An 7273 1r3o3l
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ICs for FM/AM Tuner
AN7273, AN7273S 2 3
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.
4
15
5
14
6
13
7
12
8
11
9
10
21.7±0.3
■ Overview
18 17 16
■ 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
Unit : mm
2.54
1
0.5±0.1
AN7273
1.2±0.25
AM Tuner, FM/AM IF Amplifier Circuit
0.51min. 6.3±0.25 3.8±0.25
(3.45)
+ 0.1 5 2
0.3 – 0.0
3 ~ 15˚ 7.62±0.25 18-Lead DIP Package (DIP018-P-0300E)
AN7273S 1
18
9
10
0.15
0.3 5.4±0.3
0.65
0.1
1.2±0.3
1.27
12.6±0.3
0.4±0.25
1.3
Unit : mm
7.7±0.3 18-Lead SOP Package (SOP018-P-0300)
■ Block Diagram 8
12
9
14 VCC 1 7
AM–FM IF Amp.
FM IF Amp.
FM Quad. Det.
17 VREF
Mute Det.
16
Mute or Shock Noise Canceller
Level Meter
AF Amp.
13
15 4 3
AM RF Amp.
AM Mixer
5
AM L. Osc.
AGC
18
6
AM Det.
2 VCC (AM)
10
11 GND
ICs for FM/AMTuner
AN7273, AN7273S ■ Pin Descriptions Pin No.
Pin Name
Pin No.
Pin Name
1
FM IF Input
10
AM Detection Output
2
AM Supply/Mute Adjustment
11
GND
3
AM RF Input
12
FM Detection Coil
4
AM Mixer Output
13
AF Output
5
AGC Output (2)
14
VCC
6
AGC Output (1)
15
Level Meter Output
7
AM IF Input
16
AFC Output
8
IF By-
17
Reference Voltage
9
IF By-
18
Local Oscillation Coil
■ Absolute Maximum Ratings (Ta=25˚C) Symbol
Rating
Supply Voltage
Parameter
VCC
14.4
Supply Current
ICC
30 317 *1
Power Dissipation Operating Ambient Temperature Storage Temperature
AN7273
PD
AN7273S AN7273 AN7273
V mA mW
210 *2 –20 ~ + 75
Topr
AN7273S
Unit
˚C
–20 ~ + 75 –55 ~ + 150
Tcsg
˚C
–55 ~ + 125
AN7273S *1 Ta = 25˚C, *2 Ta = 75˚C
■ Recommended Operating Range (Ta = 25˚C) Parameter
Symbol
Range
Operating Supply Voltage Range
VCC (opr)
3 ~ 12V
■ Electrical Characteristics (VCC= 5V, Ta= 25˚C) Parameter
FM
Condition
Total Circuit Current
Itot
DC measurement
Demodulation Output Level
VO
Vi =80dBµ
min.
typ.
max.
Unit mA
9
14
20
75
100
125
mV
43.5
46
49.5
dBµ
55
64
73
dBµ V
Limiting Sensitivity
Vi (lim)
Input at VO = –3dB
Muting Sensitivity
Vi (Mute)
Input at VO =more than –20dB
Level Meter Driving Output (1)
V15–11
Vi =70dBµ
0.61
0.8
1.1
Level Meter Driving Output (2)
V15–11
Vi =100dBµ
1.14
1.26
1.42
V
8
13
19
mA
100
mA
Total Circuit Current Detection Output Level AM
Symbol
Itot
DC measurement
VO
Vi =80dBµ
60
80
Max. Sensitivity
Smax.
