TEA6820T Просмотр технического описания (PDF) - Philips Electronics
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TEA6820T Datasheet PDF : 48 Pages
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Philips Semiconductors
In Car Entertainment (ICE) car radio
Preliminary specification
TEA6820T; TEA6822T
handbook, halfpage
QDET1 1
QDET2 2
56 VDDA3
55 DGND
TSWITCH 3
54 SCL
AGND 4
53 SDA
VDDA1 5
HFBUS1 6
HFBUS2 7
52 VDDD
51 IACCONTR
50 LEVELUNWEIG
XTAL1 8
XTAL2 9
49 Vmute/AML
48 AMAFOUT
fref(p) 10
fref(n) 11
Iref 12
FMIF1IN1 13
47 MPXOUT
46 i.c.
45 MPXIN
44 OUTRIGHT
FMIF1IN2 14
TSDR 15
43
TEA6822T
42
RDS/AMSTOP
FMSTOP
TSDS 16
41 OUTLEFT
VSDS 17
VSDR 18
FMIF2OUT1 19
40 MPBUF
39 CAFC
38 LEVELADJ
FMIF2OUT2 20
37 FMIN1
Vref 21
AMIF2OUT1 22
36 DCFEED
35 FMIN2
AMIF2OUT2 23
34 AMIF2IN2
FMAMDEC 24
33 AMIF2IN1
PHASEDET 25
32 DEEMPHL
PILDET 26
FMAM10.7 27
31 DEEMPHR
30 AFGND
VDDA2 28
29 FMIFAMPOUT
MHA204
Fig.2 Pin configuration for TEA6822T.
handbook, halfpage
VDDA3 56
DGND 55
1 QDET1
2 QDET2
SCL 54
3 TSWITCH
SDA 53
4 AGND
VDDD 52
IACCONTR 51
LEVELUNWEIG 50
5 VDDA1
6 HFBUS1
7 HFBUS2
Vmute/AML 49
AMAFOUT 48
8 XTAL1
9 XTAL2
MPXOUT 47
i.c. 46
MPXIN 45
OUTRIGHT 44
10 fref(p)
11 fref(n)
12 Iref
13 FMIF1IN1
RDS/AMSTOP 43
14 FMIF1IN2
TEA6820T
FMSTOP 42
15 TSDR
OUTLEFT 41
16 TSDS
MPBUF 40
CAFC 39
LEVELADJ 38
17 VSDS
18 VSDR
19 FMIF2OUT1
FMIN1 37
20 FMIF2OUT2
DCFEED 36
FMIN2 35
21 Vref
22 AMIF2OUT1
AMIF2IN2 34
23 AMIF2OUT2
AMIF2IN1 33
24 FMAMDEC
DEEMPHL 32
25 PHASEDET
DEEMPHR 31
26 PILDET
AFGND 30
27 FMAM10.7
FMIFAMPOUT 29
28 VDDA2
MHA419
Fig.3 Pin configuration for TEA6820T (top view).
FUNCTIONAL DESCRIPTION
Stereo decoder
By changing the value of the input resistor at pin 12 the
MPX input can be adapted to the level of the FM
demodulator output (see Fig.16).
A 3rd order low-pass filter (fg = 90 kHz) at the MPX input
provides an extra 190 kHz ACI suppression.
An interference gate is connected at the MPX demodulator
outputs. For AM the VCO is switched off.
1997 Feb 12
6
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