TEA6846H データシートの表示（PDF） - Philips Electronics
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TEA6846H Datasheet PDF : 44 Pages
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DAAIN
40
Vtune CPOUT
DGND
OSCFDB VDDA3
AFHOLD
AMAFIF2
VDDA4 fref VDDD
VCOGND OSCTNK
AFSAMPLE TRDSMUTE
RDSMPX FMMPX
42
43
44 45 46 47
48 49 50 51
53
54 55
56 57
58
VDDA2 VDDA1
59 61
39
DAATD
DAAOUT 38
ANTENNA
DAA
AM
37
T1FMAGC
36
T2FMAGC
35
IFMAGC
33
FMMIXIN2
31
RFGND
30
FMMIXIN1
FM
AGC
×
FM
I/Q MIXER
29
Vref(FMMIX)
90°
TUNING SYSTEM
10.25 MHz
VCO
WX
TEA6846H
N1
÷2
90°
AM-NOISE
DETECTOR
PEAK/
AVERAGE
BLANK
PULSE
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
MUTE
POWER
SUPPLY
I2C-bus
AM
IF AGC
AM
LEVEL
2 ms/20 ms
FM IF
IF
AM IF2 COUNT
I2C-BUS
LEVEL
DAA
DEMODULATOR
Σ
63
SDA
64
SCL
66
IF2GND
67
QDET1
68
QDET2
69 CAFC
70 Vlevel
IAMAGC
T2AMAGC
T1AMAGC
28
27 AM
26 RF AGC
N2
÷5/10
×
AM
MIXER2
FM
LIMITER/
LEVEL
23
AMMIX1IN1
×
AM
MIXER 1
IFAMP1
IFAMP2
22 20
19 18
17 16
14
AMMIX1IN2 MIX1OUT2 IFAMP1DEC IFAMP1IN
VDDA5 MIX1OUT1
VDDA6
12
11 9 8
7 6 54 3
2
1 79
IFAMP1OUT
Coffset
IF1GND
IFAMP2DEC IFAMP2IN AMIF2IN
FMLIMIN CAGC
AMIF2DEC FMLIMDEC
AMNBHOLD
IFAMP2OUT
Fig.1 Block diagram.
CRYSTAL
OSCILLATOR
71
XTAL1
72
XTALGND
73
XTAL2
76
Iref
77
AMMIX2OUT1
78
AMMIX2OUT2
MGU351
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