Input at VO =10mV
4
9.5
Level Meter Driving Output (1)
V15–11
Vi = –10dBµ
0
Level Meter Driving Output (2)
V15–11
Vi =80dBµ
Note) Unless otherwise specified, fi =10.7MHz, Mod. = 22.5kHz, fm = 400Hz (FM) fi =1MHz, Mod. = 30%, fm = 400Hz (AM)
1.12
1.25
15
dBµ
130
mV
1.38
V
ICs for FM/AMTuner
AN7273, AN7273S
VO, S/N, THD –Vi (AM)
5
Vno
–40
4
–50
3
–60
2 1
–70 THD 20
40
60
80
0 120
100
–10
12 10
–20 –30
THD
8
–40
Mod. = 80%
6 4
–50
2
–60 –70
Mod. = 30% 0
20
40
60
80
60
48
12
FF)
ute O
I tot (M
10 VO 8
46
6 Vi (lim) 4
44
2 VCC = 5V fi = 10.7MHz 0 fm = 400Hz, 22.5kHz 0
0.4 0.2 0
0
20
2
4
6
8
40
100 80 60 40
10 12 14 16
28
VO (Vi = 80
dBµ)
14
24
13
20
12 Itot
16
11
Vi (at V = O 10mV )
12 0
2
4
6
8
10
10 12 14 16
Supply Voltage VCC (V)
VO –Vi
VO –Df
0
10 Mute OFF Mute OFF 0 Mute ON –10 Output Voltage VO (dB)
–20
–20 Mute ON –30 –40 –50
–60
–60 –80
0
20
40
60
80
100
Input Voltage Vi (dBµ)
120
80
fm = 400Hz, 30% fi = 1MHz
Supply VoltageVCC (V)
–40
60
100
Input Voltage Vi (dBµ)
120
Input Voltage Vi (dBµ)
I tot (M
Total Circuit Current Itot (mA)
80
0.6
VO, Vi, Itot –VCC (AM)
N)
ute O
100
FM 0.8
140
14 Output Voltage VO (mV)
50
120
AM 1.0
0 120
100
Vi (lim), VO, Itot –VCC (FM) 140
1.2
Input Voltage Vi (dBµ)
Input Voltage Vi (dBµ)
Input Limiting Voltage Vi (lim) (dBµ)
0
Output Voltage VO (mV)
–80
1.4 0dB = 81mV VCC = 5V fm = 400Hz fi = 1MHz
S/N
–70 –300 –200 –100
0
100
200
Input Frequency Change Df (kHz)
300
Total Circuit Current Itot (mA)
–30
VCC = 5V (AM) fi = 1MHz fm = 400Hz, 30% (FM) fi = 10.7MHz fm = 400Hz, 22.5kHz
VO 0 Level meter Voltage V15 (V)
–20
1.6
Total Harmonic Distortion THD (%)
VO
V15 –Vi
10
Output Voltage VO (dB), Signal to Noise Ratio S/N (dB)
VCC = 5V fi = 10.7MHz fm = 22.5kHz, 400Hz 0dB = 108mV
Total Harmonic Distortion THD (%)
–10
Output Voltage VO (dB)
Output Voltage VO (dB), Output Noise Voltage Vno (dB)
VO, Vno, THD –Vi (FM) 0
120
ICs for FM/AMTuner
AN7273, AN7273S ■ Application Circuit FM
D1 : MA27W
+ –
51Ω
T2
47µF + –
0.022µF 470Ω
0.0047µF T1
0.01 µF
+ –
10µF
0.022µF
VCC=5V + –
2.2kΩ
V15
100µF
2.2µF
47Ω + –
100µF
AM
5.1kΩ
0.022 µF
VO (FM, AM) 27kΩ
0.022µF
D1
18
17
16
1
2
3
15
14
13
12
11
10
7
8
9
AN7273/S +
6
–
+ –
4.7µF
5 100µF
4
0.022µF
0.022µF
2kΩ T3
10kΩ
From FM Front End.
CF1
Mute ON
330Ω
OFF
■ Printed Circuit Board Layout FM IF Input C1
AN7273 330Ω
AM ANT
ANT
CF1
100µF
T3
4.7µF
OSC
47pF
CF2 1
0.022µF 0.022µF
18
0.022µF
Mute SW
2.2kΩ
MA27W (Matsushita) VCC
100µF
0.0047µF
100µF
T1
470Ω 0.022µF
47µF
0.022µF
47Ω 10kΩ
10µF
22µF
Mute Adj.
T2
0.022µF
AM
AM IN
2.2kΩ
5.1kΩ
SW FM
VCC 1µF + – 27kΩ 0.01µF
AF Output
ICs for FM/AMTuner
AN7273, AN7273S
■ Coil Specifications Symbol
T1
T2
T3
Use, Freq. FM Quad. Coil 10.7MHz
AM MW Osc. Coil
AM Mix. Output 455kHz
Type No.
Maker
Connection Diagram Number of Turns Tuning Cap. 1
ELF– 7S752A
ELL– 7S754
EIA– 7S802A
Matsushita
4
2
Matsushita
3
6
3
4
2
Matsushita
1
6
3
4
2 1
6
1 – 2 8T 2 – 3 5T 4 – 6 3T
Unloaded Q
100pF
90±20%
1 – 2 4T 2 – 3 125T 4 – 6 7T
—
95±20%
3 – 2 35T 6 – 4 10T 2 – 1 19T
1500pF
60±30%
■ Ceramic Filter Specification Symbol
Use
Type No.
Maker
Center Freq.
Band Width
Loss
CF1
AM IF
CFM2– 455B
Toko
455kHz
7kHz (–6dB)
2.6dB
AN7273, AN7273S 2 3
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.
