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PDF AN7273 Data sheet ( Hoja de datos )
| Número de pieza | AN7273 | |
| Descripción | AM Tuner/ FM/AM IF Amplifier Circuit | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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ICs for FM/AM Tuner
AN7273, AN7273S
AM Tuner, FM/AM IF Amplifier Circuit
s 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.
s 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
AN7273
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
6.3±0.25
Unit : mm
0.51min.
3.8±0.25 (3.45)
3 ~ 15˚
7.62±0.25
+
0.3 –
00..1025
18-Lead DIP Package (DIP018-P-0300E)
AN7273S
Unit : mm
1 18
9 10
s Block Diagram
1
7
89
AM–FM
IF Amp.
FM IF
Amp.
12
FM
Quad. Det.
0.3
5.4±0.3
7.7±0.3
18-Lead SOP Package (SOP018-P-0300)
Mute Det.
14 VCC
17 VREF
16
Level Meter
4
3 AM RF
Amp.
AM
Mixer
Mute or Shock
Noise Canceller
AF Amp.
AM
L. Osc.
AGC
AM Det.
13
15
5 18 6 2 10 11
VCC (AM)
GND
1 page  
ICs for FM/AMTuner
s Coil Specifications
Symbol Use, Freq.
Type No.
FM
T1
Quad. Coil
10.7MHz
ELF–
7S752A
AN7273, AN7273S
Maker Connection Diagram Number of Turns Tuning Cap. Unloaded Q
Matsushita
1
2
3
4
1 – 2 8T
2 – 3 5T
4 – 6 3T
6
100pF
90±20%
T2
AM MW
Osc. Coil
ELL–
7S754
Matsushita
3
2
1
4
1 – 2 4T
2 – 3 125T
4 – 6 7T
6
—
95±20%
3
AM Mix.
T3 Output
455kHz
EIA–
7S802A
Matsushita 2
1
4
3 – 2 35T
6 – 4 10T
2 – 1 19T
6
1500pF
60±30%
s Ceramic Filter Specification
Symbol
Use
Type No.
CF1
AM IF
CFM2– 455B
Maker
Toko
Center Freq.
455kHz
Band Width
7kHz (–6dB)
Loss
2.6dB
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet AN7273.PDF ] | |
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