TEA6843 データシートの表示（PDF） - Philips Electronics
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TEA6843 Datasheet PDF : 62 Pages
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DAAIN
40
Vtune CPOUT
DGND OSCFDB VDDA4
AFHOLD
AMAFIF2
VDDA3 FREF VDDD
VCOGND OSCTNK
AFSAMPLE
TRDSMUTE
RDSMPX FMMPX VDDA5 VDDA6
42
43
44 45 46 47 48 49 50 51
53
54
55
56
57
58
59
61
39
DAATD
DAAOUT 38
ANTENNA
DAA
AM
T1FMAGC 37
36
T2FMAGC
35
IFMAGC
34
WBSW
33
FMMIXIN2
31
RFGND
30
FMMIXIN1
FM
AGC
×
FM
I/Q MIXER
TUNING SYSTEM
10.25 MHz
VCO
WX
TEA6843HL
N1
÷2
90°
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
MUTE
POWER
SUPPLY
I2C-bus
FM IF
AM IF2
IF
COUNT
I2C-BUS
AM
IF AGC
LEVEL
DAA
SOFT
MUTE
63
SDA
64
SCL
66
IF2GND
Vref(FMMIX)
IAMAGC
T2AMAGC
T1AMAGC
AMMIX1IN1
AMMIX1IN2
WB
FLAG
29
28
27
AM
26 RF AGC
23
22
90°
AM-NOISE
DETECTOR
PEAK/
AVERAGE
BLANK
PULSE
AM
LEVEL
Σ
67
DEMODULATOR
68
69
×
AM
MIXER 1
N2
÷ 5/10
IFAMP 1
×
AM
MIXER 2
IFAMP 2
FM
LIMITER/
LEVEL
70
71
CRYSTAL
72
OSCILLATOR
73
75
76
77
78
20
19 18
17 16
14
MIX1OUT2 IFAMP1DEC IFAMP1IN
VDDA2
MIX1OUT1
VDDA1
12 11 10 9 8
7
65
IFAMP1OUT
IFAMP2DEC
Coffset
IF1GND
IFAMP2IN AMIF2IN
43
2
1 79
FMLIMIN CAGC
AMIF2DEC FMLIMDEC
13, 15, 21, 24, 25, 32,
41, 52, 60, 62, 65, 74, 80
MHC477
n.c.
IMUTEREF
AMNBHOLD
IFAMP2OUT
QDET1
QDET2
CAFC
Vlevel
XTAL1
XTALGND
XTAL2
TMUTE
IREF
AMMIX2OUT1
AMMIX2OUT2
Fig.1 Block diagram
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