4
15
5
14
6
13
7
12
8
11
9
10
21.7±0.3
■ Overview
18 17 16
■ 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
Unit : mm
2.54
1
0.5±0.1
AN7273
1.2±0.25
AM Tuner, FM/AM IF Amplifier Circuit
0.51min. 6.3±0.25 3.8±0.25
(3.45)
+ 0.1 5 2
0.3 – 0.0
3 ~ 15˚ 7.62±0.25 18-Lead DIP Package (DIP018-P-0300E)
AN7273S 1
18
9
10
0.15
0.3 5.4±0.3
0.65
0.1
1.2±0.3
1.27
12.6±0.3
0.4±0.25
1.3
Unit : mm
7.7±0.3 18-Lead SOP Package (SOP018-P-0300)
■ Block Diagram 8
12
9
14 VCC 1 7
AM–FM IF Amp.
FM IF Amp.
FM Quad. Det.
17 VREF
Mute Det.
16
Mute or Shock Noise Canceller
Level Meter
AF Amp.
13
15 4 3
AM RF Amp.
AM Mixer
5
AM L. Osc.
AGC
18
6
AM Det.
2 VCC (AM)
10
11 GND
ICs for FM/AMTuner
AN7273, AN7273S ■ Pin Descriptions Pin No.
Pin Name
Pin No.
Pin Name
1
FM IF Input
10
AM Detection Output
2
AM Supply/Mute Adjustment
11
GND
3
AM RF Input
12
FM Detection Coil
4
AM Mixer Output
13
AF Output
5
AGC Output (2)
14
VCC
6
AGC Output (1)
15
Level Meter Output
7
AM IF Input
16
AFC Output
8
IF By-
17
Reference Voltage
9
IF By-
18
Local Oscillation Coil
■ Absolute Maximum Ratings (Ta=25˚C) Symbol
Rating
Supply Voltage
Parameter
VCC
14.4
Supply Current
ICC
30 317 *1
Power Dissipation Operating Ambient Temperature Storage Temperature
AN7273
PD
AN7273S AN7273 AN7273
V mA mW
210 *2 –20 ~ + 75
Topr
AN7273S
Unit
˚C
–20 ~ + 75 –55 ~ + 150
Tcsg
˚C
–55 ~ + 125
AN7273S *1 Ta = 25˚C, *2 Ta = 75˚C
■ Recommended Operating Range (Ta = 25˚C) Parameter
Symbol
Range
Operating Supply Voltage Range
VCC (opr)
3 ~ 12V
■ Electrical Characteristics (VCC= 5V, Ta= 25˚C) Parameter
FM
Condition
Total Circuit Current
Itot
DC measurement
Demodulation Output Level
VO
Vi =80dBµ
min.
typ.
max.
Unit mA
9
14
20
75
100
125
mV
43.5
46
49.5
dBµ
55
64
73
dBµ V
Limiting Sensitivity
Vi (lim)
Input at VO = –3dB
Muting Sensitivity
Vi (Mute)
Input at VO =more than –20dB
Level Meter Driving Output (1)
V15–11
Vi =70dBµ
0.61
0.8
1.1
Level Meter Driving Output (2)
V15–11
Vi =100dBµ
1.14
1.26
1.42
V
8
13
19
mA
100
mA
Total Circuit Current Detection Output Level AM
Symbol
Itot
DC measurement
VO
Vi =80dBµ
60
80
Max. Sensitivity
Smax.
