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ST Microelectronics - RF-FRONTEND FOR AM/FM-DSP-CARRADIOS WITH IF SAMPLING

Numéro de référence TDA7515
Description RF-FRONTEND FOR AM/FM-DSP-CARRADIOS WITH IF SAMPLING
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TDA7515 fiche technique
TDA7515
RF-FRONTEND FOR AM/FM-DSP-CARRADIOS
WITH IF SAMPLING
PRODUCT PREVIEW
s RF AGC generation by RF and IF detection
s I/Q Mixer for FM IF 10.7MHz with image
rejection and programmable IF tank adjust for
FM and AM
s Preamplifier and mixer for IF 10.7MHz AM
upconversion
s VCO and programmable divider for “world
receiver”
s Programmable controlled IF-gain stage
TQFP44
ORDERING NUMBER: TDA7515
Additional features:
s High performance fast PLL for RDS-system
s Electronic alignment for the preselection stages
s All functions bus-controlled
DESCRIPTION
The frontend is a high performance tuner circuit for
1 BLOCK DIAGRAM
AM/FM - DSP carradios with 10.7MHz - IF sampling.
It contains mixer and IF amplifiers for AM and FM,
VCO and PLL synthesizer on a single chip.
Use of BICMOS technology allows the implementa-
tion of several tuning functions and a minimum of ex-
ternal components.
optional
AGC
2
ADJ
2
2
IF 10.7MHz
FM
PM
AM
PM
2
IQ
AGC
2
TV1 TV2
AGC
DAGC
Bus
Interface
2
Supply
DIV :1/:2/:3
1/4 1/6
1/8 1/10 VCO
PLL
LPOUT LPAM LPFM LPHC
REFDIV
Fref
18/100kHz
00AT0037
July 2002
This is preliminary information on a new product now in development. Details are subject to change without notice.
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