symbol
Rating
Unit
Supply Voltage
Supply Current
V
CC
I
CC
14.4
30
317
*
1
210
*
2
–20 ~ + 75
–20 ~ + 75
–55 ~ + 150
–55 ~ + 125
V
mA
Power Dissipation
AN7273
AN7273S
AN7273
AN7273S
AN7273
AN7273S
P
D
mW
Operating Ambient Temperature
T
opr
˚C
Storage Temperature
T
csg
˚C
*
1 Ta = 25˚C,
*
2 Ta = 75˚C
n
Recommended Operating Range
(Ta = 25˚C)
Parameter
Symbol
Range
Operating Supply Voltage Range
V
CC (opr)
3 ~ 12V
n
Electrical Characteristics
(V
CC
= 5V, Ta= 25˚C)
Parameter
Symbol
Condition
min.
typ.
max.
Unit
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
m
= 400Hz (FM)
f
i
=1MHz, Mod.
= 30%, f
m
= 400Hz (AM)
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
µ
Input at V
O
= –3dB
Input at V
O
=more than –20dB
V
i
=70dBµ
V
i
=100dBµ
DC measurement
V
i
=80dBµ
Input at V
O
=10mV
V
i
= –10dBµ
V
i
=80dB
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
20
125
49.5
73
1.1
1.42
19
100
15
130
1.38
mA
mV
dBµ
dB
V
V
mA
mA
dBµ
mV
V
FM
AM
µ
1.25
DC measurement
V
i
=80dB
ICs for FM/AMTuner
AN7273, AN7273S
V
O
, V
no
, THD –V
i
(FM)
V
O
, S/N, THD –V
i
(AM)
V
15
–V
i
0
10
1.6
V
CC
= 5V
(AM) f
i
= 1MHz
f
m
= 400Hz, 30%
(FM) f
i
= 10.7MHz
f
m
= 400Hz, 22.5kHz
V
O
–10
0
1.4
V
CC
= 5V
f
i
= 10.7MHz
f
m
= 22.5kHz,
400Hz
0dB
= 108mV
V
O
S/N
0dB
= 81mV
V
CC
= 5V
f
m
= 400Hz
f
i
= 1MHz
–20
–10
12
1.2
AM
–30
5
–20
10
1.0
–40
V
n
o
4
–30
THD
8
0.8
FM
–50
3
–40
Mod.
= 80%
6
0.6
–60
2
–50
4
0.4
–70
1
–60
2
0.2
Mod.
= 30%
THD
–80
0
–70
0
0
0
20
40
60
80
100
120
0
20
40
60
80
100
120
0
20
40
60
80
100
120
Input Voltage V
i
(dBµ)
Input Voltage V
i
(dBµ)
Input Voltage V
i
(dBµ)
V
i (lim)
, V
O
, I
tot
–V
CC
(FM)
V
O
, V
i
, I
tot
–V
CC
(AM)
140
50
14
140
12
120
f
m
= 400Hz, 30%
f
i
= 1MHz
120
48
10
100
V
O
8
80
28
14
100
46
6
60
24
13
V
i (lim)
4
40
20
12
I
tot
80
44
2
16
11
V
CC
= 5V
f
i
= 10.7MHz
f
m
= 400Hz, 22.5kHz
0
12
10
60
0 2 4 6 8 10 12 14 16
0 2 4 6 8 10 12 14 16
Supply Voltage V
CC
(V)
Supply VoltageV
CC
(V)
V
O
–V
i
V
O
–Df
0
10
Mute OFF
Mute OFF
0
Mute ON
–20
–10
–20
Mute ON
–40
–30
–40
–60
–50
–60
–80
0
20
40
60
80
100
120
–70
–300 –200 –100
0
100
200
300
Input Voltage V
i
(dBµ)
Input Frequency Change Df (kHz)
AN7273, AN7273S
ICs for FM/AMTuner
n
Application Circuit
FM
47
½
V
CC
=5V
0.02
2
µ
F
AM
+
+
–
0.022
µ
F
–
V
15
4
70½
2.2
µ
F
47
µ
F
V
O
(FM, AM)
0.0047
µ
F
0.022µF
+
+
+
27k½
T
1
–
–
–
D
1
: MA27W
0.022
µ
F
51½
T
2
D
1
18
17 16 15 14 13 12 11 10
AN7273/S
1
2
3
4
5
6
7
8
9
+
+
–
–
0.022
µ
F
0.022
µ
F
2k
½
From
FM Front
End.
10k½
T
3
C
F
1
Mute
O
N
330½
OFF
n
Printed Circuit Board Layout
FM IF Input
C1
AN7273
AM ANT
CF1
100
µ
F
T3
ANT
OSC
4.
7µ
F
CF2
47
pF
0.022
µ
F
1
0.022µF
SW
FM
AM
18
0.022µF
IN
2.2k½
AM
T2
1
0
µF
T1
47
½
V
CC
1
µ
F
+ –
10k½
470
½
27k½
100
µ
F
AF Output
0.01
µ
F
Mute SW
MA27W (Matsushita)
V
CC
        ICs for FM/AMTuner
AN7273, AN7273S
n
Coil Specifications
Symbol
Use, Freq.
Type No.
Maker
Connection Diagram Number of Turns Tuning Cap.
Unloaded Q
FM
Quad. Coil
10.7MHz
1
4
1 – 2 8T
2 – 3 5T
4 – 6 3T
T
1
ELF–
7S752A
Matsushita
2
100pF
90±20%
3
6
3
4
1 – 2 4T
2 – 3 125T
4 – 6 7T
T
2
AM MW
Osc. Coil
ELL–
7S754
Matsushita
2
—
95±20%
1
6
AM Mix.
Output
455kHz
3
4
3 – 2 35T
6 – 4 10T
2 – 1 19T
T
3
EIA–
7S802A
Matsushita
2
1500pF
60±30%
1
6
n
Ceramic Filter Specification
Symbol
Use
Type No.
Maker
Center Freq.
Band Width
Loss
CF
1
AM IF
CFM2– 455B
Toko
455kHz
7kHz (–6dB)
2.6dB
[ Pobierz całość w formacie PDF ]
  • zanotowane.pl
  • doc.pisz.pl
  • pdf.pisz.pl
  • dodatni.htw.pl
    		•