Input at VO =10mV
4
9.5
Level Meter Driving Output (1)
V15–11
Vi = –10dBµ
0
Level Meter Driving Output (2)
V15–11
Vi =80dBµ
Note) Unless otherwise specified, fi =10.7MHz, Mod. = 22.5kHz, fm = 400Hz (FM) fi =1MHz, Mod. = 30%, fm = 400Hz (AM)
1.12
1.25
15
dBµ
130
mV
1.38
V
ICs for FM/AMTuner
AN7273, AN7273S
VO, S/N, THD –Vi (AM)
5
Vno
–40
4
–50
3
–60
2 1
–70 THD 20
40
60
80
0 120
100
–10
12 10
–20 –30
THD
8
–40
Mod. = 80%
6 4
–50
2
–60 –70
Mod. = 30% 0
20
40
60
80
60
48
12
FF)
ute O
I tot (M
10 VO 8
46
6 Vi (lim) 4
44
2 VCC = 5V fi = 10.7MHz 0 fm = 400Hz, 22.5kHz 0
0.4 0.2 0
0
20
2
4
6
8
40
100 80 60 40
10 12 14 16
28
VO (Vi = 80
dBµ)
14
24
13
20
12 Itot
16
11
Vi (at V = O 10mV )
12 0
2
4
6
8
10
10 12 14 16
Supply Voltage VCC (V)
VO –Vi
VO –Df
0
10 Mute OFF Mute OFF 0 Mute ON –10 Output Voltage VO (dB)
–20
–20 Mute ON –30 –40 –50
–60
–60 –80
0
20
40
60
80
100
Input Voltage Vi (dBµ)
120
80
fm = 400Hz, 30% fi = 1MHz
Supply VoltageVCC (V)
–40
60
100
Input Voltage Vi (dBµ)
120
Input Voltage Vi (dBµ)
I tot (M
Total Circuit Current Itot (mA)
80
0.6
VO, Vi, Itot –VCC (AM)
N)
ute O
100
FM 0.8
140
14 Output Voltage VO (mV)
50
120
AM 1.0
0 120
100
Vi (lim), VO, Itot –VCC (FM) 140
1.2
Input Voltage Vi (dBµ)
Input Voltage Vi (dBµ)
Input Limiting Voltage Vi (lim) (dBµ)
0
Output Voltage VO (mV)
–80
1.4 0dB = 81mV VCC = 5V fm = 400Hz fi = 1MHz
S/N
–70 –300 –200 –100
0
100
200
Input Frequency Change Df (kHz)
300
Total Circuit Current Itot (mA)
–30
VCC = 5V (AM) fi = 1MHz fm = 400Hz, 30% (FM) fi = 10.7MHz fm = 400Hz, 22.5kHz
VO 0 Level meter Voltage V15 (V)
–20
1.6
Total Harmonic Distortion THD (%)
VO
V15 –Vi
10
Output Voltage VO (dB), Signal to Noise Ratio S/N (dB)
VCC = 5V fi = 10.7MHz fm = 22.5kHz, 400Hz 0dB = 108mV
Total Harmonic Distortion THD (%)
–10
Output Voltage VO (dB)
Output Voltage VO (dB), Output Noise Voltage Vno (dB)
VO, Vno, THD –Vi (FM) 0
120
ICs for FM/AMTuner
AN7273, AN7273S ■ Application Circuit FM
D1 : MA27W
+ –
51Ω
T2
47µF + –
0.022µF 470Ω
0.0047µF T1
0.01 µF
+ –
10µF
0.022µF
VCC=5V + –
2.2kΩ
V15
100µF
2.2µF
47Ω + –
100µF
AM
5.1kΩ
0.022 µF
VO (FM, AM) 27kΩ
0.022µF
D1
18
17
16
1
2
3
15
14
13
12
11
10
7
8
9
AN7273/S +
6
–
+ –
4.7µF
5 100µF
4
0.022µF
0.022µF
2kΩ T3
10kΩ
From FM Front End.
CF1
Mute ON
330Ω
OFF
■ Printed Circuit Board Layout FM IF Input C1
AN7273 330Ω
AM ANT
ANT
CF1
100µF
T3
4.7µF
OSC
47pF
CF2 1
0.022µF 0.022µF
18
0.022µF
Mute SW
2.2kΩ
MA27W (Matsushita) VCC
100µF
0.0047µF
100µF
T1
470Ω 0.022µF
47µF
0.022µF
47Ω 10kΩ
10µF
22µF
Mute Adj.
T2
0.022µF
AM
AM IN
2.2kΩ
5.1kΩ
SW FM
VCC 1µF + – 27kΩ 0.01µF
AF Output
ICs for FM/AMTuner
AN7273, AN7273S
■ Coil Specifications Symbol
T1
T2
T3
Use, Freq. FM Quad. Coil 10.7MHz
AM MW Osc. Coil
AM Mix. Output 455kHz
Type No.
Maker
Connection Diagram Number of Turns Tuning Cap. 1
ELF– 7S752A
ELL– 7S754
EIA– 7S802A
Matsushita
4
2
Matsushita
3
6
3
4
2
Matsushita
1
6
3
4
2 1
6
1 – 2 8T 2 – 3 5T 4 – 6 3T
Unloaded Q
100pF
90±20%
1 – 2 4T 2 – 3 125T 4 – 6 7T
—
95±20%
3 – 2 35T 6 – 4 10T 2 – 1 19T
1500pF
60±30%
■ Ceramic Filter Specification Symbol
Use
Type No.
Maker
Center Freq.
Band Width
Loss
CF1
AM IF
CFM2– 455B
Toko
455kHz
7kHz (–6dB)
2.6dB
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