7A-37A-3
BLOCKDIAGRAM
+FMIF-AMIF-AMAM-DET
10,7MHz
21
450kHz450kHz450kHz1121
VCC1VDD511151125114VCC2
TEA57621
7233534333840413632192022GND
63
VCC1VDDFM-IF2V Stab BFM-IF2I V Stab AAM-MIX OutAM-IF1 InAM-IF2AM-AFCAFC-AFC+VCC22
+BAGCRDSRDS
FM FRONTEND
WRITE Enable 293
AENABLE
STABILIZERAFC28
DATA4
DATA
CLOCK275
1102CLOCK
1 Ant1IF Out 710,7MHz37 FM-IF1I InFMFMAMAMP1 31STEREO6
FIF1IF2IFDETa
39
FM/AM
CONTROL
F 10,7 MHzif5 FM Osc.3
P030
Fo
Mono/
CHARGEStereo2441124
4 GNDOsc Out 8
PUMP
Left 141
LEFT
AMFM
f0 = fin + fif6FRONTENDDETMTVTMute 13
MT5STEREOGND2
8 I-TuneAM
DECODER
AMMIXER
OSC.Right 153
2 AM-RFXTALRIGHT
AGCOSCPILOT 16
Filter
CFieldstrength
RippleAM-Osc.FM GNDRF GNDIF GND Dig. GND RF GNDFM-DemodAGCAF-OutIndc.MPX-InVC0LPF
1634172642184410212511912
AM-RFAM-OSC
10,7MHz75kHz
510251233142+FM
MWMW
2106
7
510351224VCC
LWLWANTI BIRDY FILTERVCC1
VC0
BVDD
RDS
VCC2
MW/LW-SELECTION
PCS 69 715 |