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PDF BA4404 Data sheet ( Hoja de datos )
| Número de pieza | BA4404 | |
| Descripción | (BA4402 / BA4404) FM Front End | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Audio ICs
FM front end
BA4402 / BA4404
The BA4402 and BA4404 are front end ICs for FM radio receivers. These devices can be used in a wide range of
applications, from 3V portable radios to home stereo tuners.
The BA4402 and BA4404 consist of an RF amplifier, oscillator circuit, mixer circuit, and a variable capacitor-diode for
AFC. They are pin compatible, and either can be selected depending on the amount of gain needed and other re-
quirements of the application.
•Applications
FM pocket radios
Radio cassette players
Home stereos
•Features
1) Wide operating voltage range : 1.8 to 9V.
2) High gain with good stability.
3) An appropriate device can be selected depending
on the need for AFC and the amount of gain re-
quired.
• B l o c k diagram
BA4402/BA4404
Product name
BA4402
BA44Q4
Variable capacitor
Yes
Yes
Gain
32dB
38dB
RF amplifier
Common base
Common emitter
46 noiim
1 page  
Audio ICs
BA4402 / BA4404
300
sr 250
£
o 150
? 100
VCC=2V
?% 100
o
VCC=3V
f|N=100MHz
V|M=70dB /JV
"0 2 4 6 8 10
SUPPLY VOLTAGE : V c c (V)
Fig. 12 Oscillator voltage vs.
supply voltage
BA4402/BA4404
20
10
r 16
oI«f
14
12
<L7U5 10
of
<a
e
tj
<L> 4
2
1 234
REVERSE VOLTAGE : V R (V)
5
Fig. 15 AFC capacitor capacitance vs.
applied voltage
•External dimensions (Unit: mm)
-50 -25
0
25 50 75 100
AMBIENT TEMPERATURE : Ta ( t )
Fig. 13 Oscillator voltage vs.
ambient temperature
-50 -25
0
25 50 75 1 00
AMBIENT TEMPERATURE : Ta ( t )
Fig. 14 Output voltage vs.
ambient temperature
SIP9
50 noHm
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet BA4404.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BA4402 | (BA4402 / BA4404) FM Front End | ROHM Semiconductor |
| BA4402 | (BA4402 - BA4405) FM Front End | ROHM Semiconductor |
| BA4403 | (BA4402 - BA4405) FM Front End | ROHM Semiconductor |
| BA4404 | (BA4402 / BA4404) FM Front End | ROHM Semiconductor |
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