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PDF TA7792 Data sheet ( Hoja de datos )
| Número de pieza | TA7792 | |
| Descripción | AM/FM 1 CHIP TUNER SYSTEM IC | |
| Fabricantes | TGS | |
| Logotipo |  |
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TIGER ELECTRONIC CO.,LTD
AM/FM 1 CHIP TUNER SYSTEM IC (1.5V USE)
TA7792
GENERAL DESCRIPTION
The TA7792 is AM/FM 1 chip tuner system (FM FRONT END+AM/FM IF) ICs,
w h i c h i s d e s i g n e d f o r l o w v o l t a g e o p e r a t i o n ( 1 . 5 V, 3 . 0 V ) . T h o s e a r e e s p e c i a l l y
suitable for stereo headphone radio and radio cassette recorder equipments. These
item can realize the low power dissipation and few external parts.
F E AT U R E S
AM detector coil-less
FM mixer coil-less
Switchover between AM/FM mode is possible with one-make switch.
Operating supply voltage range: Vcc(opr)=0.95~5V(Ta=25°C)
E x c e l l e n t l o w s u p p l y c u r r e n t ( V c c = 1 . 5 V, Ta = 2 5 ° C )
I c c ( A M ) = 1 . 2 m A ( Ty p . )
I c c ( F M ) = 4 . 0 m A ( Ty p . )
BLOCK DIAGRAM
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
1/9
http://www.Datasheet4U.com
1 page  
Silicore
TDA77779922
COIL DATA TEST CIRCUIT
COIL STAGE
TEST
FREQUENCY
L
µH
Co
(pF)
Qo
TURN
WIRE
1-2 2-3 1-3 4-6 (mmΦ)
L1 FM RF
100MHz
0.053 - 100 -
- 1.75 - 0.5UEW
L2 FM OSC
100MHz
0.065 - 100 -
- 2.25 - 0.5UEW
T1 AM OSC
796kHz
288 - 115 13 73 - - 0.08UEW
T2 AM IFT
455kHz
- 180 120 - - 180 15 0.06UEW
T3 FM DET
10.7MHz
-
82 110 -
- 13 - 0.12UEW
APPLICATION NOTE
<FM SECTION>
RF amplifier (see Fig.1)
This st age is co mposed o f th e e mitter-grounded
and cascade connection amplifier.
The input impedance of pin 16 is about 260Ω,
which is determined by D1.
Mixer amplifier (see Fig.2)
The a mplified RF signal is transformed into
IF signal by the mixer circuit which is
composed of a differential amplifier.
The a mplified IF signal is appeared through
the emitter follower circuit at pin 14. The
output impedance of the ceramic filter.
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TA7792.PDF ] | |
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