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PDF TDA1220B Data sheet ( Hoja de datos )
| Número de pieza | TDA1220B | |
| Descripción | AM-FM QUALITY RADIO | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TDA1220B
AM-FM QUALITY RADIO
The TDA1220B is a monolithic integrated circuit in
a 16-lead dual in-line package.
It is intended for quality receivers produced in large
quantities.
The functions incorporated are:
AM SECTION
– Preamplifier and double balanced mixer
– One pin local oscillator
– IF amplifier with internal AGC
– Detector and audio preamplifier
FM SECTION
– IF amplifier and limiter
– Quadrature detector
– Audio preamplifier
The TDA1220B is suitable up to 30MHz AM and for
FM bands (including 450KHz narrow band) and
features:
– Very constant characteristics (3V to 16V)
– High sensitivity and low noise
– Very low tweet
DIP-16 Plastic
(0.25)
ORDERING NUMBER : TDA 1220BK
– Sensitivity regulation facility (*)
– High recovered audio signal suited for stereo
decoders and radio recorders
– Very simple DC switching of AM-FM
– Low current drain
– AFC facility
(*) Maximum AM sensitivity can be reduced by means of a resistor
(5 to 12KΩ) between pin 4 and ground.
BLOCK DIAGRAM
March 1993
1/18
1 page  
TDA1220B
Figure 3. Audio output, noise
and tweet levels vs. input
signal (AM section)
Figure 4. Distortion vs. input
signal and modulation index
(AM section)
Figure 5. Audio output vs.
supply voltage (AM section)
Figure 6. Audio output and
noise level vs. input signal (FM
section)
Figure 7. Distortion vs. input
signal (FM section)
Figure 8. Audio output vs.
supply voltage (FM section)
Figure 9. Amplitude modu-
lation rejection vs. input signal
(FM section)
Figure 10. ∆ DC output voltage
(pin. 9) vs. frequency shift (FM
section)
Figure 11. ∆ DC output voltage
(pin 9) vs. ambient
temperature (FM section)
5/18
5 Page 
TDA1220B
APPLICATION INFORMATION (continued)
F1 - 10.7 MHz IF Coil
Co
(pF)
f
(MHz)
–
Qo
1-3
– 10.7 110
TURNS
1-2 2-3 4-6
682
TOKO - FM1 - 10x10 mm.
154 AN - 7A5965R
F3 and F5 - 455 KHz IF Coil
Co
(pF)
f
(KHz)
1.3
180 455
Qo
1-3
70
TURNS
1-2 2-3 4-6
57 116 24
TOKO - AM3 - 10x10 mm.
RLC - 4A7525N
F4 - FM Detector Coil
Co
(pF)
f
(KHz)
1.3
Qo
1-3
82 10.7 100
TURNS
1-3 –
12 –
–
–
TOKO - 10x10 mm.
KACS - K586 HM
F6 - AM Oscillator Coil
f
(kHz)
796
L
(µH)
1-3
220
Qo TURNS
1-3 1-2 2-3 4-6
80 2 75 8
TOKO - 10x10 mm.
RWO + 6A6574N
L5 - Antenna Coil
f
(KHz)
796
L
(µH)
1-2
Qo TURNS
1-2 1-2 3-4
105 7
WIRE: LITZ - 15x0.05 mm.
CORE: 10x80 mm.
11/18
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet TDA1220B.PDF ] | |
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