TEA6849H Просмотр технического описания (PDF) - Philips Electronics
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TEA6849H
Philips Electronics
TEA6849H Datasheet PDF : 65 Pages
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DAAIN
DAATD
DAAOUT
TKEYEDAGC
TFMAGC
IFMAGC
WBFLAG
FMMIXIN2
i.c.
RFGND
FMMIXIN1
Vref(MIX)
IAMAGC
THFAMAGC
TAFAMAGC
VAMCAS
VAMCASFB
FMMUTE
MPXDCFDB
CPOUT
FREF
VCOGND OSCTNK
AFSAMPLE TRDSMUTE
Vtune
VDDA3
VDDD DGND
OSCFDB VDDA4
AFHOLD
AMAFIF2
40
41
42 43
44
45 46 47 48 49 50 51 52 53 54
55 56
39 ANTENNA I2C-bus
DAA
38
TUNING SYSTEM
VCO
RDS
UPDATE
AM STEREO
MUX
AM
37
I2C-bus
36 FM
TEA6849H
35 AGC
34
LEVEL I2C-bus WB/JAPAN/OIRT
33
× 32
31
FM
30 I/Q MIXER 1
÷1/ ÷2/
÷3
90°
AM
DEMOD
29
90°
28
27
26
25 AM
24 AGC
I2C-bus
LEVEL
AM NOISE
DETECTOR
PEAK/
AVERAGE
×
FM
MIXER 2
÷2
IF
FILTER
RDSMPX
FMMPX
57
58
AMPLIFIER
WB
x1/ x15
RDS
MUTE
VDDA5 MODDET
59
POWER
SUPPLY
I2C-BUS
60
61 VDDA6
62 IFBWFLAG
63 SDA
64 SCL
SOFT
MUTE
MPXOUT
IF
COUNT
FM AM
BUFFER
FM
DEMOD
20.5 MHz
BANDWIDTH
CONTROL
LEVEL
CRYSTAL
OSCILLATOR
65 VIFBW
66 IF2GND
67 CINT
68 MODETOUT
69 TACD
70 Vlevel(AMFM)
71 XTAL1
72 XTALGND
73 XTAL2
÷10/
÷20
I2C-bus
BLANK
PULSE
×
AM
MIXER 2
I2C-
bus STABI
LEVEL
DAA
SOFT MUTE
CONTROL
74 Vlevel(ACD)
75 ACDTHRES
AMMIX1IN
AMMIX1DEC
× 23
22 AM
MIXER 1
21
SWFLAG
20
19
18 17 16 15 14
13 12 11 10 9 8 7 6
5
4
3 21
I2C-bus
MIX1OUT2
IF2FILI IFAMPDEC
VDDA1
VDDA2
MIX1OUT1 IF2FILQ IFAMPIN IFAMPOUT
IFCDAATEST
AMNBHOLD AMIF2DEC FMLIMDCFDB1
AMIF2IN IREFFMIF2 FMLIMDCFDB2
IF1GND
FMMIX2DEC FMMIX2IN
COFFSET
I2C-bus
76
77
78
79
80
MDB205
IREF
AMMIX2OUT1
AMMIX2OUT2
CAGC
Vref(lim)
Fig.1 Block diagram.
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